From: Tianyu Lan <ltykernel@gmail.com>
To: Dave Hansen <dave.hansen@intel.com>,
kys@microsoft.com, haiyangz@microsoft.com,
sthemmin@microsoft.com, wei.liu@kernel.org, decui@microsoft.com,
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Cc: iommu@lists.linux-foundation.org, linux-arch@vger.kernel.org,
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Subject: Re: [Resend RFC PATCH V4 13/13] x86/HV: Not set memory decrypted/encrypted during kexec alloc/free page in IVM
Date: Thu, 8 Jul 2021 21:54:15 +0800 [thread overview]
Message-ID: <e4508d82-826e-86be-96cf-feecc1b4a260@gmail.com> (raw)
In-Reply-To: <3b5a1bd0-369a-2723-97c1-4ab4edb14eda@intel.com>
Hi Dave:
Thanks for your review.
On 7/8/2021 12:14 AM, Dave Hansen wrote:
> On 7/7/21 8:46 AM, Tianyu Lan wrote:
>> @@ -598,7 +599,7 @@ void arch_kexec_unprotect_crashkres(void)
>> */
>> int arch_kexec_post_alloc_pages(void *vaddr, unsigned int pages, gfp_t gfp)
>> {
>> - if (sev_active())
>> + if (sev_active() || hv_is_isolation_supported())
>> return 0;
>>
>> /*
>> @@ -611,7 +612,7 @@ int arch_kexec_post_alloc_pages(void *vaddr, unsigned int pages, gfp_t gfp)
>>
>> void arch_kexec_pre_free_pages(void *vaddr, unsigned int pages)
>> {
>> - if (sev_active())
>> + if (sev_active() || hv_is_isolation_supported())
>> return;
>
> You might want to take a look through the "protected guest" patches. I
> think this series is touching a few of the same locations that TDX and
> recent SEV work touch.
>
> https://lore.kernel.org/lkml/20210618225755.662725-5-sathyanarayanan.kuppuswamy@linux.intel.com/
Thanks for reminder. You are right. There will be a generic API to check
"proteced guest" type.
prev parent reply other threads:[~2021-07-08 13:54 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-07 15:46 [Resend RFC PATCH V4 00/13] x86/Hyper-V: Add Hyper-V Isolation VM support Tianyu Lan
2021-07-07 15:46 ` [Resend RFC PATCH V4 01/13] x86/HV: Initialize GHCB page in Isolation VM Tianyu Lan
2021-07-07 15:46 ` [Resend RFC PATCH V4 02/13] x86/HV: Initialize shared memory boundary in the " Tianyu Lan
2021-07-07 15:46 ` [Resend RFC PATCH V4 03/13] x86/HV: Add new hvcall guest address host visibility support Tianyu Lan
2021-07-07 15:46 ` [Resend RFC PATCH V4 04/13] HV: Mark vmbus ring buffer visible to host in Isolation VM Tianyu Lan
2021-07-07 15:46 ` [Resend RFC PATCH V4 05/13] HV: Add Write/Read MSR registers via ghcb page Tianyu Lan
2021-07-07 15:46 ` [Resend RFC PATCH V4 06/13] HV: Add ghcb hvcall support for SNP VM Tianyu Lan
2021-07-07 15:46 ` [Resend RFC PATCH V4 07/13] HV/Vmbus: Add SNP support for VMbus channel initiate message Tianyu Lan
2021-07-07 15:46 ` [Resend RFC PATCH V4 08/13] HV/Vmbus: Initialize VMbus ring buffer for Isolation VM Tianyu Lan
2021-07-07 15:46 ` [Resend RFC PATCH V4 09/13] x86/Swiotlb/HV: Add Swiotlb bounce buffer remap function for HV IVM Tianyu Lan
2021-07-20 10:42 ` Tianyu Lan
2021-07-20 13:54 ` Christoph Hellwig
2021-07-21 10:28 ` Tianyu Lan
2021-07-21 14:33 ` Christoph Hellwig
2021-07-21 15:11 ` Tianyu Lan
2021-08-13 16:43 ` Tianyu Lan
2021-07-07 15:46 ` [Resend RFC PATCH V4 10/13] HV/IOMMU: Enable swiotlb bounce buffer for Isolation VM Tianyu Lan
2021-07-07 15:46 ` [Resend RFC PATCH V4 11/13] HV/Netvsc: Add Isolation VM support for netvsc driver Tianyu Lan
2021-07-07 15:46 ` [Resend RFC PATCH V4 12/13] HV/Storvsc: Add Isolation VM support for storvsc driver Tianyu Lan
2021-07-07 15:46 ` [Resend RFC PATCH V4 13/13] x86/HV: Not set memory decrypted/encrypted during kexec alloc/free page in IVM Tianyu Lan
2021-07-07 16:14 ` Dave Hansen
2021-07-08 13:54 ` Tianyu Lan [this message]
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