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| author | Ackerley Tng <ackerleytng@google.com> | 2024-08-01 20:39:55 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2024-08-01 21:13:11 +0300 |
| commit | aca0ec970d7644954caf01a40c5538d4400c01bd (patch) | |
| tree | 974ec018c6b51a06772aeb8a6b669b7bfce0bc13 /arch | |
| parent | 66a644c09fbed0a19f3708895c1180df78181019 (diff) | |
| download | linux-aca0ec970d7644954caf01a40c5538d4400c01bd.tar.xz | |
KVM: x86/mmu: fix determination of max NPT mapping level for private pages
The `if (req_max_level)` test was meant ignore req_max_level if
PG_LEVEL_NONE was returned. Hence, this function should return
max_level instead of the ignored req_max_level.
This is only a latent issue for now, since guest_memfd does not
support large pages.
Signed-off-by: Ackerley Tng <ackerleytng@google.com>
Message-ID: <20240801173955.1975034-1-ackerleytng@google.com>
Fixes: f32fb32820b1 ("KVM: x86: Add hook for determining max NPT mapping level")
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/mmu/mmu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 43a02891babb..928cf84778b0 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -4335,7 +4335,7 @@ static u8 kvm_max_private_mapping_level(struct kvm *kvm, kvm_pfn_t pfn, if (req_max_level) max_level = min(max_level, req_max_level); - return req_max_level; + return max_level; } static int kvm_faultin_pfn_private(struct kvm_vcpu *vcpu, |