From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Theodore Ts'o <tytso@mit.edu>, Ingo Molnar <mingo@kernel.org>,
Kiryl Shutsemau <kas@kernel.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Pradipta Banerjee <prbanerj@redhat.com>,
Frank Liang <xiliang@redhat.com>,
Alexander Graf <graf@amazon.com>
Subject: Re: [PATCH] vmgenid: Remap memory as decrypted
Date: Mon, 22 Dec 2025 16:18:20 +0100 [thread overview]
Message-ID: <87jyye35qb.fsf@redhat.com> (raw)
In-Reply-To: <CAHmME9o1oJXjt4=5qqGDdBbiK75dvea_e=Z4ceStmk=Z5AYgjQ@mail.gmail.com>
"Jason A. Donenfeld" <Jason@zx2c4.com> writes:
> Hi Vitaly,
>
> On Mon, Dec 22, 2025 at 3:46 PM Vitaly Kuznetsov <vkuznets@redhat.com> wrote:
>> - virt_addr = devm_memremap(&device->dev, phys_addr, VMGENID_SIZE, MEMREMAP_WB);
>> + virt_addr = devm_memremap(&device->dev, phys_addr, VMGENID_SIZE,
>> + MEMREMAP_WB | MEMREMAP_DEC);
>
> Thanks for this patch. I still need to do a bit of my own testing with
> it, but I've preliminarily applied it to the random.git tree:
> https://git.kernel.org/pub/scm/linux/kernel/git/crng/random.git/commit/?id=9476583268980ce64ed75f124768fe3bff6fff4c
>
> Should this patch CC stable@, by the way?
>
I'm not sure how common the configuration (SEV-SNP/(TDX?) + vmgenid) is
but I guess AWS SEV-SNP config is significant enough to justify stable@
as all kernels 6.15+ don't boot there at all.
--
Vitaly
next prev parent reply other threads:[~2025-12-22 15:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-22 14:46 Vitaly Kuznetsov
2025-12-22 14:53 ` Jason A. Donenfeld
2025-12-22 15:18 ` Vitaly Kuznetsov [this message]
2025-12-22 15:19 ` Jason A. Donenfeld
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