Hi Michael:
Thanks for your review.
On 8/13/2021 3:14 AM, Michael Kelley wrote:
From: Tianyu Lan Sent: Monday, August 9, 2021 10:56 AM
Subject: [PATCH V3 01/13] x86/HV: Initialize GHCB page in Isolation VM
The subject line tag on patches under arch/x86/hyperv is generally
"x86/h
From: Tianyu Lan Sent: Monday, August 9, 2021 10:56 AM
> Subject: [PATCH V3 01/13] x86/HV: Initialize GHCB page in Isolation VM
The subject line tag on patches under arch/x86/hyperv is generally
"x86/hyperv:".
There's some variation in the spelling of "hyperv", bu
Hi Wei:
Thanks for review.
On 8/10/2021 6:56 PM, Wei Liu wrote:
On Mon, Aug 09, 2021 at 01:56:05PM -0400, Tianyu Lan wrote:
[...]
static int hv_cpu_init(unsigned int cpu)
{
union hv_vp_assist_msr_contents msr = { 0 };
@@ -85,6 +111,8 @@ static int hv_cpu_init(unsigned int
On Mon, Aug 09, 2021 at 01:56:05PM -0400, Tianyu Lan wrote:
[...]
> static int hv_cpu_init(unsigned int cpu)
> {
> union hv_vp_assist_msr_contents msr = { 0 };
> @@ -85,6 +111,8 @@ static int hv_cpu_init(unsigned int cpu)
> }
> }
>
> + hyperv_init_ghcb();
> +
Why
From: Tianyu Lan
Hyper-V exposes GHCB page via SEV ES GHCB MSR for SNP guest
to communicate with hypervisor. Map GHCB page for all
cpus to read/write MSR register and submit hvcall request
via GHCB.
Signed-off-by: Tianyu Lan
---
arch/x86/hyperv/hv_init.c | 66
