From: Borislav Petkov <bp@alien8•de>
To: Tianyu Lan <ltykernel@gmail•com>
Cc: kys@microsoft•com, haiyangz@microsoft•com,
sthemmin@microsoft•com, wei.liu@kernel•org, decui@microsoft•com,
tglx@linutronix•de, mingo@redhat•com,
dave.hansen@linux•intel.com, x86@kernel•org, hpa@zytor•com,
davem@davemloft•net, kuba@kernel•org, jejb@linux•ibm.com,
martin.petersen@oracle•com, arnd@arndb•de, hch@infradead•org,
m.szyprowski@samsung•com, robin.murphy@arm•com,
thomas.lendacky@amd•com, Tianyu.Lan@microsoft•com,
michael.h.kelley@microsoft•com, iommu@lists•linux-foundation.org,
linux-arch@vger•kernel.org, linux-hyperv@vger•kernel.org,
linux-kernel@vger•kernel.org, linux-scsi@vger•kernel.org,
netdev@vger•kernel.org, vkuznets@redhat•com,
brijesh.singh@amd•com, konrad.wilk@oracle•com, hch@lst•de,
joro@8bytes•org, parri.andrea@gmail•com, dave.hansen@intel•com
Subject: Re: [PATCH V7 2/5] x86/hyper-v: Add hyperv Isolation VM check in the cc_platform_has()
Date: Tue, 14 Dec 2021 17:05:01 +0100 [thread overview]
Message-ID: <YbjArUL+biZMsFOL@zn.tnic> (raw)
In-Reply-To: <20211213071407.314309-3-ltykernel@gmail.com>
On Mon, Dec 13, 2021 at 02:14:03AM -0500, Tianyu Lan wrote:
> From: Tianyu Lan <Tianyu.Lan@microsoft•com>
>
> 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".
> 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 <bp@suse•de>
Thx.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2021-12-14 16:05 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-13 7:14 [PATCH V7 0/5] x86/Hyper-V: Add Hyper-V Isolation VM support(Second part) Tianyu Lan
2021-12-13 7:14 ` [PATCH V7 1/5] swiotlb: Add swiotlb bounce buffer remap function for HV IVM Tianyu Lan
2021-12-13 16:45 ` Dave Hansen
2021-12-14 4:36 ` Tianyu Lan
2021-12-14 18:40 ` Dave Hansen
2021-12-14 22:23 ` Tom Lendacky
2021-12-14 22:40 ` Dave Hansen
2021-12-15 5:00 ` Tianyu Lan
2021-12-16 11:05 ` Wei Liu
2021-12-13 7:14 ` [PATCH V7 2/5] x86/hyper-v: Add hyperv Isolation VM check in the cc_platform_has() Tianyu Lan
2021-12-14 15:33 ` Wei Liu
2021-12-14 16:05 ` Borislav Petkov [this message]
2021-12-14 16:10 ` Wei Liu
2021-12-13 7:14 ` [PATCH V7 3/5] hyper-v: Enable swiotlb bounce buffer for Isolation VM Tianyu Lan
2021-12-13 7:14 ` [PATCH V7 4/5] scsi: storvsc: Add Isolation VM support for storvsc driver Tianyu Lan
2021-12-15 19:19 ` Long Li
2022-02-03 23:53 ` Jakub Kicinski
2022-02-04 2:55 ` Jakub Kicinski
2021-12-13 7:14 ` [PATCH V7 5/5] net: netvsc: Add Isolation VM support for netvsc driver Tianyu Lan
2021-12-13 16:56 ` Haiyang Zhang
2021-12-14 18:35 ` [PATCH V7 0/5] x86/Hyper-V: Add Hyper-V Isolation VM support(Second part) Michael Kelley (LINUX)
2021-12-17 18:02 ` Wei Liu
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