From: "Nikunj A. Dadhania" <nikunj@amd.com>
To: Mike Rapoport <rppt@kernel.org>
Cc: <ljs@kernel.org>, <akpm@linux-foundation.org>,
<baolu.lu@linux.intel.com>, <bp@alien8.de>,
<dave.hansen@linux.intel.com>, <david@kernel.org>,
<den@openvz.org>, <devnexen@gmail.com>, <hpa@zytor.com>,
<iommu@lists.linux.dev>, <jgg@ziepe.ca>, <jgross@suse.com>,
<jirislaby@kernel.org>, <kas@kernel.org>, <kevin.tian@intel.com>,
<liam@infradead.org>, <linux-kernel@vger.kernel.org>,
<linux-mm@kvack.org>, <lists@steffen.cc>, <luto@kernel.org>,
<mingo@redhat.com>, <peterz@infradead.org>, <pfalcato@suse.de>,
<shakeel.butt@linux.dev>, <stable@vger.kernel.org>,
<surenb@google.com>, <syzbot@syzkaller.appspotmail.com>,
<tglx@kernel.org>, <toshi.kani@hpe.com>, <vbabka@kernel.org>,
<vishal.moola@gmail.com>, <will@kernel.org>, <x86@kernel.org>,
<bharata@amd.com>, <Ananth.Narayan@amd.com>
Subject: Re: [PATCH 0/5] x86/mm/pat: CPA fixes
Date: Thu, 13 Aug 2026 14:54:58 +0530 [thread overview]
Message-ID: <b78d6e7c-b754-4872-9dce-793796a03296@amd.com> (raw)
In-Reply-To: <an2FdPPOWT50lLD4@kernel.org>
On 8/13/2026 2:21 PM, Mike Rapoport wrote:
> On Thu, Aug 13, 2026 at 05:55:44AM +0000, Nikunj A Dadhania wrote:
>> On Fri, Aug 07, 2026 at 04:36:08PM +0100, Lorenzo Stoakes (ARM) wrote:
>>> +static void poke_vmalloc_pages_safe(struct page **pages, void *addr,
>>> + bool cross_page_boundary)
>>> +{
>>> + guard(mmap_read_lock)(&init_mm);
>>> + poke_vmalloc_pages(pages, addr, cross_page_boundary);
>>> +}
>>
>> Tested just the proposed patch from this email (without the rest of the
>> CPA fixes series) on the 512-guest concurrent boot harness (details in
>
> For this fix to actually fix anything, the patches that add locking of
> mmap_lock to CPA are needed still.
Noted.
Noticed that you have posted a v2, will test the full series and
respond back with results.
Regards,
Nikunj
next prev parent reply other threads:[~2026-08-13 9:25 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-28 13:07 [PATCH 0/5] x86/mm/pat: CPA fixes Mike Rapoport (Microsoft)
2026-07-28 13:07 ` [PATCH 1/5] x86/mm/pat: introcude cpa_lock() and cpa_unlock() Mike Rapoport (Microsoft)
2026-07-28 13:13 ` Lorenzo Stoakes (ARM)
2026-07-28 14:21 ` Peter Zijlstra
2026-07-28 14:30 ` Dave Hansen
2026-07-28 14:31 ` Peter Zijlstra
2026-07-28 14:46 ` Mike Rapoport
2026-07-28 14:50 ` Lorenzo Stoakes (ARM)
2026-07-28 14:55 ` Peter Zijlstra
2026-07-28 15:01 ` Peter Zijlstra
2026-07-28 15:20 ` Lorenzo Stoakes (ARM)
2026-07-28 15:33 ` Peter Zijlstra
2026-07-28 15:54 ` Mike Rapoport
2026-07-28 15:02 ` Lorenzo Stoakes (ARM)
2026-07-28 15:30 ` Peter Zijlstra
2026-07-28 15:16 ` Peter Zijlstra
2026-07-28 16:01 ` Mike Rapoport
2026-07-28 13:07 ` [PATCH 2/5] x86/mm/pat: acquire init_mm write lock on collapse to avoid UAF Mike Rapoport
2026-07-28 13:07 ` [PATCH 3/5] x86/mm/pat: acquire init_mm read lock on attribute change " Mike Rapoport
2026-07-28 13:14 ` Lorenzo Stoakes (ARM)
2026-07-28 13:07 ` [PATCH 4/5] x86/mm/pat: allocate split page tables as kernel page tables Mike Rapoport
2026-07-28 13:07 ` [PATCH 5/5] x86/mm/pat: fix effective RW computation in lookup_address_in_pgd_attr() Mike Rapoport (Microsoft)
2026-07-28 13:11 ` [PATCH 0/5] x86/mm/pat: CPA fixes Lorenzo Stoakes (ARM)
2026-07-30 15:53 ` Steffen Dirkwinkel
2026-08-03 12:41 ` Pedro Falcato
2026-08-07 15:36 ` Lorenzo Stoakes (ARM)
2026-08-12 11:46 ` Pedro Falcato
2026-08-12 15:15 ` Mike Rapoport
2026-08-12 15:42 ` Lorenzo Stoakes (ARM)
2026-08-13 5:55 ` Nikunj A Dadhania
2026-08-13 8:51 ` Mike Rapoport
2026-08-13 9:23 ` Lorenzo Stoakes (ARM)
2026-08-13 9:24 ` Nikunj A. Dadhania [this message]
2026-08-03 15:14 ` Mike Rapoport
2026-08-07 14:34 ` Lorenzo Stoakes (ARM)
2026-08-07 15:00 ` Lorenzo Stoakes (ARM)
2026-08-12 22:20 ` Dave Hansen
2026-08-13 8:57 ` Lorenzo Stoakes (ARM)
2026-08-13 9:06 ` Lorenzo Stoakes (ARM)
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=b78d6e7c-b754-4872-9dce-793796a03296@amd.com \
--to=nikunj@amd.com \
--cc=Ananth.Narayan@amd.com \
--cc=akpm@linux-foundation.org \
--cc=baolu.lu@linux.intel.com \
--cc=bharata@amd.com \
--cc=bp@alien8.de \
--cc=dave.hansen@linux.intel.com \
--cc=david@kernel.org \
--cc=den@openvz.org \
--cc=devnexen@gmail.com \
--cc=hpa@zytor.com \
--cc=iommu@lists.linux.dev \
--cc=jgg@ziepe.ca \
--cc=jgross@suse.com \
--cc=jirislaby@kernel.org \
--cc=kas@kernel.org \
--cc=kevin.tian@intel.com \
--cc=liam@infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=lists@steffen.cc \
--cc=ljs@kernel.org \
--cc=luto@kernel.org \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=pfalcato@suse.de \
--cc=rppt@kernel.org \
--cc=shakeel.butt@linux.dev \
--cc=stable@vger.kernel.org \
--cc=surenb@google.com \
--cc=syzbot@syzkaller.appspotmail.com \
--cc=tglx@kernel.org \
--cc=toshi.kani@hpe.com \
--cc=vbabka@kernel.org \
--cc=vishal.moola@gmail.com \
--cc=will@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.