Messages in this thread Patch in this message | | | Date | Mon, 29 Jan 2018 12:23:17 +0100 | From | Ingo Molnar <> | Subject | [GIT PULL] x86/hyperv change for v4.16 |
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Linus,
Please pull the latest x86-hyperv-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-hyperv-for-linus
# HEAD: 617ab45c9a8900e64a78b43696c02598b8cad68b x86/hyperv: Stop suppressing X86_FEATURE_PCID
Enable PCID support on Hyper-V guests.
Thanks,
Ingo
------------------> Vitaly Kuznetsov (1): x86/hyperv: Stop suppressing X86_FEATURE_PCID
arch/x86/hyperv/mmu.c | 12 ++++++++++-- 1 file 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;
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