Rafael Mendonca <rafaelmendsr@xxxxxxxxx> writes:
> Presumably, this was introduced due to a conflict resolution with
> commit ef68017eb570 ("x86/kvm: Handle async page faults directly through
> do_page_fault()"), given that the last posted version [1] of the blamed
> commit was not based on the aforementioned commit.
>
> [1] https://lore.kernel.org/kvm/20200525144125.143875-9-vkuznets@xxxxxxxxxx/
>
> Fixes: b1d405751cd5 ("KVM: x86: Switch KVM guest to using interrupts for page ready APF delivery")
Indeed, this looks like a mid-air collision happened upon commit/merge.
> Signed-off-by: Rafael Mendonca <rafaelmendsr@xxxxxxxxx>
> ---
> arch/x86/kernel/kvm.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
> index d4e48b4a438b..cf886f86038a 100644
> --- a/arch/x86/kernel/kvm.c
> +++ b/arch/x86/kernel/kvm.c
> @@ -349,7 +349,7 @@ static notrace void kvm_guest_apic_eoi_write(u32 reg, u32 val)
> static void kvm_guest_cpu_init(void)
> {
> if (kvm_para_has_feature(KVM_FEATURE_ASYNC_PF_INT) && kvmapf) {
> - u64 pa = slow_virt_to_phys(this_cpu_ptr(&apf_reason));
> + u64 pa;
>
> WARN_ON_ONCE(!static_branch_likely(&kvm_async_pf_enabled));
Reviewed-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
--
Vitaly
