diff options
| author | Sean Christopherson <seanjc@google.com> | 2022-10-13 23:12:32 +0200 |
|---|---|---|
| committer | David Woodhouse <dwmw@amazon.co.uk> | 2022-11-30 20:25:24 +0100 |
| commit | 06e155c44aa0e7921aa44d3c67f8ea464b16cb75 (patch) | |
| tree | dd1ffca57936fce3629522cf5d39948b8e71a583 /virt | |
| parent | KVM: Drop @gpa from exported gfn=>pfn cache check() and refresh() helpers (diff) | |
| download | linux-06e155c44aa0e7921aa44d3c67f8ea464b16cb75.tar.xz linux-06e155c44aa0e7921aa44d3c67f8ea464b16cb75.zip | |
KVM: Skip unnecessary "unmap" if gpc is already valid during refresh
When refreshing a gfn=>pfn cache, skip straight to unlocking if the cache
already valid instead of stuffing the "old" variables to turn the
unmapping outro into a nop.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/pfncache.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/virt/kvm/pfncache.c b/virt/kvm/pfncache.c index a805cc1544bf..2d6aba677830 100644 --- a/virt/kvm/pfncache.c +++ b/virt/kvm/pfncache.c @@ -301,9 +301,8 @@ static int __kvm_gpc_refresh(struct gfn_to_pfn_cache *gpc, gpa_t gpa, * may have changed. */ gpc->khva = old_khva + page_offset; - old_pfn = KVM_PFN_ERR_FAULT; - old_khva = NULL; ret = 0; + goto out_unlock; } out: |