[PATCH] Documentation: virtual: kvm: correct one bit description in APF case

[PATCH] Documentation: virtual: kvm: correct one bit description in APF case

[Tiejun Chen]

When commit 6adba5274206 (KVM: Let host know whether the guest can
handle async PF in non-userspace context.) is introduced, actually
bit 2 still is reserved and should be zero. Instead, bit 1 is 1 to
indicate if asynchronous page faults can be injected when vcpu is
in cpl == 0, and also please see this,

in the file kvm_para.h, #define KVM_ASYNC_PF_SEND_ALWAYS (1 << 1).

Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
---
 Documentation/virtual/kvm/msr.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/virtual/kvm/msr.txt b/Documentation/virtual/kvm/msr.txt
index 6d470ae..2a71c8f 100644
--- a/Documentation/virtual/kvm/msr.txt
+++ b/Documentation/virtual/kvm/msr.txt
@@ -168,7 +168,7 @@ MSR_KVM_ASYNC_PF_EN: 0x4b564d02
 	64 byte memory area which must be in guest RAM and must be
 	zeroed. Bits 5-2 are reserved and should be zero. Bit 0 is 1
 	when asynchronous page faults are enabled on the vcpu 0 when
-	disabled. Bit 2 is 1 if asynchronous page faults can be injected
+	disabled. Bit 1 is 1 if asynchronous page faults can be injected
 	when vcpu is in cpl == 0.
 
 	First 4 byte of 64 byte memory location will be written to by
-- 
1.9.1

Re: [PATCH] Documentation: virtual: kvm: correct one bit description in APF case

[Paolo Bonzini]

Il 11/10/2014 03:19, Tiejun Chen ha scritto:
> When commit 6adba5274206 (KVM: Let host know whether the guest can
> handle async PF in non-userspace context.) is introduced, actually
> bit 2 still is reserved and should be zero. Instead, bit 1 is 1 to
> indicate if asynchronous page faults can be injected when vcpu is
> in cpl == 0, and also please see this,
> 
> in the file kvm_para.h, #define KVM_ASYNC_PF_SEND_ALWAYS (1 << 1).
> 
> Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
> ---
>  Documentation/virtual/kvm/msr.txt | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/Documentation/virtual/kvm/msr.txt b/Documentation/virtual/kvm/msr.txt
> index 6d470ae..2a71c8f 100644
> --- a/Documentation/virtual/kvm/msr.txt
> +++ b/Documentation/virtual/kvm/msr.txt
> @@ -168,7 +168,7 @@ MSR_KVM_ASYNC_PF_EN: 0x4b564d02
>  	64 byte memory area which must be in guest RAM and must be
>  	zeroed. Bits 5-2 are reserved and should be zero. Bit 0 is 1
>  	when asynchronous page faults are enabled on the vcpu 0 when
> -	disabled. Bit 2 is 1 if asynchronous page faults can be injected
> +	disabled. Bit 1 is 1 if asynchronous page faults can be injected
>  	when vcpu is in cpl == 0.
>  
>  	First 4 byte of 64 byte memory location will be written to by
> 

Thanks, applying locally.

Paolo