Re: [PATCH 20/21] KVM: MIPS: Account pages used for GPA page tables

Huacai Chen
2020-06-08T08:57:11Z

Reviewed-by: Huacai Chen <chenhc@lemote.com>

On Sat, Jun 6, 2020 at 5:40 AM Sean Christopherson
<sean.j.christopherson@intel.com> wrote:
>
> Use GFP_KERNEL_ACCOUNT instead of GFP_KERNEL when allocating pages for
> the the GPA page tables. The primary motivation for accounting the
> allocations is to align with the common KVM memory cache helpers in
> preparation for moving to the common implementation in a future patch.
> The actual accounting is a bonus side effect.
>
> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
> ---
> arch/mips/kvm/mmu.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/mips/kvm/mmu.c b/arch/mips/kvm/mmu.c
> index 94562c54b930..41a4a063a730 100644
> --- a/arch/mips/kvm/mmu.c
> +++ b/arch/mips/kvm/mmu.c
> @@ -32,7 +32,7 @@ static int mmu_topup_memory_cache(struct kvm_mmu_memory_cache *cache, int min)
> if (cache->nobjs >= min)
> return 0;
> while (cache->nobjs < ARRAY_SIZE(cache->objects)) {
> - page = (void *)__get_free_page(GFP_KERNEL);
> + page = (void *)__get_free_page(GFP_KERNEL_ACCOUNT);
> if (!page)
> return -ENOMEM;
> cache->objects[cache->nobjs++] = page;
> --
> 2.26.0
>