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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-01-31 00:04:50 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-01-31 00:04:50 +0300 |
| commit | 72906f38934a49faf4d2d38ea9ae32adcf7d5d0c (patch) | |
| tree | 804605afa9073a35c4fee2db686fefc77aa8b490 /arch | |
| parent | 3ccabd6d9d9b0da5780e0386b4bf7c5f07669e37 (diff) | |
| parent | 617ab45c9a8900e64a78b43696c02598b8cad68b (diff) | |
| download | linux-72906f38934a49faf4d2d38ea9ae32adcf7d5d0c.tar.xz | |
Merge branch 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 hyperv update from Ingo Molnar:
"Enable PCID support on Hyper-V guests"
* 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/hyperv: Stop suppressing X86_FEATURE_PCID
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/hyperv/mmu.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/x86/hyperv/mmu.c b/arch/x86/hyperv/mmu.c index 9cc9e1c1e2db..56c9ebac946f 100644 --- a/arch/x86/hyperv/mmu.c +++ b/arch/x86/hyperv/mmu.c @@ -137,7 +137,12 @@ static void hyperv_flush_tlb_others(const struct cpumask *cpus, } if (info->mm) { + /* + * AddressSpace argument must match the CR3 with PCID bits + * stripped out. + */ flush->address_space = virt_to_phys(info->mm->pgd); + flush->address_space &= CR3_ADDR_MASK; flush->flags = 0; } else { flush->address_space = 0; @@ -219,7 +224,12 @@ static void hyperv_flush_tlb_others_ex(const struct cpumask *cpus, } if (info->mm) { + /* + * AddressSpace argument must match the CR3 with PCID bits + * stripped out. + */ flush->address_space = virt_to_phys(info->mm->pgd); + flush->address_space &= CR3_ADDR_MASK; flush->flags = 0; } else { flush->address_space = 0; @@ -278,8 +288,6 @@ void hyperv_setup_mmu_ops(void) if (!(ms_hyperv.hints & HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED)) return; - setup_clear_cpu_cap(X86_FEATURE_PCID); - if (!(ms_hyperv.hints & HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED)) { pr_info("Using hypercall for remote TLB flush\n"); pv_mmu_ops.flush_tlb_others = hyperv_flush_tlb_others; |