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2021-06-25powerpc/interrupt: Remove prep_irq_for_user_exit()Christophe Leroy1-13/+3
prep_irq_for_user_exit() has only one caller, squash it inside that caller. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210617155116.2167984-18-npiggin@gmail.com
2021-06-25powerpc/interrupt: Refactor prep_irq_for_{user/kernel_enabled}_exit()Christophe Leroy1-22/+7
prep_irq_for_user_exit() is a superset of prep_irq_for_kernel_enabled_exit(). Rename prep_irq_for_kernel_enabled_exit() as prep_irq_for_enabled_exit() and have prep_irq_for_user_exit() use it. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210617155116.2167984-17-npiggin@gmail.com
2021-06-25powerpc/interrupt: Interchange prep_irq_for_{kernel_enabled/user}_exit()Christophe Leroy1-12/+11
prep_irq_for_user_exit() is a superset of prep_irq_for_kernel_enabled_exit(). In order to allow refactoring in following patch, interchange the two. This will allow prep_irq_for_user_exit() to call a renamed version of prep_irq_for_kernel_enabled_exit(). Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210617155116.2167984-16-npiggin@gmail.com
2021-06-25powerpc/interrupt: Refactor interrupt_exit_user_prepare()Christophe Leroy1-54/+3
interrupt_exit_user_prepare() is a superset of interrupt_exit_user_prepare_main(). Refactor to avoid code duplication. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210617155116.2167984-15-npiggin@gmail.com
2021-06-25powerpc/interrupt: Rename and lightly change syscall_exit_prepare_main()Christophe Leroy1-5/+4
Rename syscall_exit_prepare_main() into interrupt_exit_prepare_main() Pass it the 'ret' so that it can 'or' it directly instead of oring twice, once inside the function and once outside. And remove 'r3' parameter which is not used. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> [np: split out some changes into other patches] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210617155116.2167984-14-npiggin@gmail.com
2021-06-25powerpc/64: use interrupt restart table to speed up return from interruptNicholas Piggin9-158/+457
Use the restart table facility to return from interrupt or system calls without disabling MSR[EE] or MSR[RI]. Interrupt return asm is put into the low soft-masked region, to prevent interrupts being processed here, although they are still taken as masked interrupts which causes SRRs to be clobbered, and a pending soft-masked interrupt to require replaying. The return code uses restart table regions to redirct to a fixup handler rather than continue with the exit, if such an interrupt happens. In this case the interrupt return is redirected to a fixup handler which reloads r1 for the interrupt stack and reloads registers and sets state up to replay the soft-masked interrupt and try the exit again. Some types of security exit fallback flushes and barriers are currently unable to cope with reentrant interrupts, e.g., because they store some state in the scratch SPR which would be clobbered even by masked interrupts. For now the interrupts-enabled exits are disabled when these flushes are used. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [mpe: Guard unused exit_must_hard_disable() as reported by lkp] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210617155116.2167984-13-npiggin@gmail.com
2021-06-25powerpc/64: treat low kernel text as irqs soft-maskedNicholas Piggin4-13/+35
Treat code below __end_soft_masked as soft-masked for the purpose of alternate return. 64s already mostly does this for scv entry. This will be used to exit from interrupts without disabling MSR[EE]. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210617155116.2167984-12-npiggin@gmail.com
2021-06-25powerpc/64: interrupt soft-enable race fixNicholas Piggin1-0/+95
Prevent interrupt restore from allowing racing hard interrupts going ahead of previous soft-pending ones, by using the soft-masked restart handler to allow a store to clear the soft-mask while knowing nothing is soft-pending. This probably doesn't matter much in practice, but it's a simple demonstrator / test case to exercise the restart table logic. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210617155116.2167984-11-npiggin@gmail.com
2021-06-25powerpc/64: allow alternate return locations for soft-masked interruptsNicholas Piggin7-3/+138
The exception table fixup adjusts a failed page fault's interrupt return location if it was taken at an address specified in the exception table, to a corresponding fixup handler address. Introduce a variation of that idea which adds a fixup table for NMIs and soft-masked asynchronous interrupts. This will be used to protect certain critical sections that are sensitive to being clobbered by interrupts coming in (due to using the same SPRs and/or irq soft-mask state). Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210617155116.2167984-10-npiggin@gmail.com
2021-06-25powerpc/64s: save one more register in the masked interrupt handlerNicholas Piggin1-14/+20
This frees up one more register (and takes advantage of that to clean things up a little bit). This register will be used in the following patch. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210617155116.2167984-9-npiggin@gmail.com
2021-06-25powerpc/64s: system call avoid setting MSR[RI] until we set MSR[EE]Nicholas Piggin2-4/+2
This extends the MSR[RI]=0 window a little further into the system call in order to pair RI and EE enabling with a single mtmsrd. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210617155116.2167984-8-npiggin@gmail.com
2021-06-25powerpc/64: move interrupt return asm to interrupt_64.SNicholas Piggin4-625/+640
The next patch would like to move interrupt return assembly code to a low location before general text, so move it into its own file and include via head_64.S Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210617155116.2167984-7-npiggin@gmail.com
2021-06-25powerpc/64s: avoid reloading (H)SRR registers if they are still validNicholas Piggin47-179/+418
When an interrupt is taken, the SRR registers are set to return to where it left off. Unless they are modified in the meantime, or the return address or MSR are modified, there is no need to reload these registers when returning from interrupt. Introduce per-CPU flags that track the validity of SRR and HSRR registers. These are cleared when returning from interrupt, when using the registers for something else (e.g., OPAL calls), when adjusting the return address or MSR of a context, and when context switching (which changes the return address and MSR). This improves the performance of interrupt returns. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [mpe: Fold in fixup patch from Nick] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210617155116.2167984-5-npiggin@gmail.com
2021-06-25powerpc/64s: introduce different functions to return from SRR vs HSRR interruptsNicholas Piggin4-55/+92
This makes no real difference yet except that HSRR type interrupts will use hrfid to return. This is important for the next patch. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210617155116.2167984-4-npiggin@gmail.com
2021-06-25powerpc: remove interrupt exit helpers unused argumentNicholas Piggin2-4/+4
The msr argument is not used, remove it. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210617155116.2167984-3-npiggin@gmail.com
2021-06-25powerpc/interrupt: Fix CONFIG ifdef typoChristophe Leroy1-1/+1
CONFIG_PPC_BOOK3S should be CONFIG_PPC_BOOK3S_64. restore_math is a no-op for other configurations. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> [np: split from another patch] Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210617155116.2167984-2-npiggin@gmail.com
2021-06-25powerpc/prom_init: Pass linux_banner to firmware via option vector 7Michael Ellerman1-0/+13
Pass the value of linux_banner to firmware via option vector 7. Option vector 7 is described in "LoPAR" Linux on Power Architecture Reference v2.9, in table B.7 on page 824: An ASCII character formatted null terminated string that describes the client operating system. The string shall be human readable and may be displayed on the console. The string can be up to 256 bytes total, including the nul terminator. linux_banner contains lots of information, and should make it possible to identify the exact kernel version that is running: const char linux_banner[] = "Linux version " UTS_RELEASE " (" LINUX_COMPILE_BY "@" LINUX_COMPILE_HOST ") (" LINUX_COMPILER ") " UTS_VERSION "\n"; For example: Linux version 4.15.0-144-generic (buildd@bos02-ppc64el-018) (gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)) #148-Ubuntu SMP Sat May 8 02:32:13 UTC 2021 (Ubuntu 4.15.0-144.148-generic 4.15.18) It's also printed at boot to the console/dmesg, which should make it possible to correlate what firmware receives with the console/dmesg on the machine. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210621064938.2021419-2-mpe@ellerman.id.au
2021-06-25powerpc/prom_init: Convert prom_strcpy() into prom_strscpy_pad()Michael Ellerman1-6/+24
In a subsequent patch we'd like to have something like a strscpy_pad() implementation usable in prom_init.c. Currently we have a strcpy() implementation with only one caller, so convert it into strscpy_pad() and update the caller. Reviewed-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210621064938.2021419-1-mpe@ellerman.id.au
2021-06-25powerpc/64s: Fix boot failure with 4K RadixMichael Ellerman1-1/+7
When using the Radix MMU our PGD is always 64K, and must be naturally aligned. For a 4K page size kernel that means page alignment of swapper_pg_dir is not sufficient, leading to failure to boot. Use the existing MAX_PTRS_PER_PGD which has the correct value, and avoids us hard-coding 64K here. Fixes: e72421a085a8 ("powerpc: Define swapper_pg_dir[] in C") Reported-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210624123420.2784187-1-mpe@ellerman.id.au
2021-06-24KVM: arm64: Set the MTE tag bit before releasing the pageMarc Zyngier1-4/+8
Setting a page flag without holding a reference to the page is living dangerously. In the tag-writing path, we drop the reference to the page by calling kvm_release_pfn_dirty(), and only then set the PG_mte_tagged bit. It would be safer to do it the other way round. Fixes: f0376edb1ddca ("KVM: arm64: Add ioctl to fetch/store tags in a guest") Cc: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Steven Price <steven.price@arm.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/87k0mjidwb.wl-maz@kernel.org
2021-06-24Merge branch 'for-next/sve' into for-next/coreWill Deacon4-11/+23
Optimise SVE switching for CPUs with 128-bit implementations. * for-next/sve: arm64/sve: Skip flushing Z registers with 128 bit vectors arm64/sve: Use the sve_flush macros in sve_load_from_fpsimd_state() arm64/sve: Split _sve_flush macro into separate Z and predicate flushes
2021-06-24Merge branch 'for-next/smccc' into for-next/coreWill Deacon2-0/+92
Add support for versions v1.2 and 1.3 of the SMC calling convention. * for-next/smccc: arm64: smccc: Support SMCCC v1.3 SVE register saving hint arm64: smccc: Add support for SMCCCv1.2 extended input/output registers
2021-06-24Merge branch 'for-next/ptrauth' into for-next/coreWill Deacon6-61/+88
Allow Pointer Authentication to be configured independently for kernel and userspace. * for-next/ptrauth: arm64: Conditionally configure PTR_AUTH key of the kernel. arm64: Add ARM64_PTR_AUTH_KERNEL config option
2021-06-24Merge branch 'for-next/perf' into for-next/coreWill Deacon3-7/+42
PMU driver cleanups for managing IRQ affinity and exposing event attributes via sysfs. * for-next/perf: (36 commits) drivers/perf: fix the missed ida_simple_remove() in ddr_perf_probe() perf/arm-cmn: Fix invalid pointer when access dtc object sharing the same IRQ number arm64: perf: Simplify EVENT ATTR macro in perf_event.c drivers/perf: Simplify EVENT ATTR macro in fsl_imx8_ddr_perf.c drivers/perf: Simplify EVENT ATTR macro in xgene_pmu.c drivers/perf: Simplify EVENT ATTR macro in qcom_l3_pmu.c drivers/perf: Simplify EVENT ATTR macro in qcom_l2_pmu.c drivers/perf: Simplify EVENT ATTR macro in SMMU PMU driver perf: Add EVENT_ATTR_ID to simplify event attributes perf/smmuv3: Don't trample existing events with global filter perf/hisi: Constify static attribute_group structs perf: qcom: Remove redundant dev_err call in qcom_l3_cache_pmu_probe() drivers/perf: hisi: Fix data source control arm64: perf: Add more support on caps under sysfs perf: qcom_l2_pmu: move to use request_irq by IRQF_NO_AUTOEN flag arm_pmu: move to use request_irq by IRQF_NO_AUTOEN flag perf: arm_spe: use DEVICE_ATTR_RO macro perf: xgene_pmu: use DEVICE_ATTR_RO macro perf: qcom: use DEVICE_ATTR_RO macro perf: arm_pmu: use DEVICE_ATTR_RO macro ...
2021-06-24Merge branch 'for-next/mte' into for-next/coreWill Deacon11-47/+146
KASAN optimisations for the hardware tagging (MTE) implementation. * for-next/mte: kasan: disable freed user page poisoning with HW tags arm64: mte: handle tags zeroing at page allocation time kasan: use separate (un)poison implementation for integrated init mm: arch: remove indirection level in alloc_zeroed_user_highpage_movable() kasan: speed up mte_set_mem_tag_range
2021-06-24Merge branch 'for-next/mm' into for-next/coreWill Deacon18-62/+66
Lots of cleanup to our various page-table definitions, but also some non-critical fixes and removal of some unnecessary memory types. The most interesting change here is the reduction of ARCH_DMA_MINALIGN back to 64 bytes, since we're not aware of any machines that need a higher value with the way the code is structured (only needed for non-coherent DMA). * for-next/mm: arm64: tlb: fix the TTL value of tlb_get_level arm64/mm: Rename ARM64_SWAPPER_USES_SECTION_MAPS arm64: head: fix code comments in set_cpu_boot_mode_flag arm64: mm: drop unused __pa(__idmap_text_start) arm64: mm: fix the count comments in compute_indices arm64/mm: Fix ttbr0 values stored in struct thread_info for software-pan arm64: mm: Pass original fault address to handle_mm_fault() arm64/mm: Drop SECTION_[SHIFT|SIZE|MASK] arm64/mm: Use CONT_PMD_SHIFT for ARM64_MEMSTART_SHIFT arm64/mm: Drop SWAPPER_INIT_MAP_SIZE arm64: mm: decode xFSC in mem_abort_decode() arm64: mm: Add is_el1_data_abort() helper arm64: cache: Lower ARCH_DMA_MINALIGN to 64 (L1_CACHE_BYTES) arm64: mm: Remove unused support for Normal-WT memory type arm64: acpi: Map EFI_MEMORY_WT memory as Normal-NC arm64: mm: Remove unused support for Device-GRE memory type arm64: mm: Use better bitmap_zalloc() arm64/mm: Make vmemmap_free() available only with CONFIG_MEMORY_HOTPLUG arm64/mm: Remove [PUD|PMD]_TABLE_BIT from [pud|pmd]_bad() arm64/mm: Validate CONFIG_PGTABLE_LEVELS
2021-06-24Merge branch 'for-next/misc' into for-next/coreWill Deacon1-1/+1
Reduce loglevel of useless print during CPU offlining. * for-next/misc: arm64: smp: Bump debugging information print down to KERN_DEBUG
2021-06-24Merge branch 'for-next/kasan' into for-next/coreWill Deacon4-2/+99
Optimise out-of-line KASAN checking when using software tagging. * for-next/kasan: kasan: arm64: support specialized outlined tag mismatch checks
2021-06-24Merge branch 'for-next/insn' into for-next/coreWill Deacon17-265/+358
Refactoring of our instruction decoding routines and addition of some missing encodings. * for-next/insn: arm64: insn: avoid circular include dependency arm64: insn: move AARCH64_INSN_SIZE into <asm/insn.h> arm64: insn: decouple patching from insn code arm64: insn: Add load/store decoding helpers arm64: insn: Add some opcodes to instruction decoder arm64: insn: Add barrier encodings arm64: insn: Add SVE instruction class arm64: Move instruction encoder/decoder under lib/ arm64: Move aarch32 condition check functions arm64: Move patching utilities out of instruction encoding/decoding
2021-06-24Merge branch 'for-next/entry' into for-next/coreWill Deacon11-431/+410
The never-ending entry.S refactoring continues, putting us in a much better place wrt compiler instrumentation whilst moving more of the code into C. * for-next/entry: arm64: idle: don't instrument idle code with KCOV arm64: entry: don't instrument entry code with KCOV arm64: entry: make NMI entry/exit functions static arm64: entry: split SDEI entry arm64: entry: split bad stack entry arm64: entry: fold el1_inv() into el1h_64_sync_handler() arm64: entry: handle all vectors with C arm64: entry: template the entry asm functions arm64: entry: improve bad_mode() arm64: entry: move bad_mode() to entry-common.c arm64: entry: consolidate EL1 exception returns arm64: entry: organise entry vectors consistently arm64: entry: organise entry handlers consistently arm64: entry: convert IRQ+FIQ handlers to C arm64: entry: add a call_on_irq_stack helper arm64: entry: move NMI preempt logic to C arm64: entry: move arm64_preempt_schedule_irq to entry-common.c arm64: entry: convert SError handlers to C arm64: entry: unmask IRQ+FIQ after EL0 handling arm64: remove redundant local_daif_mask() in bad_mode()
2021-06-24Merge branch 'for-next/cpuidle' into for-next/coreWill Deacon4-33/+60
Fix resume from idle when pNMI is being used. * for-next/cpuidle: arm64: suspend: Use cpuidle context helpers in cpu_suspend() PSCI: Use cpuidle context helpers in psci_cpu_suspend_enter() arm64: Convert cpu_do_idle() to using cpuidle context helpers arm64: Add cpuidle context save/restore helpers
2021-06-24Merge branch 'for-next/cpufeature' into for-next/coreWill Deacon8-97/+287
Additional CPU sanity checks for MTE and preparatory changes for systems where not all of the CPUs support 32-bit EL0. * for-next/cpufeature: arm64: Restrict undef hook for cpufeature registers arm64: Kill 32-bit applications scheduled on 64-bit-only CPUs KVM: arm64: Kill 32-bit vCPUs on systems with mismatched EL0 support arm64: Allow mismatched 32-bit EL0 support arm64: cpuinfo: Split AArch32 registers out into a separate struct arm64: Check if GMID_EL1.BS is the same on all CPUs arm64: Change the cpuinfo_arm64 member type for some sysregs to u64
2021-06-24Merge branch 'for-next/cortex-strings' into for-next/coreWill Deacon10-954/+902
Update our kernel string routines to the latest Cortex Strings implementation. * for-next/cortex-strings: arm64: update string routine copyrights and URLs arm64: Rewrite __arch_clear_user() arm64: Better optimised memchr() arm64: Import latest memcpy()/memmove() implementation arm64: Add assembly annotations for weak-PI-alias madness arm64: Import latest version of Cortex Strings' strncmp arm64: Import updated version of Cortex Strings' strlen arm64: Import latest version of Cortex Strings' strcmp arm64: Import latest version of Cortex Strings' memcmp
2021-06-24Merge branch 'for-next/caches' into for-next/coreWill Deacon27-218/+276
Big cleanup of our cache maintenance routines, which were confusingly named and inconsistent in their implementations. * for-next/caches: arm64: Rename arm64-internal cache maintenance functions arm64: Fix cache maintenance function comments arm64: sync_icache_aliases to take end parameter instead of size arm64: __clean_dcache_area_pou to take end parameter instead of size arm64: __clean_dcache_area_pop to take end parameter instead of size arm64: __clean_dcache_area_poc to take end parameter instead of size arm64: __flush_dcache_area to take end parameter instead of size arm64: dcache_by_line_op to take end parameter instead of size arm64: __inval_dcache_area to take end parameter instead of size arm64: Fix comments to refer to correct function __flush_icache_range arm64: Move documentation of dcache_by_line_op arm64: assembler: remove user_alt arm64: Downgrade flush_icache_range to invalidate arm64: Do not enable uaccess for invalidate_icache_range arm64: Do not enable uaccess for flush_icache_range arm64: Apply errata to swsusp_arch_suspend_exit arm64: assembler: add conditional cache fixups arm64: assembler: replace `kaddr` with `addr`
2021-06-24bpf, x86: Remove unused cnt increase from EMIT macroJiri Olsa1-32/+12
Removing unused cnt increase from EMIT macro together with cnt declarations. This was introduced in commit [1] to ensure proper code generation. But that code was removed in commit [2] and this extra code was left in. [1] b52f00e6a715 ("x86: bpf_jit: implement bpf_tail_call() helper") [2] ebf7d1f508a7 ("bpf, x64: rework pro/epilogue and tailcall handling in JIT") Signed-off-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20210623112504.709856-1-jolsa@kernel.org
2021-06-24ARM: dts: aspeed: Fix AST2600 machines line namesJoel Stanley2-8/+2
Tacoma and Rainier both have a line-names array that is too long: gpio gpiochip0: gpio-line-names is length 232 but should be at most length 208 This was probably copied from an AST2500 device tree that did have more GPIOs on the controller. Fixes: e9b24b55ca4f ("ARM: dts: aspeed: rainier: Add gpio line names") Fixes: 2f68e4e7df67 ("ARM: dts: aspeed: tacoma: Add gpio line names") Link: https://lore.kernel.org/r/20210624090742.56640-1-joel@jms.id.au Signed-off-by: Joel Stanley <joel@jms.id.au>
2021-06-24KVM: nVMX: Handle split-lock #AC exceptions that happen in L2Sean Christopherson4-2/+11
Mark #ACs that won't be reinjected to the guest as wanted by L0 so that KVM handles split-lock #AC from L2 instead of forwarding the exception to L1. Split-lock #AC isn't yet virtualized, i.e. L1 will treat it like a regular #AC and do the wrong thing, e.g. reinject it into L2. Fixes: e6f8b6c12f03 ("KVM: VMX: Extend VMXs #AC interceptor to handle split lock #AC in guest") Cc: Xiaoyao Li <xiaoyao.li@intel.com> Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20210622172244.3561540-1-seanjc@google.com> Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-24KVM: x86/mmu: Fix uninitialized boolean variable flushColin Ian King1-1/+1
In the case where kvm_memslots_have_rmaps(kvm) is false the boolean variable flush is not set and is uninitialized. If is_tdp_mmu_enabled(kvm) is true then the call to kvm_tdp_mmu_zap_collapsible_sptes passes the uninitialized value of flush into the call. Fix this by initializing flush to false. Addresses-Coverity: ("Uninitialized scalar variable") Fixes: e2209710ccc5 ("KVM: x86/mmu: Skip rmap operations if rmaps not allocated") Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Sean Christopherson <seanjc@google.com> Message-Id: <20210622150912.23429-1-colin.king@canonical.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-24KVM: x86: Print CPU of last attempted VM-entry when dumping VMCS/VMCBJim Mattson2-0/+4
Failed VM-entry is often due to a faulty core. To help identify bad cores, print the id of the last logical processor that attempted VM-entry whenever dumping a VMCS or VMCB. Signed-off-by: Jim Mattson <jmattson@google.com> Message-Id: <20210621221648.1833148-1-jmattson@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-24x86/resctrl: Fix kernel-doc in internal.hFabio M. De Francesco1-7/+14
Add description of undocumented parameters. Issues detected by scripts/kernel-doc. Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Link: https://lkml.kernel.org/r/20210618223206.29539-1-fmdefrancesco@gmail.com
2021-06-24x86/resctrl: Fix kernel-doc in pseudo_lock.cFabio M. De Francesco1-2/+8
Add undocumented parameters detected by scripts/kernel-doc. Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Link: https://lkml.kernel.org/r/20210616181530.4094-1-fmdefrancesco@gmail.com
2021-06-24perf/x86/intel/lbr: Zero the xstate buffer on allocationThomas Gleixner1-1/+2
XRSTORS requires a valid xstate buffer to work correctly. XSAVES does not guarantee to write a fully valid buffer according to the SDM: "XSAVES does not write to any parts of the XSAVE header other than the XSTATE_BV and XCOMP_BV fields." XRSTORS triggers a #GP: "If bytes 63:16 of the XSAVE header are not all zero." It's dubious at best how this can work at all when the buffer is not zeroed before use. Allocate the buffers with __GFP_ZERO to prevent XRSTORS failure. Fixes: ce711ea3cab9 ("perf/x86/intel/lbr: Support XSAVES/XRSTORS for LBR context switch") Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/87wnr0wo2z.ffs@nanos.tec.linutronix.de
2021-06-23Merge tag 'v5.14-rockchip-dts64-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into arm/dtOlof Johansson5-0/+4128
Basic support for the new rk3568 soc. * tag 'v5.14-rockchip-dts64-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip: arm64: dts: rockchip: add basic dts for RK3568 EVB arm64: dts: rockchip: add core dtsi for RK3568 SoC arm64: dts: rockchip: add generic pinconfig settings used by most Rockchip socs Link: https://lore.kernel.org/r/4876354.ZzFAyJQhcr@diego Signed-off-by: Olof Johansson <olof@lixom.net>
2021-06-23Merge tag 'v5.14-rockchip-dts32-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into arm/dtOlof Johansson5-2/+67
Nodes for the Hantro-based video codecs on rk3036, rk3066, rk3188 and rk322x. * tag 'v5.14-rockchip-dts32-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip: ARM: dts: rockchip: add vpu and vdec node for RK322x ARM: dts: rockchip: add vpu nodes for RK3066 and RK3188 ARM: dts: rockchip: add vpu node for RK3036 Link: https://lore.kernel.org/r/4611716.rnzMqkiUVr@diego Signed-off-by: Olof Johansson <olof@lixom.net>
2021-06-23Merge tag 'qcom-arm64-defconfig-for-5.14-1' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/defconfigOlof Johansson1-0/+2
Additional Qualcomm ARM64 defconfig udpate for v5.14 The Qualcomm Robotics RB3 Development Kit has a Renesas USB HUB on one of the PCIe busses, which requires the releated driver to be enabled to provide functional Ethernet and additional USB host ports. * tag 'qcom-arm64-defconfig-for-5.14-1' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: arm64: defconfig: Enable renesas usb xhci pci host controller Link: https://lore.kernel.org/r/20210621165015.943060-1-bjorn.andersson@linaro.org Signed-off-by: Olof Johansson <olof@lixom.net>
2021-06-23Merge tag 'qcom-arm64-for-5.14-1' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/dtOlof Johansson20-139/+2077
Additional Qualcomm ARM64 DT updates for v5.14 After a series of refactorings and additions to the SM8150 and SM8250 platform definitions, this adds new devicetree definitions for Sony Xperia 1, 5, 1II and 5II. It defines the Qualcomm SA8155p automotive platform as a derrivative of SM8150 and introduces the Automotive Deveopment Platform board. Lastly ipq8074 gains the definiton of an additiona I2C master and the SDHCI bus votes for sc7180 are tweaked. * tag 'qcom-arm64-for-5.14-1' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: (25 commits) arm64: dts: ipq8074: Add QUP6 I2C node arm64: dts: qcom: sc7180: bus votes for eMMC and SD card arm64: dts: qcom: sm8250-edo: Add Samsung touchscreen arm64: dts: qcom: sm8250-edo: Enable GPI DMA arm64: dts: qcom: sm8250-edo: Enable ADSP/CDSP/SLPI arm64: dts: qcom: sm8250-edo: Enable PCIe arm64: dts: qcom: sm8250: Commonize PCIe pins arm64: dts: qcom: sm8250-edo: Add hardware keys arm64: dts: qcom: sa8155p-adp: Add base dts file arm64: dts: qcom: pmm8155au_2: Add base dts file arm64: dts: qcom: pmm8155au_1: Add base dts file arm64: dts: qcom: sm8250-edo: Fix up double "pinctrl-1" arm64: dts: qcom: sm8[12]50-pm8150: Move RESIN to pm8150 dtsi arm64: dts: qcom: sm8250: Add support for SONY Xperia 1 II / 5 II (Edo platform) arm64: dts: qcom: sm8250: Move gpio.h inclusion to SoC DTSI arm64: dts: qcom: sm8250: Add SDHCI2 sleep mode pinctrl arm64: dts: qcom: sm8150: Add support for SONY Xperia 1 / 5 (Kumano platform) arm64: dts: qcom: sm8150: Disable Adreno and modem by default arm64: dts: qcom: sm8250: Disable Adreno and Venus by default arm64: dts: qcom: sm8250: Add GPI DMA nodes ... Link: https://lore.kernel.org/r/20210621164946.942956-1-bjorn.andersson@linaro.org Signed-off-by: Olof Johansson <olof@lixom.net>
2021-06-23Merge tag 'v5.14-rockchip-dts64-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into arm/dtOlof Johansson20-76/+515
A lot of dt-yaml related fixes; PCIe, USB and pwm-fans for Helios64; Display rotation and audio codec for the Odroid Go Advance; IR, spdif and usb-c support for rk3399-firefly; USB support for rk3308 and some rk3328 boards and setting the PCIe link speed to actually only supported speed on rk3399. * tag 'v5.14-rockchip-dts64-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip: (30 commits) arm64: dts: rockchip: Re-add regulator-always-on for vcc_sdio for rk3399-roc-pc arm64: dts: rockchip: Re-add regulator-boot-on, regulator-always-on for vdd_gpu on rk3399-roc-pc arm64: dts: rockchip: add ir-receiver for rk3399-roc-pc arm64: dts: rockchip: Add USB-C port details for rk3399 Firefly arm64: dts: rockchip: Sort rk3399 firefly pinmux entries arm64: dts: rockchip: add infrared receiver node to RK3399 Firefly arm64: dts: rockchip: add SPDIF node for rk3399-firefly arm64: dts: rockchip: Add Rotation Property for OGA Panel arm64: dts: rockchip: Add support for USB on helios64 arm64: dts: rockchip: add USB support to rk3308.dtsi arm64: dts: rockchip: rename nodename for phy-rockchip-inno-usb2 arm64: dts: rockchip: add rk817 codec to Odroid Go arm64: dts: rename grf-gpio nodename in rk3328.dtsi arm64: dts: rockchip: Add support for PCIe on helios64 arm64: dts: rockchip: Add support for two PWM fans on helios64 arm64: dts: rockchip: fix regulator-gpio states array arm64: dts: rockchip: add #power-domain-cells to power domain nodes arm64: dts: rockchip: Fix power-controller node names for rk3399 arm64: dts: rockchip: Fix power-controller node names for rk3328 arm64: dts: rockchip: Fix power-controller node names for px30 ... Link: https://lore.kernel.org/r/2796982.e9J7NaK4W3@phil Signed-off-by: Olof Johansson <olof@lixom.net>
2021-06-23Merge tag 'v5.14-rockchip-dts32-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into arm/dtOlof Johansson17-93/+295
A lot of fixes related to the dt-binding yaml conversion, power-domain additions for rk322x and rk3036 and the missing mmc aliases move to board files on rk3066/rk3188. * tag 'v5.14-rockchip-dts32-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip: ARM: dts: rockchip: add power controller for RK322x ARM: dts: rockchip: add power controller for RK3036 ARM: dts: rockchip: add labels to the timer nodes on rk3066a ARM: dts: rockchip: fix supply properties in io-domains nodes ARM: dts: rockchip: remove #phy-cells from usbphy node rk3066/rk3188 ARM: dts: rockchip: rename nodename for phy-rockchip-inno-usb2 ARM: dts: rockchip: move mmc aliases to board dts on rk3066/rk3188 ARM: dts: rockchip: move and restyle grf nodes rk3066/rk3188 ARM: dts: rockchip: rename vcc_stdby node name for rk3066a-rayeager.dts ARM: dts: rockchip: Remove more clock-names from PWM nodes ARM: dts: rockchip: add #power-domain-cells to power domain nodes ARM: dts: rockchip: Fix power-controller node names for rk3288 ARM: dts: rockchip: Fix power-controller node names for rk3188 ARM: dts: rockchip: Fix power-controller node names for rk3066a ARM: dts: rockchip: Remove useless interrupt-names on IOMMU node on rk3036 ARM: dts: rockchip: Fix IOMMU nodes properties on rk322x ARM: dts: rockchip: Fix the timer clocks order ARM: dts: rockchip: fix pinctrl sleep nodename for rk3036-kylin and rk3288 ARM: dts: rockchip: Fix thermal sensor cells o rk322x Link: https://lore.kernel.org/r/2084346.irdbgypaU6@phil Signed-off-by: Olof Johansson <olof@lixom.net>
2021-06-23Merge tag 'mvebu-dt64-5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu into arm/dtOlof Johansson4-6/+13
mvebu dt64 for 5.14 (part 1) on Armada 3700: Move turris-mox-rwtm firmware node to a more generic place on AP807: Make SD/MMC controller still usbale with older kernel CP11x: update comphy references cn9130: Improve NAND partitioning scheme for cn9130-db * tag 'mvebu-dt64-5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu: arch/arm64/boot/dts/marvell: fix NAND partitioning scheme Documentation/bindings: phy: update references to cp11x arm64: dts: ensure backward compatibility of the AP807 Xenon arm64: dts: marvell: armada-37xx: move firmware node to generic dtsi file Link: https://lore.kernel.org/r/878s3429zi.fsf@BL-laptop Signed-off-by: Olof Johansson <olof@lixom.net>
2021-06-23Merge tag 'ti-k3-dt-for-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/nmenon/linux into arm/dtOlof Johansson16-195/+751
Devicetree changes for TI K3 platforms for v5.14 merge window: * New features: - AM64 gains PCIe and USB3 for am64-sk board, R5 remote proc (includes AM64 rproc bindings tag from Bjorn's tree) - AM65, J721e gains ICSSG MDIO nodes - AM65: UHS mode speed enabled on am65 * Fixes: - Fixups on AM64 SRAM model thanks to a ROM bug for USB DFU mode - Schema related cleanups across j7*, am65, 64 - Few misc Fixups on AM64 where MAC address could conflict; j7200 for USB2 Rx sensitivity etc. * tag 'ti-k3-dt-for-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/nmenon/linux: (37 commits) arm64: dts: ti: k3-am642-evm/sk: Add DDR carveout memory nodes for R5Fs arm64: dts: ti: k3-am642-evm/sk: Add mailboxes to R5Fs arm64: dts: ti: k3-am64-main: Add MAIN domain R5F cluster nodes arm64: dts: ti: k3-am64-main: Update TF-A load address to workaround USB DFU limitation arm64: dts: ti: k3-am64-main: Reserve OCMRAM for DMSC-lite and secure proxy communication arm64: dts: ti: k3-am64-main: Update TF-A's maximum size and node name arm64: dts: ti: Drop reg-io-width/reg-shift from UART nodes arm64: dts: ti: k3-am642-evm: align ti,pindir-d0-out-d1-in property with dt-shema arm64: dts: ti: am65: align ti,pindir-d0-out-d1-in property with dt-shema arm64: dts: ti: k3-am642-main: fix ports mac properties arm64: dts: ti: iot2050: Configure r5f cluster on basic variant in split mode arm64: dts: ti: k3-am642-sk: Disable PCIe arm64: dts: ti: k3-am642-sk: Enable USB Super-Speed HOST port arm64: dts: ti: k3-am642-evm: Enable PCIe and SERDES arm64: dts: ti: k3-am64-main: Add PCIe DT node arm64: dts: ti: k3-am64-main: Add SERDES DT node arm64: dts: ti: k3-j721e-common-proc-board: Re-name "link" name as "phy" arm64: dts: ti: k3-j721e-common-proc-board: Use external clock for SERDES arm64: dts: ti: k3-j721e-main: Add #clock-cells property to serdes DT node arm64: dts: ti: k3-j721e-main: Fix external refclk input to SERDES ... Link: https://lore.kernel.org/r/20210619000150.6ooqnxxsnsvncs5u@pushchair Signed-off-by: Olof Johansson <olof@lixom.net>