[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Wed, 7 Jul 2021 09:14:28 -0700
From: Dave Hansen <dave.hansen@...el.com>
To: Tianyu Lan <ltykernel@...il.com>, kys@...rosoft.com,
haiyangz@...rosoft.com, sthemmin@...rosoft.com, wei.liu@...nel.org,
decui@...rosoft.com, tglx@...utronix.de, mingo@...hat.com,
bp@...en8.de, x86@...nel.org, hpa@...or.com,
dave.hansen@...ux.intel.com, luto@...nel.org, peterz@...radead.org,
konrad.wilk@...cle.com, boris.ostrovsky@...cle.com,
jgross@...e.com, sstabellini@...nel.org, joro@...tes.org,
will@...nel.org, davem@...emloft.net, kuba@...nel.org,
jejb@...ux.ibm.com, martin.petersen@...cle.com, arnd@...db.de,
hch@....de, m.szyprowski@...sung.com, robin.murphy@....com,
kirill.shutemov@...ux.intel.com, akpm@...ux-foundation.org,
rppt@...nel.org, Tianyu.Lan@...rosoft.com, thomas.lendacky@....com,
ardb@...nel.org, robh@...nel.org, nramas@...ux.microsoft.com,
pgonda@...gle.com, martin.b.radev@...il.com, david@...hat.com,
krish.sadhukhan@...cle.com, saravanand@...com,
xen-devel@...ts.xenproject.org, keescook@...omium.org,
rientjes@...gle.com, hannes@...xchg.org,
michael.h.kelley@...rosoft.com
Cc: iommu@...ts.linux-foundation.org, linux-arch@...r.kernel.org,
linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-scsi@...r.kernel.org, netdev@...r.kernel.org,
vkuznets@...hat.com, brijesh.singh@....com, anparri@...rosoft.com
Subject: Re: [Resend RFC PATCH V4 13/13] x86/HV: Not set memory
decrypted/encrypted during kexec alloc/free page in IVM
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/
Powered by blists - more mailing lists