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Commit 72906f38 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

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
parents 3ccabd6d 617ab45c

arch/x86/hyperv/mmu.c

+10 −2
Original line number Diff line number Diff line
@@ -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;