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Re: [PATCH V3 01/13] x86/HV: Initialize GHCB page in Isolation VM
- To: Tianyu Lan <ltykernel@xxxxxxxxx>
- From: Wei Liu <wei.liu@xxxxxxxxxx>
- Date: Tue, 10 Aug 2021 10:56:09 +0000
- Cc: kys@xxxxxxxxxxxxx, haiyangz@xxxxxxxxxxxxx, sthemmin@xxxxxxxxxxxxx, wei.liu@xxxxxxxxxx, decui@xxxxxxxxxxxxx, tglx@xxxxxxxxxxxxx, mingo@xxxxxxxxxx, bp@xxxxxxxxx, x86@xxxxxxxxxx, hpa@xxxxxxxxx, dave.hansen@xxxxxxxxxxxxxxx, luto@xxxxxxxxxx, peterz@xxxxxxxxxxxxx, konrad.wilk@xxxxxxxxxx, boris.ostrovsky@xxxxxxxxxx, jgross@xxxxxxxx, sstabellini@xxxxxxxxxx, joro@xxxxxxxxxx, will@xxxxxxxxxx, davem@xxxxxxxxxxxxx, kuba@xxxxxxxxxx, jejb@xxxxxxxxxxxxx, martin.petersen@xxxxxxxxxx, arnd@xxxxxxxx, hch@xxxxxx, m.szyprowski@xxxxxxxxxxx, robin.murphy@xxxxxxx, thomas.lendacky@xxxxxxx, brijesh.singh@xxxxxxx, ardb@xxxxxxxxxx, Tianyu.Lan@xxxxxxxxxxxxx, pgonda@xxxxxxxxxx, martin.b.radev@xxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, kirill.shutemov@xxxxxxxxxxxxxxx, rppt@xxxxxxxxxx, sfr@xxxxxxxxxxxxxxxx, saravanand@xxxxxx, krish.sadhukhan@xxxxxxxxxx, aneesh.kumar@xxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, rientjes@xxxxxxxxxx, hannes@xxxxxxxxxxx, tj@xxxxxxxxxx, michael.h.kelley@xxxxxxxxxxxxx, iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, linux-hyperv@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, vkuznets@xxxxxxxxxx, parri.andrea@xxxxxxxxx, dave.hansen@xxxxxxxxx
- Delivery-date: Tue, 10 Aug 2021 10:56:21 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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 is the return value not checked here? If that's not required, can
you leave a comment?
Wei.
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