Re: [PATCH V7 2/5] x86/hyper-v: Add hyperv Isolation VM check in the cc_platform_has()

On Tue, Dec 14, 2021 at 05:05:01PM +0100, Borislav Petkov wrote:

On Mon, Dec 13, 2021 at 02:14:03AM -0500, Tianyu Lan wrote:

quoted

From: Tianyu Lan <redacted>

Hyper-V provides Isolation VM for confidential computing support and
guest memory is encrypted in it. Places checking cc_platform_has()
with GUEST_MEM_ENCRYPT attr should return "True" in Isolation vm. e.g,

Stick to a single spelling variant: "VM".

quoted

swiotlb bounce buffer size needs to adjust according to memory size
in the sev_setup_arch().

So basically you wanna simply say here:

"Hyper-V Isolation VMs need to adjust the SWIOTLB size just like SEV
guests. Add a hyperv_cc_platform_has() variant which enables that."

?

With that addressed you can have my

Acked-by: Borislav Petkov <redacted>

Thanks. I can address your comments when I pick up this series.

Wei.

Thx.

-- 
Regards/Gruss,
    Boris.

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