lkml.org 
[lkml]   [2021]   [Apr]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [RFC PATCH 2/6] x86/kvm: Add a struct and constants for virtual suspend time injection
From
Date
On Monday, 2021-04-26 at 18:06:41 +09, Hikaru Nishida wrote:

> This patch adds definitions that are needed by both host and guest

s/This patch adds/Add/

> to implement virtual suspend time injection.
> This patch also adds #include <linux/kvm_host.h> in

s/This patch also adds/Also add/

> kernel/time/timekeeping.c to make necesarily functions which will be

s/necesarily/necessary/

> introduced in later patches available.
>
> Signed-off-by: Hikaru Nishida <hikalium@chromium.org>
> ---
>
> arch/x86/include/uapi/asm/kvm_para.h | 6 ++++++
> kernel/time/timekeeping.c | 1 +
> 2 files changed, 7 insertions(+)
>
> diff --git a/arch/x86/include/uapi/asm/kvm_para.h b/arch/x86/include/uapi/asm/kvm_para.h
> index 950afebfba88..13788b01094f 100644
> --- a/arch/x86/include/uapi/asm/kvm_para.h
> +++ b/arch/x86/include/uapi/asm/kvm_para.h
> @@ -33,6 +33,7 @@
> #define KVM_FEATURE_PV_SCHED_YIELD 13
> #define KVM_FEATURE_ASYNC_PF_INT 14
> #define KVM_FEATURE_MSI_EXT_DEST_ID 15
> +#define KVM_FEATURE_HOST_SUSPEND_TIME 16
>
> #define KVM_HINTS_REALTIME 0
>
> @@ -54,6 +55,7 @@
> #define MSR_KVM_POLL_CONTROL 0x4b564d05
> #define MSR_KVM_ASYNC_PF_INT 0x4b564d06
> #define MSR_KVM_ASYNC_PF_ACK 0x4b564d07
> +#define MSR_KVM_HOST_SUSPEND_TIME 0x4b564d08
>
> struct kvm_steal_time {
> __u64 steal;
> @@ -64,6 +66,10 @@ struct kvm_steal_time {
> __u32 pad[11];
> };
>
> +struct kvm_host_suspend_time {
> + __u64 suspend_time_ns;
> +};
> +
> #define KVM_VCPU_PREEMPTED (1 << 0)
> #define KVM_VCPU_FLUSH_TLB (1 << 1)
>
> diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
> index 6aee5768c86f..ff0304de7de9 100644
> --- a/kernel/time/timekeeping.c
> +++ b/kernel/time/timekeeping.c
> @@ -22,6 +22,7 @@
> #include <linux/pvclock_gtod.h>
> #include <linux/compiler.h>
> #include <linux/audit.h>
> +#include <linux/kvm_host.h>
>
> #include "tick-internal.h"
> #include "ntp_internal.h"
> --
> 2.31.1.498.g6c1eba8ee3d-goog

dme.
--
Too much information, running through my brain.

\
 
 \ /
  Last update: 2021-04-27 17:15    [W:0.121 / U:0.784 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site