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2019-12-04x86/efi: Update e820 with reserved EFI boot services data to fix kexec breakageDave Young1-4/+2
Michael Weiser reported that he got this error during a kexec rebooting: esrt: Unsupported ESRT version 2904149718861218184. The ESRT memory stays in EFI boot services data, and it was reserved in kernel via efi_mem_reserve(). The initial purpose of the reservation is to reuse the EFI boot services data across kexec reboot. For example the BGRT image data and some ESRT memory like Michael reported. But although the memory is reserved it is not updated in the X86 E820 table, and kexec_file_load() iterates system RAM in the IO resource list to find places for kernel, initramfs and other stuff. In Michael's case the kexec loaded initramfs overwrote the ESRT memory and then the failure happened. Since kexec_file_load() depends on the E820 table being updated, just fix this by updating the reserved EFI boot services memory as reserved type in E820. Originally any memory descriptors with EFI_MEMORY_RUNTIME attribute are bypassed in the reservation code path because they are assumed as reserved. But the reservation is still needed for multiple kexec reboots, and it is the only possible case we come here thus just drop the code chunk, then everything works without side effects. On my machine the ESRT memory sits in an EFI runtime data range, it does not trigger the problem, but I successfully tested with BGRT instead. both kexec_load() and kexec_file_load() work and kdump works as well. [ mingo: Edited the changelog. ] Reported-by: Michael Weiser <michael@weiser.dinsnail.net> Tested-by: Michael Weiser <michael@weiser.dinsnail.net> Signed-off-by: Dave Young <dyoung@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: kexec@lists.infradead.org Cc: linux-efi@vger.kernel.org Link: https://lkml.kernel.org/r/20191204075233.GA10520@dhcp-128-65.nay.redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-12-01Merge tag 'mfd-next-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfdLinus Torvalds2-14/+0
Pull MFD updates from Lee Jones: "Core Frameworks: - Add support for a "resource managed strongly uncachable ioremap" call - Provide a collection of MFD helper macros - Remove mfd_clone_cell() from MFD core - Add NULL de-reference protection in MFD core - Remove superfluous function fd_platform_add_cell() from MFD core - Honour Device Tree's request to disable a device New Drivers: - Add support for MediaTek MT6323 PMIC New Device Support: - Add support for Gemini Lake to Intel LPSS PCI - Add support for Cherry Trail Crystal Cover PMIC to Intel SoC PMIC CRC - Add support for PM{I}8950 to Qualcomm SPMI PMIC - Add support for U8420 to ST-Ericsson DB8500 - Add support for Comet Lake PCH-H to Intel LPSS PCI New Functionality: - Add support for requested supply clocks; madera-core Fix-ups: - Lower interrupt priority; rk808 - Use provided helpers (macros, group functions, defines); rk808, ipaq-micro, ab8500-core, db8500-prcmu, mt6397-core, cs5535-mfd - Only allocate IRQs on request; max77620 - Use simplified API; arizona-core - Remove redundant and/or duplicated code; wm8998-tables, arizona, syscon - Device Tree binding fix-ups; madera, max77650, max77693 - Remove mfd_cell->id abuse hack; cs5535-mfd - Remove only user of mfd_clone_cell(); cs5535-mfd - Make resources static; rohm-bd70528 Bug Fixes: - Fix product ID for RK818; rk808 - Fix Power Key; rk808 - Fix booting on the BananaPi; mt6397-core - Endian fix-ups; twl.h - Fix static error checker warnings; ti_am335x_tscadc" * tag 'mfd-next-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (47 commits) Revert "mfd: syscon: Set name of regmap_config" mfd: ti_am335x_tscadc: Fix static checker warning mfd: bd70528: Staticize bit value definitions mfd: mfd-core: Honour Device Tree's request to disable a child-device dt-bindings: mfd: max77693: Fix missing curly brace mfd: intel-lpss: Add Intel Comet Lake PCH-H PCI IDs mfd: db8500-prcmu: Support U8420-sysclk firmware dt-bindings: mfd: max77650: Convert the binding document to yaml mfd: mfd-core: Move pdev->mfd_cell creation back into mfd_add_device() mfd: mfd-core: Remove usage counting for .{en,dis}able() call-backs x86: olpc-xo1-sci: Remove invocation of MFD's .enable()/.disable() call-backs x86: olpc-xo1-pm: Remove invocation of MFD's .enable()/.disable() call-backs mfd: mfd-core: Remove mfd_clone_cell() mfd: mfd-core: Protect against NULL call-back function pointer mfd: cs5535-mfd: Register clients using their own dedicated MFD cell entries mfd: cs5535-mfd: Request shared IO regions centrally mfd: cs5535-mfd: Remove mfd_cell->id hack mfd: cs5535-mfd: Use PLATFORM_DEVID_* defines and tidy error message mfd: intel_soc_pmic_crc: Add "cht_crystal_cove_pmic" cell to CHT cells mfd: madera: Add support for requesting the supply clocks ...
2019-11-26Merge tag 'acpi-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds2-4/+53
Pull ACPI updates from Rafael Wysocki: "These update the ACPICA code in the kernel to upstream revision 20191018, add support for EFI specific purpose memory, update the ACPI EC driver to make it work on systems with hardware-reduced ACPI, improve ACPI-based device enumeration for some platforms, rework the lid blacklist handling in the button driver and add more lid quirks to it, unify ACPI _HID/_UID matching, fix assorted issues and clean up the code and documentation. Specifics: - Update the ACPICA code in the kernel to upstream revision 20191018 including: * Fixes for Clang warnings (Bob Moore) * Fix for possible overflow in get_tick_count() (Bob Moore) * Introduction of acpi_unload_table() (Bob Moore) * Debugger and utilities updates (Erik Schmauss) * Fix for unloading tables loaded via configfs (Nikolaus Voss) - Add support for EFI specific purpose memory to optionally allow either application-exclusive or core-kernel-mm managed access to differentiated memory (Dan Williams) - Fix and clean up processing of the HMAT table (Brice Goglin, Qian Cai, Tao Xu) - Update the ACPI EC driver to make it work on systems with hardware-reduced ACPI (Daniel Drake) - Always build in support for the Generic Event Device (GED) to allow one kernel binary to work both on systems with full hardware ACPI and hardware-reduced ACPI (Arjan van de Ven) - Fix the table unload mechanism to unregister platform devices created when the given table was loaded (Andy Shevchenko) - Rework the lid blacklist handling in the button driver and add more lid quirks to it (Hans de Goede) - Improve ACPI-based device enumeration for some platforms based on Intel BayTrail SoCs (Hans de Goede) - Add an OpRegion driver for the Cherry Trail Crystal Cove PMIC and prevent handlers from being registered for unhandled PMIC OpRegions (Hans de Goede) - Unify ACPI _HID/_UID matching (Andy Shevchenko) - Clean up documentation and comments (Cao jin, James Pack, Kacper Piwiński)" * tag 'acpi-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (52 commits) ACPI: OSI: Shoot duplicate word ACPI: HMAT: use %u instead of %d to print u32 values ACPI: NUMA: HMAT: fix a section mismatch ACPI: HMAT: don't mix pxm and nid when setting memory target processor_pxm ACPI: NUMA: HMAT: Register "soft reserved" memory as an "hmem" device ACPI: NUMA: HMAT: Register HMAT at device_initcall level device-dax: Add a driver for "hmem" devices dax: Fix alloc_dax_region() compile warning lib: Uplevel the pmem "region" ida to a global allocator x86/efi: Add efi_fake_mem support for EFI_MEMORY_SP arm/efi: EFI soft reservation to memblock x86/efi: EFI soft reservation to E820 enumeration efi: Common enable/disable infrastructure for EFI soft reservation x86/efi: Push EFI_MEMMAP check into leaf routines efi: Enumerate EFI_MEMORY_SP ACPI: NUMA: Establish a new drivers/acpi/numa/ directory ACPICA: Update version to 20191018 ACPICA: debugger: remove leading whitespaces when converting a string to a buffer ACPICA: acpiexec: initialize all simple types and field units from user input ACPICA: debugger: add field unit support for acpi_db_get_next_token ...
2019-11-26Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds5-22/+23
Pull x86 asm updates from Ingo Molnar: "The main changes in this cycle were: - Cross-arch changes to move the linker sections for NOTES and EXCEPTION_TABLE into the RO_DATA area, where they belong on most architectures. (Kees Cook) - Switch the x86 linker fill byte from x90 (NOP) to 0xcc (INT3), to trap jumps into the middle of those padding areas instead of sliding execution. (Kees Cook) - A thorough cleanup of symbol definitions within x86 assembler code. The rather randomly named macros got streamlined around a (hopefully) straightforward naming scheme: SYM_START(name, linkage, align...) SYM_END(name, sym_type) SYM_FUNC_START(name) SYM_FUNC_END(name) SYM_CODE_START(name) SYM_CODE_END(name) SYM_DATA_START(name) SYM_DATA_END(name) etc - with about three times of these basic primitives with some label, local symbol or attribute variant, expressed via postfixes. No change in functionality intended. (Jiri Slaby) - Misc other changes, cleanups and smaller fixes" * 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (67 commits) x86/entry/64: Remove pointless jump in paranoid_exit x86/entry/32: Remove unused resume_userspace label x86/build/vdso: Remove meaningless CFLAGS_REMOVE_*.o m68k: Convert missed RODATA to RO_DATA x86/vmlinux: Use INT3 instead of NOP for linker fill bytes x86/mm: Report actual image regions in /proc/iomem x86/mm: Report which part of kernel image is freed x86/mm: Remove redundant address-of operators on addresses xtensa: Move EXCEPTION_TABLE to RO_DATA segment powerpc: Move EXCEPTION_TABLE to RO_DATA segment parisc: Move EXCEPTION_TABLE to RO_DATA segment microblaze: Move EXCEPTION_TABLE to RO_DATA segment ia64: Move EXCEPTION_TABLE to RO_DATA segment h8300: Move EXCEPTION_TABLE to RO_DATA segment c6x: Move EXCEPTION_TABLE to RO_DATA segment arm64: Move EXCEPTION_TABLE to RO_DATA segment alpha: Move EXCEPTION_TABLE to RO_DATA segment x86/vmlinux: Move EXCEPTION_TABLE to RO_DATA segment x86/vmlinux: Actually use _etext for the end of the text segment vmlinux.lds.h: Allow EXCEPTION_TABLE to live in RO_DATA ...
2019-11-26Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds1-4/+5
Pull x86 platform updates from Ingo Molnar: "UV platform updates (with a 'hubless' variant) and Jailhouse updates for better UART support" * 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/jailhouse: Only enable platform UARTs if available x86/jailhouse: Improve setup data version comparison x86/platform/uv: Account for UV Hubless in is_uvX_hub Ops x86/platform/uv: Check EFI Boot to set reboot type x86/platform/uv: Decode UVsystab Info x86/platform/uv: Add UV Hubbed/Hubless Proc FS Files x86/platform/uv: Setup UV functions for Hubless UV Systems x86/platform/uv: Add return code to UV BIOS Init function x86/platform/uv: Return UV Hubless System Type x86/platform/uv: Save OEM_ID from ACPI MADT probe
2019-11-25Merge tag 'printk-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printkLinus Torvalds2-3/+2
Pull printk updates from Petr Mladek: - Allow to print symbolic error names via new %pe modifier. - Use pr_warn() instead of the remaining pr_warning() calls. Fix formatting of the related lines. - Add VSPRINTF entry to MAINTAINERS. * tag 'printk-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk: (32 commits) checkpatch: don't warn about new vsprintf pointer extension '%pe' MAINTAINERS: Add VSPRINTF tools lib api: Renaming pr_warning to pr_warn ASoC: samsung: Use pr_warn instead of pr_warning lib: cpu_rmap: Use pr_warn instead of pr_warning trace: Use pr_warn instead of pr_warning dma-debug: Use pr_warn instead of pr_warning vgacon: Use pr_warn instead of pr_warning fs: afs: Use pr_warn instead of pr_warning sh/intc: Use pr_warn instead of pr_warning scsi: Use pr_warn instead of pr_warning platform/x86: intel_oaktrail: Use pr_warn instead of pr_warning platform/x86: asus-laptop: Use pr_warn instead of pr_warning platform/x86: eeepc-laptop: Use pr_warn instead of pr_warning oprofile: Use pr_warn instead of pr_warning of: Use pr_warn instead of pr_warning macintosh: Use pr_warn instead of pr_warning idsn: Use pr_warn instead of pr_warning ide: Use pr_warn instead of pr_warning crypto: n2: Use pr_warn instead of pr_warning ...
2019-11-11x86: olpc-xo1-sci: Remove invocation of MFD's .enable()/.disable() call-backsLee Jones1-6/+0
IO regions are now requested and released by this device's parent. Signed-off-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
2019-11-11x86: olpc-xo1-pm: Remove invocation of MFD's .enable()/.disable() call-backsLee Jones1-8/+0
IO regions are now requested and released by this device's parent. Signed-off-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
2019-11-07x86/efi: Add efi_fake_mem support for EFI_MEMORY_SPDan Williams1-0/+2
Given that EFI_MEMORY_SP is platform BIOS policy decision for marking memory ranges as "reserved for a specific purpose" there will inevitably be scenarios where the BIOS omits the attribute in situations where it is desired. Unlike other attributes if the OS wants to reserve this memory from the kernel the reservation needs to happen early in init. So early, in fact, that it needs to happen before e820__memblock_setup() which is a pre-requisite for efi_fake_memmap() that wants to allocate memory for the updated table. Introduce an x86 specific efi_fake_memmap_early() that can search for attempts to set EFI_MEMORY_SP via efi_fake_mem and update the e820 table accordingly. The KASLR code that scans the command line looking for user-directed memory reservations also needs to be updated to consider "efi_fake_mem=nn@ss:0x40000" requests. Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-11-07x86/efi: EFI soft reservation to E820 enumerationDan Williams1-4/+45
UEFI 2.8 defines an EFI_MEMORY_SP attribute bit to augment the interpretation of the EFI Memory Types as "reserved for a specific purpose". The proposed Linux behavior for specific purpose memory is that it is reserved for direct-access (device-dax) by default and not available for any kernel usage, not even as an OOM fallback. Later, through udev scripts or another init mechanism, these device-dax claimed ranges can be reconfigured and hot-added to the available System-RAM with a unique node identifier. This device-dax management scheme implements "soft" in the "soft reserved" designation by allowing some or all of the reservation to be recovered as typical memory. This policy can be disabled at compile-time with CONFIG_EFI_SOFT_RESERVE=n, or runtime with efi=nosoftreserve. This patch introduces 2 new concepts at once given the entanglement between early boot enumeration relative to memory that can optionally be reserved from the kernel page allocator by default. The new concepts are: - E820_TYPE_SOFT_RESERVED: Upon detecting the EFI_MEMORY_SP attribute on EFI_CONVENTIONAL memory, update the E820 map with this new type. Only perform this classification if the CONFIG_EFI_SOFT_RESERVE=y policy is enabled, otherwise treat it as typical ram. - IORES_DESC_SOFT_RESERVED: Add a new I/O resource descriptor for a device driver to search iomem resources for application specific memory. Teach the iomem code to identify such ranges as "Soft Reserved". Note that the comment for do_add_efi_memmap() needed refreshing since it seemed to imply that the efi map might overflow the e820 table, but that is not an issue as of commit 7b6e4ba3cb1f "x86/boot/e820: Clean up the E820_X_MAX definition" that removed the 128 entry limit for e820__range_add(). A follow-on change integrates parsing of the ACPI HMAT to identify the node and sub-range boundaries of EFI_MEMORY_SP designated memory. For now, just identify and reserve memory of this type. Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reported-by: kbuild test robot <lkp@intel.com> Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-11-07x86/efi: Push EFI_MEMMAP check into leaf routinesDan Williams2-0/+6
In preparation for adding another EFI_MEMMAP dependent call that needs to occur before e820__memblock_setup() fixup the existing efi calls to check for EFI_MEMMAP internally. This ends up being cleaner than the alternative of checking EFI_MEMMAP multiple times in setup_arch(). Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-10-18x86: Use pr_warn instead of pr_warningKefeng Wang2-3/+2
As said in commit f2c2cbcc35d4 ("powerpc: Use pr_warn instead of pr_warning"), removing pr_warning so all logging messages use a consistent <prefix>_warn style. Let's do it. Link: http://lkml.kernel.org/r/20191018031850.48498-7-wangkefeng.wang@huawei.com To: linux-kernel@vger.kernel.org Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Robert Richter <rric@kernel.org> Cc: Darren Hart <dvhart@infradead.org> Cc: Andy Shevchenko <andy@infradead.org> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Signed-off-by: Petr Mladek <pmladek@suse.com>
2019-10-18x86/asm/32: Change all ENTRY+ENDPROC to SYM_FUNC_*Jiri Slaby1-2/+2
These are all functions which are invoked from elsewhere, so annotate them as global using the new SYM_FUNC_START and their ENDPROC's by SYM_FUNC_END. Now, ENTRY/ENDPROC can be forced to be undefined on X86, so do so. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Allison Randal <allison@lohutok.net> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Andy Shevchenko <andy@infradead.org> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Bill Metzenthen <billm@melbpc.org.au> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Darren Hart <dvhart@infradead.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: linux-arch@vger.kernel.org Cc: linux-crypto@vger.kernel.org Cc: linux-efi <linux-efi@vger.kernel.org> Cc: linux-efi@vger.kernel.org Cc: linux-pm@vger.kernel.org Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Pavel Machek <pavel@ucw.cz> Cc: platform-driver-x86@vger.kernel.org Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Cc: x86-ml <x86@kernel.org> Link: https://lkml.kernel.org/r/20191011115108.12392-28-jslaby@suse.cz
2019-10-18x86/asm: Change all ENTRY+ENDPROC to SYM_FUNC_*Jiri Slaby2-4/+4
These are all functions which are invoked from elsewhere, so annotate them as global using the new SYM_FUNC_START and their ENDPROC's by SYM_FUNC_END. Make sure ENTRY/ENDPROC is not defined on X86_64, given these were the last users. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> [hibernate] Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> [xen bits] Acked-by: Herbert Xu <herbert@gondor.apana.org.au> [crypto] Cc: Allison Randal <allison@lohutok.net> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Andy Shevchenko <andy@infradead.org> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Armijn Hemel <armijn@tjaldur.nl> Cc: Cao jin <caoj.fnst@cn.fujitsu.com> Cc: Darren Hart <dvhart@infradead.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Enrico Weigelt <info@metux.net> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jim Mattson <jmattson@google.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: kvm ML <kvm@vger.kernel.org> Cc: Len Brown <len.brown@intel.com> Cc: linux-arch@vger.kernel.org Cc: linux-crypto@vger.kernel.org Cc: linux-efi <linux-efi@vger.kernel.org> Cc: linux-efi@vger.kernel.org Cc: linux-pm@vger.kernel.org Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Peter Zijlstra <peterz@infradead.org> Cc: platform-driver-x86@vger.kernel.org Cc: "Radim Krčmář" <rkrcmar@redhat.com> Cc: Sean Christopherson <sean.j.christopherson@intel.com> Cc: Stefano Stabellini <sstabellini@kernel.org> Cc: "Steven Rostedt (VMware)" <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vitaly Kuznetsov <vkuznets@redhat.com> Cc: Wanpeng Li <wanpengli@tencent.com> Cc: Wei Huang <wei@redhat.com> Cc: x86-ml <x86@kernel.org> Cc: xen-devel@lists.xenproject.org Cc: Xiaoyao Li <xiaoyao.li@linux.intel.com> Link: https://lkml.kernel.org/r/20191011115108.12392-25-jslaby@suse.cz
2019-10-18x86/asm/64: Add ENDs to some functions and relabel with SYM_CODE_*Jiri Slaby1-1/+2
All these are functions which are invoked from elsewhere but they are not typical C functions. So annotate them using the new SYM_CODE_START. All these were not balanced with any END, so mark their ends by SYM_CODE_END appropriately too. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> [xen bits] Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> [power mgmt] Cc: Andy Shevchenko <andy@infradead.org> Cc: Cao jin <caoj.fnst@cn.fujitsu.com> Cc: Darren Hart <dvhart@infradead.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: linux-arch@vger.kernel.org Cc: linux-pm@vger.kernel.org Cc: Pavel Machek <pavel@ucw.cz> Cc: Pingfan Liu <kernelfans@gmail.com> Cc: platform-driver-x86@vger.kernel.org Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Stefano Stabellini <sstabellini@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Wei Huang <wei@redhat.com> Cc: x86-ml <x86@kernel.org> Cc: xen-devel@lists.xenproject.org Cc: Xiaoyao Li <xiaoyao.li@linux.intel.com> Link: https://lkml.kernel.org/r/20191011115108.12392-23-jslaby@suse.cz
2019-10-18x86/asm: Make some functions localJiri Slaby2-8/+8
There are a couple of assembly functions which are invoked only locally in the file they are defined. In C, they are marked "static". In assembly, annotate them using SYM_{FUNC,CODE}_START_LOCAL (and switch their ENDPROC to SYM_{FUNC,CODE}_END too). Whether FUNC or CODE is used, depends on whether ENDPROC or END was used for a particular function before. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Andy Lutomirski <luto@kernel.org> Cc: Andy Shevchenko <andy@infradead.org> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Darren Hart <dvhart@infradead.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: linux-arch@vger.kernel.org Cc: linux-efi <linux-efi@vger.kernel.org> Cc: linux-efi@vger.kernel.org Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Peter Zijlstra <peterz@infradead.org> Cc: platform-driver-x86@vger.kernel.org Cc: Stefano Stabellini <sstabellini@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: x86-ml <x86@kernel.org> Cc: xen-devel@lists.xenproject.org Link: https://lkml.kernel.org/r/20191011115108.12392-21-jslaby@suse.cz
2019-10-18xen/pvh: Annotate data appropriatelyJiri Slaby1-7/+7
Use the new SYM_DATA_START_LOCAL, and SYM_DATA_END* macros to get: 0000 8 OBJECT LOCAL DEFAULT 6 gdt 0008 32 OBJECT LOCAL DEFAULT 6 gdt_start 0028 0 OBJECT LOCAL DEFAULT 6 gdt_end 0028 256 OBJECT LOCAL DEFAULT 6 early_stack 0128 0 OBJECT LOCAL DEFAULT 6 early_stack Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Andy Shevchenko <andy@infradead.org> Cc: Darren Hart <dvhart@infradead.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: linux-arch@vger.kernel.org Cc: platform-driver-x86@vger.kernel.org Cc: Stefano Stabellini <sstabellini@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: x86-ml <x86@kernel.org> Cc: xen-devel@lists.xenproject.org Link: https://lkml.kernel.org/r/20191011115108.12392-15-jslaby@suse.cz
2019-10-07efi/x86: Do not clean dummy variable in kexec pathDave Young1-3/+0
kexec reboot fails randomly in UEFI based KVM guest. The firmware just resets while calling efi_delete_dummy_variable(); Unfortunately I don't know how to debug the firmware, it is also possible a potential problem on real hardware as well although nobody reproduced it. The intention of the efi_delete_dummy_variable is to trigger garbage collection when entering virtual mode. But SetVirtualAddressMap can only run once for each physical reboot, thus kexec_enter_virtual_mode() is not necessarily a good place to clean a dummy object. Drop the efi_delete_dummy_variable so that kexec reboot can work. Signed-off-by: Dave Young <dyoung@redhat.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Matthew Garrett <mjg59@google.com> Cc: Ben Dooks <ben.dooks@codethink.co.uk> Cc: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Cc: Jerry Snitselaar <jsnitsel@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Lukas Wunner <lukas@wunner.de> Cc: Lyude Paul <lyude@redhat.com> Cc: Octavian Purdila <octavian.purdila@intel.com> Cc: Peter Jones <pjones@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Scott Talbert <swt@techie.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Cc: linux-integrity@vger.kernel.org Link: https://lkml.kernel.org/r/20191002165904.8819-8-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-10-07x86/platform/uv: Add return code to UV BIOS Init functionMike Travis1-4/+5
Add a return code to the UV BIOS init function that indicates the successful initialization of the kernel/BIOS callback interface. Signed-off-by: Mike Travis <mike.travis@hpe.com> Reviewed-by: Steve Wahl <steve.wahl@hpe.com> Reviewed-by: Dimitri Sivanich <dimitri.sivanich@hpe.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Christoph Hellwig <hch@infradead.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Hedi Berriche <hedi.berriche@hpe.com> Cc: Justin Ernst <justin.ernst@hpe.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russ Anderson <russ.anderson@hpe.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20190910145839.895739629@stormcage.eag.rdlabs.hpecorp.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-09-18Merge tag 'driver-core-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-coreLinus Torvalds1-10/+7
Pull driver core updates from Greg Kroah-Hartman: "Here is the big driver core update for 5.4-rc1. There was a bit of a churn in here, with a number of core and OF platform patches being added to the tree, and then after much discussion and review and a day-long in-person meeting, they were decided to be reverted and a new set of patches is currently being reviewed on the mailing list. Other than that churn, there are two "persistent" branches in here that other trees will be pulling in as well during the merge window. One branch to add support for drivers to have the driver core automatically add sysfs attribute files when a driver is bound to a device so that the driver doesn't have to manually do it (and then clean it up, as it always gets it wrong). There's another branch in here for generic lookup helpers for the driver core that lots of busses are starting to use. That's the majority of the non-driver-core changes in this patch series. There's also some on-going debugfs file creation cleanup that has been slowly happening over the past few releases, with the goal to hopefully get that done sometime next year. All of these have been in linux-next for a while now with no reported issues" [ Note that the above-mentioned generic lookup helpers branch was already brought in by the LED merge (commit 4feaab05dc1e) that had shared it. Also note that that common branch introduced an i2c bug due to a bad conversion, which got fixed here. - Linus ] * tag 'driver-core-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (49 commits) coccinelle: platform_get_irq: Fix parse error driver-core: add include guard to linux/container.h sysfs: add BIN_ATTR_WO() macro driver core: platform: Export platform_get_irq_optional() hwmon: pwm-fan: Use platform_get_irq_optional() driver core: platform: Introduce platform_get_irq_optional() Revert "driver core: Add support for linking devices during device addition" Revert "driver core: Add edit_links() callback for drivers" Revert "of/platform: Add functional dependency link from DT bindings" Revert "driver core: Add sync_state driver/bus callback" Revert "of/platform: Pause/resume sync state during init and of_platform_populate()" Revert "of/platform: Create device links for all child-supplier depencencies" Revert "of/platform: Don't create device links for default busses" Revert "of/platform: Fix fn definitons for of_link_is_valid() and of_link_property()" Revert "of/platform: Fix device_links_supplier_sync_state_resume() warning" Revert "of/platform: Disable generic device linking code for PowerPC" devcoredump: fix typo in comment devcoredump: use memory_read_from_buffer of/platform: Disable generic device linking code for PowerPC device.h: Fix warnings for mismatched parameter names in comments ...
2019-09-16Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds2-40/+64
Pull x86 platform update from Ingo Molnar: "The biggest change is the rework of the intel/iosf_mbi locking code which used a few non-standard locking patterns, to make it work under lockdep" * 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/platform/uv: Fix kmalloc() NULL check routine x86/platform/intel/iosf_mbi Rewrite locking
2019-09-06x86/platform/uv: Fix kmalloc() NULL check routineAustin Kim1-2/+2
The result of kmalloc() should have been checked ahead of below statement: pqp = (struct bau_pq_entry *)vp; Move BUG_ON(!vp) before above statement. Signed-off-by: Austin Kim <austindh.kim@gmail.com> Cc: Dimitri Sivanich <dimitri.sivanich@hpe.com> Cc: Hedi Berriche <hedi.berriche@hpe.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Travis <mike.travis@hpe.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russ Anderson <russ.anderson@hpe.com> Cc: Steve Wahl <steve.wahl@hpe.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: allison@lohutok.net Cc: andy@infradead.org Cc: armijn@tjaldur.nl Cc: bp@alien8.de Cc: dvhart@infradead.org Cc: gregkh@linuxfoundation.org Cc: hpa@zytor.com Cc: kjlu@umn.edu Cc: platform-driver-x86@vger.kernel.org Link: https://lkml.kernel.org/r/20190905232951.GA28779@LGEARND20B15 Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-08-19x86/platform/intel/iosf_mbi Rewrite lockingHans de Goede1-38/+62
There are 2 problems with the old iosf PMIC I2C bus arbritration code which need to be addressed: 1. The lockdep code complains about a possible deadlock in the iosf_mbi_[un]block_punit_i2c_access code: [ 6.712662] ====================================================== [ 6.712673] WARNING: possible circular locking dependency detected [ 6.712685] 5.3.0-rc2+ #79 Not tainted [ 6.712692] ------------------------------------------------------ [ 6.712702] kworker/0:1/7 is trying to acquire lock: [ 6.712712] 00000000df1c5681 (iosf_mbi_block_punit_i2c_access_count_mutex){+.+.}, at: iosf_mbi_unblock_punit_i2c_access+0x13/0x90 [ 6.712739] but task is already holding lock: [ 6.712749] 0000000067cb23e7 (iosf_mbi_punit_mutex){+.+.}, at: iosf_mbi_block_punit_i2c_access+0x97/0x186 [ 6.712768] which lock already depends on the new lock. [ 6.712780] the existing dependency chain (in reverse order) is: [ 6.712792] -> #1 (iosf_mbi_punit_mutex){+.+.}: [ 6.712808] __mutex_lock+0xa8/0x9a0 [ 6.712818] iosf_mbi_block_punit_i2c_access+0x97/0x186 [ 6.712831] i2c_dw_acquire_lock+0x20/0x30 [ 6.712841] i2c_dw_set_reg_access+0x15/0xb0 [ 6.712851] i2c_dw_probe+0x57/0x473 [ 6.712861] dw_i2c_plat_probe+0x33e/0x640 [ 6.712874] platform_drv_probe+0x38/0x80 [ 6.712884] really_probe+0xf3/0x380 [ 6.712894] driver_probe_device+0x59/0xd0 [ 6.712905] bus_for_each_drv+0x84/0xd0 [ 6.712915] __device_attach+0xe4/0x170 [ 6.712925] bus_probe_device+0x9f/0xb0 [ 6.712935] deferred_probe_work_func+0x79/0xd0 [ 6.712946] process_one_work+0x234/0x560 [ 6.712957] worker_thread+0x50/0x3b0 [ 6.712967] kthread+0x10a/0x140 [ 6.712977] ret_from_fork+0x3a/0x50 [ 6.712986] -> #0 (iosf_mbi_block_punit_i2c_access_count_mutex){+.+.}: [ 6.713004] __lock_acquire+0xe07/0x1930 [ 6.713015] lock_acquire+0x9d/0x1a0 [ 6.713025] __mutex_lock+0xa8/0x9a0 [ 6.713035] iosf_mbi_unblock_punit_i2c_access+0x13/0x90 [ 6.713047] i2c_dw_set_reg_access+0x4d/0xb0 [ 6.713058] i2c_dw_probe+0x57/0x473 [ 6.713068] dw_i2c_plat_probe+0x33e/0x640 [ 6.713079] platform_drv_probe+0x38/0x80 [ 6.713089] really_probe+0xf3/0x380 [ 6.713099] driver_probe_device+0x59/0xd0 [ 6.713109] bus_for_each_drv+0x84/0xd0 [ 6.713119] __device_attach+0xe4/0x170 [ 6.713129] bus_probe_device+0x9f/0xb0 [ 6.713140] deferred_probe_work_func+0x79/0xd0 [ 6.713150] process_one_work+0x234/0x560 [ 6.713160] worker_thread+0x50/0x3b0 [ 6.713170] kthread+0x10a/0x140 [ 6.713180] ret_from_fork+0x3a/0x50 [ 6.713189] other info that might help us debug this: [ 6.713202] Possible unsafe locking scenario: [ 6.713212] CPU0 CPU1 [ 6.713221] ---- ---- [ 6.713229] lock(iosf_mbi_punit_mutex); [ 6.713239] lock(iosf_mbi_block_punit_i2c_access_count_mutex); [ 6.713253] lock(iosf_mbi_punit_mutex); [ 6.713265] lock(iosf_mbi_block_punit_i2c_access_count_mutex); [ 6.713276] *** DEADLOCK *** In practice can never happen because only the first caller which increments iosf_mbi_block_punit_i2c_access_count will also take iosf_mbi_punit_mutex, that is the whole purpose of the counter, which itself is protected by iosf_mbi_block_punit_i2c_access_count_mutex. But there is no way to tell the lockdep code about this and we really want to be able to run a kernel with lockdep enabled without these warnings being triggered. 2. The lockdep warning also points out another real problem, if 2 threads both are in a block of code protected by iosf_mbi_block_punit_i2c_access and the first thread to acquire the block exits before the second thread then the second thread will call mutex_unlock on iosf_mbi_punit_mutex, but it is not the thread which took the mutex and unlocking by another thread is not allowed. Fix this by getting rid of the notion of holding a mutex for the entire duration of the PMIC accesses, be it either from the PUnit side, or from an in kernel I2C driver. In general holding a mutex after exiting a function is a bad idea and the above problems show this case is no different. Instead 2 counters are now used, one for PMIC accesses from the PUnit and one for accesses from in kernel I2C code. When access is requested now the code will wait (using a waitqueue) for the counter of the other type of access to reach 0 and on release, if the counter reaches 0 the wakequeue is woken. Note that the counter approach is necessary to allow nested calls. The main reason for this is so that a series of i2c transfers can be done with the punit blocked from accessing the bus the whole time. This is necessary to be able to safely read/modify/write a PMIC register without racing with the PUNIT doing the same thing. Allowing nested iosf_mbi_block_punit_i2c_access() calls also is desirable from a performance pov since the whole dance necessary to block the PUnit from accessing the PMIC I2C bus is somewhat expensive. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lkml.kernel.org/r/20190812102113.95794-1-hdegoede@redhat.com
2019-08-08efi: Export Runtime Configuration Interface table to sysfsNarendra K1-0/+3
System firmware advertises the address of the 'Runtime Configuration Interface table version 2 (RCI2)' via an EFI Configuration Table entry. This code retrieves the RCI2 table from the address and exports it to sysfs as a binary attribute 'rci2' under /sys/firmware/efi/tables directory. The approach adopted is similar to the attribute 'DMI' under /sys/firmware/dmi/tables. RCI2 table contains BIOS HII in XML format and is used to populate BIOS setup page in Dell EMC OpenManage Server Administrator tool. The BIOS setup page contains BIOS tokens which can be configured. Signed-off-by: Narendra K <Narendra.K@dell.com> Reviewed-by: Mario Limonciello <mario.limonciello@dell.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
2019-08-08efi: ia64: move SAL systab handling out of generic EFI codeArd Biesheuvel1-1/+0
The SAL systab is an Itanium specific EFI configuration table, so move its handling into arch/ia64 where it belongs. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
2019-08-08efi/x86: move UV_SYSTAB handling into arch/x86Ard Biesheuvel2-6/+10
The SGI UV UEFI machines are tightly coupled to the x86 architecture so there is no need to keep any awareness of its existence in the generic EFI layer, especially since we already have the infrastructure to handle arch-specific configuration tables, and were even already using it to some extent. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
2019-08-08efi: x86: move efi_is_table_address() into arch/x86Ard Biesheuvel1-0/+33
The function efi_is_table_address() and the associated array of table pointers is specific to x86. Since we will be adding some more x86 specific tables, let's move this code out of the generic code first. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
2019-08-02olpc: x01: convert platform driver to use dev_groupsGreg Kroah-Hartman1-10/+7
Platform drivers now have the option to have the platform core create and remove any needed sysfs attribute files. So take advantage of that and do not register "by hand" a lid sysfs file. Cc: Darren Hart <dvhart@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: x86@kernel.org Cc: platform-driver-x86@vger.kernel.org Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20190731124349.4474-7-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-14Merge tag 'platform-drivers-x86-v5.3-1' of git://git.infradead.org/linux-platform-drivers-x86Linus Torvalds2-102/+19
Pull x86 platform driver updates from Andy Shevchenko: "Gathered a bunch of x86 platform driver changes. It's rather big, since includes two big refactors and completely new driver: - ASUS WMI driver got a big refactoring in order to support the TUF Gaming laptops. Besides that, the regression with backlight being permanently off on various EeePC laptops has been fixed. - Accelerometer on HP ProBook 450 G0 shows wrong measurements due to X axis being inverted. This has been fixed. - Intel PMC core driver has been extended to be ACPI enumerated if the DSDT provides device with _HID "INT33A1". This allows to convert the driver to be pure platform and support new hardware purely based on ACPI DSDT. - From now on the Intel Speed Select Technology is supported thru a corresponding driver. This driver provides an access to the features of the ISST, such as Performance Profile, Core Power, Base frequency and Turbo Frequency. - Mellanox platform drivers has been refactored and now extended to support more systems, including new coming ones. - The OLPC XO-1.75 platform is now supported. - CB4063 Beckhoff Automation board is using PMC clocks, provided via pmc_atom driver, for ethernet controllers in a way that they can't be managed by the clock driver. The quirk has been extended to cover this case. - Touchscreen on Chuwi Hi10 Plus tablet has been enabled. Meanwhile the information of Chuwi Hi10 Air has been fixed to cover more models based on the same platform. - Xiaomi notebooks have WMI interface enabled. Thus, the driver to support it has been provided. It required some extension of the generic WMI library, which allows to propagate opaque context to the ->probe() of the individual drivers. This release includes debugfs clean up from Greg KH for several drivers that drop return code check and make debugfs absence or failure non-fatal. Also miscellaneous fixes here and there, mostly for Acer WMI and various Intel drivers" * tag 'platform-drivers-x86-v5.3-1' of git://git.infradead.org/linux-platform-drivers-x86: (74 commits) platform/x86: Fix PCENGINES_APU2 Kconfig warning tools/power/x86/intel-speed-select: Add .gitignore file platform/x86: mlx-platform: Fix error handling in mlxplat_init() platform/x86: intel_pmc_core: Attach using APCI HID "INT33A1" platform/x86: intel_pmc_core: transform Pkg C-state residency from TSC ticks into microseconds platform/x86: asus-wmi: Use dev_get_drvdata() Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces platform/x86: mlx-platform: Add more reset cause attributes platform/x86: mlx-platform: Modify DMI matching order platform/x86: mlx-platform: Add regmap structure for the next generation systems platform/x86: mlx-platform: Change API for i2c-mlxcpld driver activation platform/x86: mlx-platform: Move regmap initialization before all drivers activation MAINTAINERS: Update for Intel Speed Select Technology tools/power/x86: A tool to validate Intel Speed Select commands platform/x86: ISST: Restore state on resume platform/x86: ISST: Add Intel Speed Select PUNIT MSR interface platform/x86: ISST: Add Intel Speed Select mailbox interface via MSRs platform/x86: ISST: Add Intel Speed Select mailbox interface via PCI platform/x86: ISST: Add Intel Speed Select mmio interface platform/x86: ISST: Add IOCTL to Translate Linux logical CPU to PUNIT CPU number ...
2019-07-12Merge tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-coreLinus Torvalds4-60/+13
Pull driver core and debugfs updates from Greg KH: "Here is the "big" driver core and debugfs changes for 5.3-rc1 It's a lot of different patches, all across the tree due to some api changes and lots of debugfs cleanups. Other than the debugfs cleanups, in this set of changes we have: - bus iteration function cleanups - scripts/get_abi.pl tool to display and parse Documentation/ABI entries in a simple way - cleanups to Documenatation/ABI/ entries to make them parse easier due to typos and other minor things - default_attrs use for some ktype users - driver model documentation file conversions to .rst - compressed firmware file loading - deferred probe fixes All of these have been in linux-next for a while, with a bunch of merge issues that Stephen has been patient with me for" * tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (102 commits) debugfs: make error message a bit more verbose orangefs: fix build warning from debugfs cleanup patch ubifs: fix build warning after debugfs cleanup patch driver: core: Allow subsystems to continue deferring probe drivers: base: cacheinfo: Ensure cpu hotplug work is done before Intel RDT arch_topology: Remove error messages on out-of-memory conditions lib: notifier-error-inject: no need to check return value of debugfs_create functions swiotlb: no need to check return value of debugfs_create functions ceph: no need to check return value of debugfs_create functions sunrpc: no need to check return value of debugfs_create functions ubifs: no need to check return value of debugfs_create functions orangefs: no need to check return value of debugfs_create functions nfsd: no need to check return value of debugfs_create functions lib: 842: no need to check return value of debugfs_create functions debugfs: provide pr_fmt() macro debugfs: log errors when something goes wrong drivers: s390/cio: Fix compilation warning about const qualifiers drivers: Add generic helper to match by of_node driver_find_device: Unify the match function with class_find_device() bus_find_device: Unify the match callback with class_find_device ...
2019-07-09Merge tag 'docs-5.3' of git://git.lwn.net/linuxLinus Torvalds1-1/+1
Pull Documentation updates from Jonathan Corbet: "It's been a relatively busy cycle for docs: - A fair pile of RST conversions, many from Mauro. These create more than the usual number of simple but annoying merge conflicts with other trees, unfortunately. He has a lot more of these waiting on the wings that, I think, will go to you directly later on. - A new document on how to use merges and rebases in kernel repos, and one on Spectre vulnerabilities. - Various improvements to the build system, including automatic markup of function() references because some people, for reasons I will never understand, were of the opinion that :c:func:``function()`` is unattractive and not fun to type. - We now recommend using sphinx 1.7, but still support back to 1.4. - Lots of smaller improvements, warning fixes, typo fixes, etc" * tag 'docs-5.3' of git://git.lwn.net/linux: (129 commits) docs: automarkup.py: ignore exceptions when seeking for xrefs docs: Move binderfs to admin-guide Disable Sphinx SmartyPants in HTML output doc: RCU callback locks need only _bh, not necessarily _irq docs: format kernel-parameters -- as code Doc : doc-guide : Fix a typo platform: x86: get rid of a non-existent document Add the RCU docs to the core-api manual Documentation: RCU: Add TOC tree hooks Documentation: RCU: Rename txt files to rst Documentation: RCU: Convert RCU UP systems to reST Documentation: RCU: Convert RCU linked list to reST Documentation: RCU: Convert RCU basic concepts to reST docs: filesystems: Remove uneeded .rst extension on toctables scripts/sphinx-pre-install: fix out-of-tree build docs: zh_CN: submitting-drivers.rst: Remove a duplicated Documentation/ Documentation: PGP: update for newer HW devices Documentation: Add section about CPU vulnerabilities for Spectre Documentation: platform: Delete x86-laptop-drivers.txt docs: Note that :c:func: should no longer be used ...
2019-07-08Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds3-3/+0
Pull x86 platform updayes from Ingo Molnar: "Most of the commits add ACRN hypervisor guest support, plus two cleanups" * 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/jailhouse: Mark jailhouse_x2apic_available() as __init x86/platform/geode: Drop <linux/gpio.h> includes x86/acrn: Use HYPERVISOR_CALLBACK_VECTOR for ACRN guest upcall vector x86: Add support for Linux guests on an ACRN hypervisor x86/Kconfig: Add new X86_HV_CALLBACK_VECTOR config symbol
2019-06-29Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds1-1/+1
Pull EFI fixes from Ingo Molnar: "Four fixes: - fix a kexec crash on arm64 - fix a reboot crash on some Android platforms - future-proof the code for upcoming ACPI 6.2 changes - fix a build warning on x86" * 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efibc: Replace variable set function in notifier call x86/efi: fix a -Wtype-limits compilation warning efi/bgrt: Drop BGRT status field reserved bits check efi/memreserve: deal with memreserve entries in unmapped memory
2019-06-26x86/platform/geode: Drop <linux/gpio.h> includesLinus Walleij3-3/+0
These board files only use gpio_keys not gpio in general. This include is just surplus, delete it. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: linux-gpio@vger.kernel.org Cc: Andres Salomon <dilinger@queued.net> Cc: linux-geode@lists.infradead.org Cc: Andy Shevchenko <andy@infradead.org> Cc: Darren Hart <dvhart@infradead.org> Cc: platform-driver-x86@vger.kernel.org Link: https://lkml.kernel.org/r/20190626092119.3172-1-linus.walleij@linaro.org
2019-06-21x86/efi: fix a -Wtype-limits compilation warningQian Cai1-1/+1
Compiling a kernel with W=1 generates this warning, arch/x86/platform/efi/quirks.c:731:16: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] Fixes: 3425d934fc03 ("efi/x86: Handle page faults occurring while running ...") Signed-off-by: Qian Cai <cai@lca.pw> Acked-by: "Prakhya, Sai Praneeth" <sai.praneeth.prakhya@intel.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner3-14/+3
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-14Merge tag 'v5.2-rc4' into mauroJonathan Corbet66-309/+75
We need to pick up post-rc1 changes to various document files so they don't get lost in Mauro's massive RST conversion push.
2019-06-11Platform: OLPC: Make olpc_dt_compatible_match() static __initLubomir Rintel1-1/+1
Addresses a kbuild warning: >> WARNING: vmlinux.o(.text+0x3b764): Section mismatch in reference from the function olpc_dt_compatible_match() to the function .init.text:olpc_dt_getproperty() Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Reported-by: kbuild test robot <lkp@intel.com> Fixes: a7a9bacb9a32 (x86/platform/olpc: Use a correct version when making up a battery node) Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2019-06-08docs: fix broken documentation linksMauro Carvalho Chehab1-1/+1
Mostly due to x86 and acpi conversion, several documentation links are still pointing to the old file. Fix them. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Reviewed-by: Wolfram Sang <wsa@the-dreams.de> Reviewed-by: Sven Van Asbroeck <TheSven73@gmail.com> Reviewed-by: Bhupesh Sharma <bhsharma@redhat.com> Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441Thomas Gleixner30-149/+30
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation version 2 of the license extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 315 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531190115.503150771@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 422Thomas Gleixner1-4/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 101 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531190113.822954939@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 335Thomas Gleixner1-14/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 51 franklin st fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 111 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000436.567572064@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288Thomas Gleixner2-20/+2
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 263 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141901.208660670@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282Thomas Gleixner1-10/+1
Based on 1 normalized pattern(s): this software is licensed under the terms of the gnu general public license version 2 as published by the free software foundation and may be copied distributed and modified under those terms this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 285 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-03x86: platform: no need to check return value of debugfs_create functionsGreg Kroah-Hartman4-60/+13
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: <x86@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-02Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds3-3/+11
Pull EFI fixes from Ingo Molnar: "Two EFI fixes: a quirk for weird systabs, plus add more robust error handling in the old 1:1 mapping code" * 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi: Allow the number of EFI configuration tables entries to be zero efi/x86/Add missing error handling to old_memmap 1:1 mapping code
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156Thomas Gleixner4-56/+4
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152Thomas Gleixner7-36/+7
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-25efi: Allow the number of EFI configuration tables entries to be zeroRob Bradford1-0/+3
Only try and access the EFI configuration tables if there there are any reported. This allows EFI to be continued to used on systems where there are no configuration table entries. Signed-off-by: Rob Bradford <robert.bradford@intel.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Gen Zhang <blackgod016574@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/20190525112559.7917-3-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-05-25efi/x86/Add missing error handling to old_memmap 1:1 mapping codeGen Zhang2-3/+8
The old_memmap flow in efi_call_phys_prolog() performs numerous memory allocations, and either does not check for failure at all, or it does but fails to propagate it back to the caller, which may end up calling into the firmware with an incomplete 1:1 mapping. So let's fix this by returning NULL from efi_call_phys_prolog() on memory allocation failures only, and by handling this condition in the caller. Also, clean up any half baked sets of page tables that we may have created before returning with a NULL return value. Note that any failure at this level will trigger a panic() two levels up, so none of this makes a huge difference, but it is a nice cleanup nonetheless. [ardb: update commit log, add efi_call_phys_epilog() call on error path] Signed-off-by: Gen Zhang <blackgod016574@gmail.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rob Bradford <robert.bradford@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/20190525112559.7917-2-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
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