linux-dev/arch/x86/platform, branch linus/master

x86: Fix all occurences of the "the the" typo

2022-05-27T10:15:39Z

Rather than waiting for the bots to fix these one-by-one, fix all occurences of "the the" throughout arch/x86. Signed-off-by: Bo Liu Signed-off-by: Ingo Molnar Cc: Paolo Bonzini Link: https://lore.kernel.org/r/20220527061400.5694-1-liubo03@inspur.com

Merge tag 'x86_platform_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-05-24T02:11:08Z

Pull x86 platform updates from Borislav Petkov: - A couple of changes enabling SGI UV5 support * tag 'x86_platform_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/platform/uv: Log gap hole end size x86/platform/uv: Update TSC sync state for UV5 x86/platform/uv: Update NMI Handler for UV5

Merge tag 'x86_cleanups_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-05-24T01:17:09Z

Pull x86 cleanups from Borislav Petkov: - Serious sanitization and cleanup of the whole APERF/MPERF and frequency invariance code along with removing the need for unnecessary IPIs - Finally remove a.out support - The usual trivial cleanups and fixes all over x86 * tag 'x86_cleanups_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits) x86: Remove empty files x86/speculation: Add missing srbds=off to the mitigations= help text x86/prctl: Remove pointless task argument x86/aperfperf: Make it correct on 32bit and UP kernels x86/aperfmperf: Integrate the fallback code from show_cpuinfo() x86/aperfmperf: Replace arch_freq_get_on_cpu() x86/aperfmperf: Replace aperfmperf_get_khz() x86/aperfmperf: Store aperf/mperf data for cpu frequency reads x86/aperfmperf: Make parts of the frequency invariance code unconditional x86/aperfmperf: Restructure arch_scale_freq_tick() x86/aperfmperf: Put frequency invariance aperf/mperf data into a struct x86/aperfmperf: Untangle Intel and AMD frequency invariance init x86/aperfmperf: Separate AP/BP frequency invariance init x86/smp: Move APERF/MPERF code where it belongs x86/aperfmperf: Dont wake idle CPUs in arch_freq_get_on_cpu() x86/process: Fix kernel-doc warning due to a changed function name x86: Remove a.out support x86/mm: Replace nodes_weight() with nodes_empty() where appropriate x86: Replace cpumask_weight() with cpumask_empty() where appropriate x86/pkeys: Remove __arch_set_user_pkey_access() declaration ...

Merge tag 'efi-next-for-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi

2022-05-23T18:27:24Z

Pull EFI updates from Ard Biesheuvel: - Allow runtime services to be re-enabled at boot on RT kernels. - Provide access to secrets injected into the boot image by CoCo hypervisors (COnfidential COmputing) - Use DXE services on x86 to make the boot image executable after relocation, if needed. - Prefer mirrored memory for randomized allocations. - Only randomize the placement of the kernel image on arm64 if the loader has not already done so. - Add support for obtaining the boot hartid from EFI on RISC-V. * tag 'efi-next-for-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi: riscv/efi_stub: Add support for RISCV_EFI_BOOT_PROTOCOL efi: stub: prefer mirrored memory for randomized allocations efi/arm64: libstub: run image in place if randomized by the loader efi: libstub: pass image handle to handle_kernel_image() efi: x86: Set the NX-compatibility flag in the PE header efi: libstub: ensure allocated memory to be executable efi: libstub: declare DXE services table efi: Add missing prototype for efi_capsule_setup_info docs: security: Add secrets/coco documentation efi: Register efi_secret platform device if EFI secret area is declared virt: Add efi_secret module to expose confidential computing secrets efi: Save location of EFI confidential computing area efi: Allow to enable EFI runtime services by default on RT

x86,xen,objtool: Add UNWIND hint

2022-04-19T19:58:47Z

SYM_CODE_START*() doesn't get auto-validated and needs an UNWIND hint to get checked, add one. vmlinux.o: warning: objtool: pvh_start_xen()+0x0: unreachable Reported-by: Thomas Gleixner Reported-by: Rick Edgecombe Signed-off-by: Peter Zijlstra (Intel) Acked-by: Josh Poimboeuf Link: https://lore.kernel.org/r/20220408094718.321246297@infradead.org

efi: Save location of EFI confidential computing area

2022-04-13T17:11:18Z

Confidential computing (coco) hardware such as AMD SEV (Secure Encrypted Virtualization) allows a guest owner to inject secrets into the VMs memory without the host/hypervisor being able to read them. Firmware support for secret injection is available in OVMF, which reserves a memory area for secret injection and includes a pointer to it the in EFI config table entry LINUX_EFI_COCO_SECRET_TABLE_GUID. If EFI exposes such a table entry, uefi_init() will keep a pointer to the EFI config table entry in efi.coco_secret, so it can be used later by the kernel (specifically drivers/virt/coco/efi_secret). It will also appear in the kernel log as "CocoSecret=ADDRESS"; for example: [ 0.000000] efi: EFI v2.70 by EDK II [ 0.000000] efi: CocoSecret=0x7f22e680 SMBIOS=0x7f541000 ACPI=0x7f77e000 ACPI 2.0=0x7f77e014 MEMATTR=0x7ea0c018 The new functionality can be enabled with CONFIG_EFI_COCO_SECRET=y. Signed-off-by: Dov Murik Reviewed-by: Gerd Hoffmann Link: https://lore.kernel.org/r/20220412212127.154182-2-dovmurik@linux.ibm.com Signed-off-by: Ard Biesheuvel

x86: Replace cpumask_weight() with cpumask_empty() where appropriate

2022-04-10T20:35:38Z

In some cases, x86 code calls cpumask_weight() to check if any bit of a given cpumask is set. This can be done more efficiently with cpumask_empty() because cpumask_empty() stops traversing the cpumask as soon as it finds first set bit, while cpumask_weight() counts all bits unconditionally. Signed-off-by: Yury Norov Signed-off-by: Thomas Gleixner Reviewed-by: Steve Wahl Link: https://lore.kernel.org/r/20220210224933.379149-17-yury.norov@gmail.com

x86/platform/uv: Update NMI Handler for UV5

2022-04-07T15:23:20Z

Update NMI handler for UV5 hardware. A platform register changed, and UV5 only uses one of the two NMI methods used on previous hardware. Signed-off-by: Mike Travis Signed-off-by: Steve Wahl Signed-off-by: Borislav Petkov Reviewed-by: Dimitri Sivanich Acked-by: Thomas Gleixner Link: https://lore.kernel.org/r/20220406195149.228164-2-steve.wahl@hpe.com

objtool,efi: Update __efi64_thunk annotation

2022-03-15T09:32:32Z

The current annotation relies on not running objtool on the file; this won't work when running objtool on vmlinux.o. Instead explicitly mark __efi64_thunk() to be ignored. This preserves the status quo, which is somewhat unfortunate. Luckily this code is hardly ever used. Signed-off-by: Peter Zijlstra (Intel) Acked-by: Josh Poimboeuf Link: https://lore.kernel.org/r/20220308154317.402118218@infradead.org

Merge tag 'x86_core_for_v5.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-01-13T00:31:19Z

Pull x86 core updates from Borislav Petkov: - Get rid of all the .fixup sections because this generates misleading/wrong stacktraces and confuse RELIABLE_STACKTRACE and LIVEPATCH as the backtrace misses the function which is being fixed up. - Add Straight Line Speculation mitigation support which uses a new compiler switch -mharden-sls= which sticks an INT3 after a RET or an indirect branch in order to block speculation after them. Reportedly, CPUs do speculate behind such insns. - The usual set of cleanups and improvements * tag 'x86_core_for_v5.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (32 commits) x86/entry_32: Fix segment exceptions objtool: Remove .fixup handling x86: Remove .fixup section x86/word-at-a-time: Remove .fixup usage x86/usercopy: Remove .fixup usage x86/usercopy_32: Simplify __copy_user_intel_nocache() x86/sgx: Remove .fixup usage x86/checksum_32: Remove .fixup usage x86/vmx: Remove .fixup usage x86/kvm: Remove .fixup usage x86/segment: Remove .fixup usage x86/fpu: Remove .fixup usage x86/xen: Remove .fixup usage x86/uaccess: Remove .fixup usage x86/futex: Remove .fixup usage x86/msr: Remove .fixup usage x86/extable: Extend extable functionality x86/entry_32: Remove .fixup usage x86/entry_64: Remove .fixup usage x86/copy_mc_64: Remove .fixup usage ...