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| author | Sean Christopherson <seanjc@google.com> | 2021-06-15 19:29:05 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-17 20:10:18 +0300 |
| commit | ade74e1433f32e3fb422e3700d5bab34c57f4f47 (patch) | |
| tree | fb2e7e65696e9caf750343dff169838bba53a0f4 /virt | |
| parent | bca66dbcd28a41c669921ff7ca066f71e6f3e72e (diff) | |
| download | linux-ade74e1433f32e3fb422e3700d5bab34c57f4f47.tar.xz | |
KVM: x86/mmu: Grab nx_lpage_splits as an unsigned long before division
Snapshot kvm->stats.nx_lpage_splits into a local unsigned long to avoid
64-bit division on 32-bit kernels. Casting to an unsigned long is safe
because the maximum number of shadow pages, n_max_mmu_pages, is also an
unsigned long, i.e. KVM will start recycling shadow pages before the
number of splits can exceed a 32-bit value.
ERROR: modpost: "__udivdi3" [arch/x86/kvm/kvm.ko] undefined!
Fixes: 7ee093d4f3f5 ("KVM: switch per-VM stats to u64")
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210615162905.2132937-1-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions