From: Ryan Roberts <ryan.roberts@arm.com>
To: Zi Yan <ziy@nvidia.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
"Matthew Wilcox (Oracle)" <willy@infradead.org>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
SeongJae Park <sj@kernel.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
damon@lists.linux.dev
Subject: Re: [RESEND PATCH v1 1/5] mm: vmalloc must set pte via arch code
Date: Fri, 12 May 2023 12:01:57 +0100 [thread overview]
Message-ID: <9d89ba3d-775f-426f-0956-0d002193bd4d@arm.com> (raw)
In-Reply-To: <F6BE4C55-EDF2-47DB-A1D3-F4DEA93E89D4@nvidia.com>
On 11/05/2023 16:00, Zi Yan wrote:
> On 11 May 2023, at 9:21, Ryan Roberts wrote:
>
>> It is bad practice to directly set pte entries within a pte table.
>> Instead all modifications must go through arch-provided helpers such as
>> set_pte_at() to give the arch code visibility and allow it to validate
>> (and potentially modify) the operation.
>>
>> Fixes: 3e9a9e256b1e ("mm: add a vmap_pfn function")
>> Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
>> ---
>> mm/vmalloc.c | 5 ++++-
>> 1 file changed, 4 insertions(+), 1 deletion(-)
>>
> LGTM. Reviewed-by: Zi Yan <ziy@nvidia.com>
Thanks for the reviews!
next prev parent reply other threads:[~2023-05-12 11:02 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-11 13:21 [RESEND PATCH v1 0/5] Encapsulate PTE contents from non-arch code Ryan Roberts
2023-05-11 13:21 ` [RESEND PATCH v1 1/5] mm: vmalloc must set pte via arch code Ryan Roberts
2023-05-11 15:00 ` Zi Yan
2023-05-12 11:01 ` Ryan Roberts [this message]
2023-05-13 13:14 ` Lorenzo Stoakes
2023-05-15 8:29 ` Ryan Roberts
2023-05-15 11:25 ` Lorenzo Stoakes
2023-05-15 12:14 ` Ryan Roberts
2023-05-17 6:20 ` Christoph Hellwig
2023-05-17 6:23 ` Lorenzo Stoakes
2023-05-17 6:18 ` Christoph Hellwig
2023-05-11 13:21 ` [RESEND PATCH v1 2/5] mm: damon must atomically clear young on ptes and pmds Ryan Roberts
2023-05-11 15:01 ` Zi Yan
2023-05-11 13:21 ` [RESEND PATCH v1 3/5] mm: Fix failure to unmap pte on highmem systems Ryan Roberts
2023-05-11 15:01 ` Zi Yan
2023-05-11 13:21 ` [RESEND PATCH v1 4/5] mm: Add new ptep_deref() helper to fully encapsulate pte_t Ryan Roberts
2023-05-11 13:21 ` [RESEND PATCH v1 5/5] mm: ptep_deref() conversion Ryan Roberts
2023-05-11 17:37 ` kernel test robot
2023-05-12 10:50 ` Ryan Roberts
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