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From: Brijesh Singh <brijesh.singh@amd.com>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
	Borislav Petkov <bp@alien8.de>, Andy Lutomirski <luto@kernel.org>,
	Sean Christopherson <seanjc@google.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Joerg Roedel <jroedel@suse.de>, Ard Biesheuvel <ardb@kernel.org>
Cc: brijesh.singh@amd.com, Andi Kleen <ak@linux.intel.com>,
	Kuppuswamy Sathyanarayanan
	<sathyanarayanan.kuppuswamy@linux.intel.com>,
	David Rientjes <rientjes@google.com>,
	Vlastimil Babka <vbabka@suse.cz>,
	Tom Lendacky <thomas.lendacky@amd.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Peter Zijlstra <peterz@infradead.org>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Ingo Molnar <mingo@redhat.com>,
	Varad Gautam <varad.gautam@suse.com>,
	Dario Faggioli <dfaggioli@suse.com>,
	x86@kernel.org, linux-mm@kvack.org, linux-coco@lists.linux.dev,
	linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCHv2 0/7] Implement support for unaccepted memory
Date: Tue, 18 Jan 2022 15:05:34 -0600	[thread overview]
Message-ID: <05067267-494d-beb6-a935-9f39f5c120ae@amd.com> (raw)
In-Reply-To: <20220111113314.27173-1-kirill.shutemov@linux.intel.com>

Hi Kirill,

...

> 
> The approach lowers boot time substantially. Boot to shell is ~2.5x
> faster for 4G TDX VM and ~4x faster for 64G.
> 
> Patches 1-6/7 are generic and don't have any dependencies on TDX. They
> should serve AMD SEV needs as well. TDX-specific code isolated in the
> last patch. This patch requires the core TDX patchset which is currently
> under review.
> 

I can confirm that this series works for the SEV-SNP guest. I was able 
to hook the SEV-SNP page validation vmgexit (similar to the TDX patch#7) 
and have verified that the guest kernel successfully accepted all the 
memory regions marked unaccepted by the EFI boot loader.
Not a big deal, but can I ask you to include me in Cc on the future 
series; I should be able to do more testing on SNP hardware and provide 
my Test-by tag.

~ Brijesh

      parent reply	other threads:[~2022-01-18 21:05 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-11 11:33 [PATCHv2 0/7] Implement support for unaccepted memory Kirill A. Shutemov
2022-01-11 11:33 ` [PATCHv2 1/7] mm: Add " Kirill A. Shutemov
2022-01-11 19:46   ` Dave Hansen
2022-01-12 11:31     ` David Hildenbrand
2022-01-12 19:15       ` Kirill A. Shutemov
2022-01-14 13:22         ` David Hildenbrand
2022-01-12 18:30     ` Kirill A. Shutemov
2022-01-12 18:40       ` Dave Hansen
2022-01-13  7:42         ` Mike Rapoport
2022-01-11 11:33 ` [PATCHv2 2/7] efi/x86: Get full memory map in allocate_e820() Kirill A. Shutemov
2022-01-11 11:33 ` [PATCHv2 3/7] efi/x86: Implement support for unaccepted memory Kirill A. Shutemov
2022-01-11 17:17   ` Dave Hansen
2022-01-12 19:29     ` Kirill A. Shutemov
2022-01-12 19:35       ` Dave Hansen
2022-01-11 11:33 ` [PATCHv2 4/7] x86/boot/compressed: Handle " Kirill A. Shutemov
2022-01-11 11:33 ` [PATCHv2 5/7] x86/mm: Reserve unaccepted memory bitmap Kirill A. Shutemov
2022-01-11 19:10   ` Dave Hansen
2022-01-12 19:43     ` Kirill A. Shutemov
2022-01-12 19:53       ` Dave Hansen
2022-01-15 18:46         ` Mike Rapoport
2022-01-11 11:33 ` [PATCHv2 6/7] x86/mm: Provide helpers for unaccepted memory Kirill A. Shutemov
2022-01-11 20:01   ` Dave Hansen
2022-01-12 19:43     ` Kirill A. Shutemov
2022-01-11 11:33 ` [PATCHv2 7/7] x86/tdx: Unaccepted memory support Kirill A. Shutemov
2022-01-18 21:05 ` Brijesh Singh [this message]

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