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
WARNING: multiple messages have this Message-ID (diff)
From: Borislav Petkov <bp@alien8.de>
To: Tianyu Lan <ltykernel@gmail.com>
Cc: linux-hyperv@vger.kernel.org, brijesh.singh@amd.com,
dave.hansen@linux.intel.com, dave.hansen@intel.com,
hpa@zytor.com, kys@microsoft.com, hch@lst.de,
linux-arch@vger.kernel.org, hch@infradead.org,
wei.liu@kernel.org, sthemmin@microsoft.com,
linux-scsi@vger.kernel.org, x86@kernel.org, decui@microsoft.com,
michael.h.kelley@microsoft.com, mingo@redhat.com,
kuba@kernel.org, jejb@linux.ibm.com, parri.andrea@gmail.com,
thomas.lendacky@amd.com, Tianyu.Lan@microsoft.com, arnd@arndb.de,
konrad.wilk@oracle.com, haiyangz@microsoft.com,
tglx@linutronix.de, martin.petersen@oracle.com,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
iommu@lists.linux-foundation.org, vkuznets@redhat.com,
robin.murphy@arm.com, davem@davemloft.net
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
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2021-12-14 16:05 UTC|newest]
Thread overview: 44+ 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 ` 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 7:14 ` Tianyu Lan
2021-12-13 16:45 ` Dave Hansen
2021-12-13 16:45 ` Dave Hansen
2021-12-14 4:36 ` Tianyu Lan
2021-12-14 4:36 ` Tianyu Lan
2021-12-14 18:40 ` Dave Hansen
2021-12-14 18:40 ` Dave Hansen
2021-12-14 22:23 ` Tom Lendacky
2021-12-14 22:23 ` Tom Lendacky via iommu
2021-12-14 22:40 ` Dave Hansen
2021-12-14 22:40 ` Dave Hansen
2021-12-15 5:00 ` Tianyu Lan
2021-12-15 5:00 ` Tianyu Lan
2021-12-16 11:05 ` Wei Liu
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
2021-12-13 7:14 ` Tianyu Lan
2021-12-14 15:33 ` Wei Liu
2021-12-14 15:33 ` Wei Liu
2021-12-14 16:05 ` Borislav Petkov [this message]
2021-12-14 16:05 ` Borislav Petkov
2021-12-14 16:10 ` Wei Liu
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 ` Tianyu Lan
2021-12-13 7:14 ` [PATCH V7 4/5] scsi: storvsc: Add Isolation VM support for storvsc driver Tianyu Lan
2021-12-13 7:14 ` Tianyu Lan
2021-12-15 19:19 ` Long Li
2021-12-15 19:19 ` Long Li via iommu
2022-02-03 23:53 ` Jakub Kicinski
2022-02-03 23:53 ` Jakub Kicinski
2022-02-04 2:55 ` 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 7:14 ` Tianyu Lan
2021-12-13 16:56 ` Haiyang Zhang
2021-12-13 16:56 ` Haiyang Zhang via iommu
2021-12-14 18:35 ` [PATCH V7 0/5] x86/Hyper-V: Add Hyper-V Isolation VM support(Second part) Michael Kelley (LINUX)
2021-12-14 18:35 ` Michael Kelley (LINUX) via iommu
2021-12-17 18:02 ` Wei Liu
2021-12-17 18:02 ` Wei Liu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=YbjArUL+biZMsFOL@zn.tnic \
--to=bp@alien8.de \
--cc=Tianyu.Lan@microsoft.com \
--cc=arnd@arndb.de \
--cc=brijesh.singh@amd.com \
--cc=dave.hansen@intel.com \
--cc=dave.hansen@linux.intel.com \
--cc=davem@davemloft.net \
--cc=decui@microsoft.com \
--cc=haiyangz@microsoft.com \
--cc=hch@infradead.org \
--cc=hch@lst.de \
--cc=hpa@zytor.com \
--cc=iommu@lists.linux-foundation.org \
--cc=jejb@linux.ibm.com \
--cc=joro@8bytes.org \
--cc=konrad.wilk@oracle.com \
--cc=kuba@kernel.org \
--cc=kys@microsoft.com \
--cc=linux-arch@vger.kernel.org \
--cc=linux-hyperv@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=ltykernel@gmail.com \
--cc=m.szyprowski@samsung.com \
--cc=martin.petersen@oracle.com \
--cc=michael.h.kelley@microsoft.com \
--cc=mingo@redhat.com \
--cc=netdev@vger.kernel.org \
--cc=parri.andrea@gmail.com \
--cc=robin.murphy@arm.com \
--cc=sthemmin@microsoft.com \
--cc=tglx@linutronix.de \
--cc=thomas.lendacky@amd.com \
--cc=vkuznets@redhat.com \
--cc=wei.liu@kernel.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.