From: kirill.shutemov@linux.intel.com
To: mhklinux@outlook.com
Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com,
haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com,
luto@kernel.org, peterz@infradead.org, akpm@linux-foundation.org,
urezki@gmail.com, hch@infradead.org, lstoakes@gmail.com,
thomas.lendacky@amd.com, ardb@kernel.org, jroedel@suse.de,
seanjc@google.com, rick.p.edgecombe@intel.com,
sathyanarayanan.kuppuswamy@linux.intel.com,
linux-kernel@vger.kernel.org, linux-coco@lists.linux.dev,
linux-hyperv@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH v4 1/3] x86/hyperv: Use slow_virt_to_phys() in page transition hypervisor callback
Date: Wed, 17 Jan 2024 16:37:27 +0300 [thread overview]
Message-ID: <20240117133727.3zzwifnunmgklotw@box.shutemov.name> (raw)
In-Reply-To: <20240116022008.1023398-2-mhklinux@outlook.com>
On Mon, Jan 15, 2024 at 06:20:06PM -0800, mhkelley58@gmail.com wrote:
> From: Michael Kelley <mhklinux@outlook.com>
>
> In preparation for temporarily marking pages not present during a
> transition between encrypted and decrypted, use slow_virt_to_phys()
> in the hypervisor callback. As long as the PFN is correct,
> slow_virt_to_phys() works even if the leaf PTE is not present.
> The existing functions that depend on vmalloc_to_page() all
> require that the leaf PTE be marked present, so they don't work.
>
> Update the comments for slow_virt_to_phys() to note this broader usage
> and the requirement to work even if the PTE is not marked present.
>
> Signed-off-by: Michael Kelley <mhklinux@outlook.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
--
Kiryl Shutsemau / Kirill A. Shutemov
next prev parent reply other threads:[~2024-01-17 13:37 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-16 2:20 [PATCH v4 0/3] x86/hyperv: Mark CoCo VM pages not present when changing encrypted state mhkelley58
2024-01-16 2:20 ` [PATCH v4 1/3] x86/hyperv: Use slow_virt_to_phys() in page transition hypervisor callback mhkelley58
2024-01-16 14:58 ` Edgecombe, Rick P
2024-01-16 17:02 ` rick.p.edgecombe
2024-01-17 13:37 ` kirill.shutemov [this message]
2024-01-16 2:20 ` [PATCH v4 2/3] x86/mm: Regularize set_memory_p() parameters and make non-static mhkelley58
2024-01-16 2:20 ` [PATCH v4 3/3] x86/hyperv: Make encrypted/decrypted changes safe for load_unaligned_zeropad() mhkelley58
2024-01-16 14:59 ` [PATCH v4 0/3] x86/hyperv: Mark CoCo VM pages not present when changing encrypted state Edgecombe, Rick P
2024-01-16 17:10 ` Rick Edgecombe
2024-02-09 15:51 ` Michael Kelley
2024-03-01 9:26 ` Wei Liu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240117133727.3zzwifnunmgklotw@box.shutemov.name \
--to=kirill.shutemov@linux.intel.com \
--cc=akpm@linux-foundation.org \
--cc=ardb@kernel.org \
--cc=bp@alien8.de \
--cc=dave.hansen@linux.intel.com \
--cc=decui@microsoft.com \
--cc=haiyangz@microsoft.com \
--cc=hch@infradead.org \
--cc=hpa@zytor.com \
--cc=jroedel@suse.de \
--cc=linux-coco@lists.linux.dev \
--cc=linux-hyperv@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=lstoakes@gmail.com \
--cc=luto@kernel.org \
--cc=mhklinux@outlook.com \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=rick.p.edgecombe@intel.com \
--cc=sathyanarayanan.kuppuswamy@linux.intel.com \
--cc=seanjc@google.com \
--cc=tglx@linutronix.de \
--cc=thomas.lendacky@amd.com \
--cc=urezki@gmail.com \
--cc=wei.liu@kernel.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.