diff mbox series

x86/kvm: Remove unused virt to phys translation in kvm_guest_cpu_init()

Message ID 20221021020113.922027-1-rafaelmendsr@gmail.com
State New
Headers
Series x86/kvm: Remove unused virt to phys translation in kvm_guest_cpu_init() |

Commit Message

Rafael Mendonca Oct. 21, 2022, 2:01 a.m. UTC 
  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@redhat.com/

Fixes: b1d405751cd5 ("KVM: x86: Switch KVM guest to using interrupts for page ready APF delivery")
Signed-off-by: Rafael Mendonca <rafaelmendsr@gmail.com>
---
 arch/x86/kernel/kvm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Vitaly Kuznetsov Oct. 21, 2022, 11:32 a.m. UTC | #1 
Rafael Mendonca <rafaelmendsr@gmail.com> 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@redhat.com/
>
> 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@gmail.com>
> ---
>  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@redhat.com>
Paolo Bonzini Oct. 22, 2022, 9:13 a.m. UTC | #2 
Queued, thanks.

Paolo
diff mbox series

Patch

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));