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From: Borislav Petkov <bp@alien8.de>
To: Michael Roth <michael.roth@amd.com>
Cc: kvm@vger.kernel.org, linux-coco@lists.linux.dev,
	linux-mm@kvack.org, linux-crypto@vger.kernel.org, x86@kernel.org,
	linux-kernel@vger.kernel.org, tglx@linutronix.de,
	mingo@redhat.com, jroedel@suse.de, thomas.lendacky@amd.com,
	hpa@zytor.com, ardb@kernel.org, pbonzini@redhat.com,
	seanjc@google.com, vkuznets@redhat.com, jmattson@google.com,
	luto@kernel.org, dave.hansen@linux.intel.com, slp@redhat.com,
	pgonda@google.com, peterz@infradead.org,
	srinivas.pandruvada@linux.intel.com, rientjes@google.com,
	dovmurik@linux.ibm.com, tobin@ibm.com, vbabka@suse.cz,
	kirill@shutemov.name, ak@linux.intel.com, tony.luck@intel.com,
	marcorr@google.com, sathyanarayanan.kuppuswamy@linux.intel.com,
	alpergun@google.com, dgilbert@redhat.com, jarkko@kernel.org,
	ashish.kalra@amd.com, nikunj.dadhania@amd.com,
	liam.merwick@oracle.com, zhi.a.wang@intel.com
Subject: Re: [PATCH RFC v9 02/51] KVM: x86: Add gmem hook for invalidating private memory
Date: Mon, 12 Jun 2023 12:49:05 +0200	[thread overview]
Message-ID: <20230612104905.GOZIb4ISN9gj9lWYNv@fat_crate.local> (raw)
In-Reply-To: <20230612042559.375660-3-michael.roth@amd.com>

On Sun, Jun 11, 2023 at 11:25:10PM -0500, Michael Roth wrote:
> TODO: add a CONFIG option that can be to completely skip arch
> invalidation loop and avoid __weak references for arch/platforms that
> don't need an additional invalidation hook.
> 
> In some cases, like with SEV-SNP, guest memory needs to be updated in a
> platform-specific manner before it can be safely freed back to the host.
> Add hooks to wire up handling of this sort when freeing memory in
> response to FALLOC_FL_PUNCH_HOLE operations.
> 
> Also issue invalidations of all allocated pages when releasing the gmem
> file so that the pages are not left in an unusable state when they get
> freed back to the host.
> 
> Signed-off-by: Michael Roth <michael.roth@amd.com>
> ---
>  arch/x86/include/asm/kvm-x86-ops.h |  1 +
>  arch/x86/include/asm/kvm_host.h    |  1 +
>  arch/x86/kvm/x86.c                 |  6 ++++
>  include/linux/kvm_host.h           |  3 ++
>  virt/kvm/guest_mem.c               | 48 ++++++++++++++++++++++++++++--
>  5 files changed, 57 insertions(+), 2 deletions(-)

ld: arch/x86/kvm/../../../virt/kvm/eventfd.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/../../../virt/kvm/binary_stats.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/arch/x86/kvm/../../../virt/kvm/binary_stats.c:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/../../../virt/kvm/vfio.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/../../../virt/kvm/coalesced_mmio.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/../../../virt/kvm/async_pf.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/../../../virt/kvm/irqchip.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/../../../virt/kvm/dirty_ring.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/../../../virt/kvm/pfncache.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/x86.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/emulate.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/i8259.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/irq.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/lapic.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/i8254.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/ioapic.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/irq_comm.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/cpuid.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/pmu.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/mtrr.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/hyperv.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/debugfs.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/mmu/mmu.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/mmu/page_track.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/mmu/spte.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/mmu/tdp_iter.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/arch/x86/kvm/mmu/tdp_iter.c:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/mmu/tdp_mmu.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
ld: arch/x86/kvm/smm.o: in function `kvm_arch_gmem_invalidate':
/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: multiple definition of `kvm_arch_gmem_invalidate'; arch/x86/kvm/../../../virt/kvm/kvm_main.o:/home/boris/kernel/2nd/linux/./include/linux/kvm_host.h:2356: first defined here
make[3]: *** [scripts/Makefile.build:452: arch/x86/kvm/kvm.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [scripts/Makefile.build:494: arch/x86/kvm] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [scripts/Makefile.build:494: arch/x86] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:2028: .] Error 2

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette

  reply	other threads:[~2023-06-12 11:02 UTC|newest]

Thread overview: 102+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-12  4:25 [PATCH RFC v9 00/51] Add AMD Secure Nested Paging (SEV-SNP) Hypervisor Support Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 01/51] KVM: x86: Add gmem hook for initializing private memory Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 02/51] KVM: x86: Add gmem hook for invalidating " Michael Roth
2023-06-12 10:49   ` Borislav Petkov [this message]
2023-06-19 13:39     ` Borislav Petkov
2023-06-12  4:25 ` [PATCH RFC v9 03/51] KVM: x86: Use full 64-bit error code for kvm_mmu_do_page_fault Michael Roth
2023-06-14 14:24   ` Isaku Yamahata
2023-06-12  4:25 ` [PATCH RFC v9 04/51] KVM: x86: Determine shared/private faults using a configurable mask Michael Roth
2023-06-14 16:47   ` Isaku Yamahata
2023-06-20 20:28     ` Michael Roth
2023-06-20 21:18       ` Isaku Yamahata
2023-06-21 23:00         ` Michael Roth
2023-06-22  8:01           ` Isaku Yamahata
2023-06-22  9:55           ` Huang, Kai
2023-06-22 15:32             ` Michael Roth
2023-06-22 22:31               ` Huang, Kai
2023-06-22 23:39                 ` Isaku Yamahata
2023-06-22 23:52                   ` Huang, Kai
2023-06-23 14:43                     ` Isaku Yamahata
2023-06-19 16:27   ` Borislav Petkov
2023-06-20 20:36     ` Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 05/51] x86/coco: move CONFIG_HAS_CC_PLATFORM check down into coco/Makefile Michael Roth
2023-06-12  7:07   ` Kirill A . Shutemov
2023-06-20 12:09   ` Borislav Petkov
2023-06-20 20:43     ` Michael Roth
2023-06-21  8:54       ` Borislav Petkov
2023-06-29 21:02         ` Michael Roth
2023-07-10  3:05   ` Sathyanarayanan Kuppuswamy
2023-07-10 13:11     ` Tom Lendacky
2023-06-12  4:25 ` [PATCH RFC v9 06/51] x86/cpufeatures: Add SEV-SNP CPU feature Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 07/51] x86/sev: Add the host SEV-SNP initialization support Michael Roth
2023-06-12 15:34   ` Dave Hansen
2023-06-21  9:15     ` Borislav Petkov
2023-06-21 14:31       ` Dave Hansen
2023-06-21 15:59         ` Borislav Petkov
2023-06-21  9:42   ` Borislav Petkov
2023-06-21 14:36     ` Tom Lendacky
2023-06-21 19:15     ` Kalra, Ashish
2023-08-09 13:03   ` Jeremi Piotrowski
2023-06-12  4:25 ` [PATCH RFC v9 08/51] x86/speculation: Do not enable Automatic IBRS if SEV SNP is enabled Michael Roth
2023-06-12 15:39   ` Dave Hansen
2023-07-18 22:34     ` Kim Phillips
2023-07-18 23:17       ` Dave Hansen
2023-07-20 19:11         ` Kim Phillips
2023-07-20 22:24           ` Dave Hansen
2023-07-21 16:56             ` Kim Phillips
2023-06-12  4:25 ` [PATCH RFC v9 09/51] x86/sev: Add RMP entry lookup helpers Michael Roth
2023-06-12 16:08   ` Dave Hansen
2023-06-30 21:57     ` Michael Roth
2023-06-30 22:29       ` Dave Hansen
2023-06-12  4:25 ` [PATCH RFC v9 10/51] x86/fault: Add helper for dumping RMP entries Michael Roth
2023-06-12 16:12   ` Dave Hansen
2023-06-12  4:25 ` [PATCH RFC v9 11/51] x86/traps: Define RMP violation #PF error code Michael Roth
2023-06-12 16:26   ` Dave Hansen
2023-06-12  4:25 ` [PATCH RFC v9 12/51] x86/fault: Report RMP page faults for kernel addresses Michael Roth
2023-06-12 16:30   ` Dave Hansen
2023-06-12  4:25 ` [PATCH RFC v9 13/51] x86/fault: Handle RMP page faults for user addresses Michael Roth
2023-06-12 16:40   ` Dave Hansen
2023-06-12  4:25 ` [PATCH RFC v9 14/51] x86/sev: Add helper functions for RMPUPDATE and PSMASH instruction Michael Roth
2023-06-12 17:00   ` Dave Hansen
2023-06-12  4:25 ` [PATCH RFC v9 15/51] x86/sev: Invalidate pages from the direct map when adding them to the RMP table Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 16/51] crypto: ccp: Define the SEV-SNP commands Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 17/51] crypto: ccp: Add support to initialize the AMD-SP for SEV-SNP Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 18/51] crypto: ccp: Provide API to issue SEV and SNP commands Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 19/51] x86/sev: Introduce snp leaked pages list Michael Roth
2023-08-09 12:46   ` Jeremi Piotrowski
2023-06-12  4:25 ` [PATCH RFC v9 20/51] crypto: ccp: Handle the legacy TMR allocation when SNP is enabled Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 21/51] crypto: ccp: Handle the legacy SEV command " Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 22/51] crypto: ccp: Add the SNP_PLATFORM_STATUS command Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 23/51] KVM: SEV: Select CONFIG_KVM_PROTECTED_VM when CONFIG_KVM_AMD_SEV=y Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 24/51] KVM: SVM: Add support to handle AP reset MSR protocol Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 25/51] KVM: SVM: Add GHCB handling for Hypervisor Feature Support requests Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 26/51] KVM: SVM: Make AVIC backing, VMSA and VMCB memory allocation SNP safe Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 27/51] KVM: SVM: Add initial SEV-SNP support Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 28/51] KVM: SVM: Add KVM_SNP_INIT command Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 29/51] KVM: SVM: Add KVM_SEV_SNP_LAUNCH_START command Michael Roth
2023-06-12 17:08   ` Peter Gonda
2023-06-12  4:25 ` [PATCH RFC v9 30/51] KVM: Add HVA range operator Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 31/51] KVM: Split out memory attribute xarray updates to helper function Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 32/51] KVM: SVM: Add KVM_SEV_SNP_LAUNCH_UPDATE command Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 33/51] KVM: SVM: Add KVM_SEV_SNP_LAUNCH_FINISH command Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 34/51] KVM: SVM: Add support to handle GHCB GPA register VMGEXIT Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 35/51] KVM: SVM: Add KVM_EXIT_VMGEXIT Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 36/51] KVM: SVM: Add support to handle MSR based Page State Change VMGEXIT Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 37/51] KVM: SVM: Add support to handle " Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 38/51] KVM: x86: Export the kvm_zap_gfn_range() for the SNP use Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 39/51] KVM: x86: Define RMP page fault error bits for #NPF Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 40/51] KVM: SVM: Add support to handle RMP nested page faults Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 41/51] KVM: SVM: Use a VMSA physical address variable for populating VMCB Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 42/51] KVM: SVM: Support SEV-SNP AP Creation NAE event Michael Roth
2023-08-15 16:00   ` Peter Gonda
2023-06-12  4:25 ` [PATCH RFC v9 43/51] KVM: SEV: Configure MMU to check for private fault flags Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 44/51] KVM: SEV: Implement gmem hook for initializing private pages Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 45/51] KVM: SEV: Implement gmem hook for invalidating " Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 46/51] KVM: SVM: Add module parameter to enable the SEV-SNP Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 47/51] iommu/amd: Add IOMMU_SNP_SHUTDOWN support Michael Roth
2023-09-07 10:31   ` Suthikulpanit, Suravee
2023-06-12  4:25 ` [PATCH RFC v9 48/51] crypto: ccp: Add the SNP_{SET,GET}_EXT_CONFIG command Michael Roth
2023-06-13  6:24   ` Alexey Kardashevskiy
2023-06-12  4:25 ` [PATCH RFC v9 49/51] x86/sev: Add KVM commands for per-instance certs Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 50/51] KVM: SVM: Provide support for SNP_GUEST_REQUEST NAE event Michael Roth
2023-06-12  4:25 ` [PATCH RFC v9 51/51] crypto: ccp: Add debug support for decrypting pages Michael Roth

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