From: sashiko-bot@kernel.org
To: "Pasha Tatashin" <pasha.tatashin@soleen.com>,
rppt@kernel.org, kuba@kernel.org, enelsonmoore@gmail.com,
bp@alien8.de, shuah@kernel.org, david@kernel.org,
akpm@linux-foundation.org, ljs@kernel.org, mhocko@suse.com,
skhan@linuxfoundation.org, vbabka@kernel.org,
dapeng1.mi@linux.intel.com, corbet@lwn.net, surenb@google.com,
kexec@lists.infradead.org, pratyush@kernel.org,
rdunlap@infradead.org, elver@google.com, graf@amazon.com,
lirongqing@baidu.com, liam@infradead.org, jlayton@kernel.org
Subject: Re: [PATCH v2 4/9] kho: do not modify incoming serialized blocks
Date: Sun, 25 Oct 2026 17:56:58 +0000 [thread overview]
Message-ID: <sashiko-outbox-184304@kernel.org> (raw)
In-Reply-To: <20261025174017.3870481-5-pasha.tatashin@soleen.com>
> When restoring an incoming block set via kho_block_set_restore(), the
> physical chain of blocks is already linked and bs->head_pa is already
> set. However, kho_block_add() unconditionally rewrites last->ser->next
> and bs->head_pa, and kho_block_set_shrink_one() clears
> new_last->ser->next even when operating on an incoming block set.
>
> In the upcoming KHO read-only mode, incoming serialized blocks are
> mapped read-only and must not be modified. Guard the ser->next and
> bs->head_pa updates in kho_block_add() and kho_block_set_shrink_one()
> with !bs->incoming.
>
> Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261025174017.3870481-1-pasha.tatashin@soleen.com?part=4
next prev parent reply other threads:[~2026-10-25 17:57 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-25 17:40 [PATCH v2 0/9] kho: add read-only Kexec Handover mode Pasha Tatashin
2026-10-25 17:40 ` [PATCH v2 1/9] kho: expose physical address of outgoing FDT Pasha Tatashin
2026-10-25 17:56 ` sashiko-bot
2026-10-25 17:40 ` [PATCH v2 2/9] kho: move radix tree and FDT helpers to common file Pasha Tatashin
2026-10-25 17:56 ` sashiko-bot
2026-10-25 17:40 ` [PATCH v2 3/9] kho: validate preservation metadata in kho_restore_vmalloc() Pasha Tatashin
2026-10-25 17:56 ` sashiko-bot
2026-10-25 17:40 ` [PATCH v2 4/9] kho: do not modify incoming serialized blocks Pasha Tatashin
2026-10-25 17:56 ` sashiko-bot [this message]
2026-10-25 17:40 ` [PATCH v2 5/9] kho: add read-only Kexec Handover mode Pasha Tatashin
2026-10-25 17:57 ` sashiko-bot
2026-10-25 17:40 ` [PATCH v2 6/9] kho: support read-only KHO mode in KHO core Pasha Tatashin
2026-10-25 17:57 ` sashiko-bot
2026-10-25 17:40 ` [PATCH v2 7/9] kho: support read-only KHO mode in kho_block Pasha Tatashin
2026-10-25 17:57 ` sashiko-bot
2026-10-25 17:40 ` [PATCH v2 8/9] kho: test: support read-only KHO mode in test_kho Pasha Tatashin
2026-10-25 17:57 ` sashiko-bot
2026-10-25 17:40 ` [PATCH v2 9/9] selftests: kho: add read-only KHO test to vmtest.sh Pasha Tatashin
2026-10-25 17:57 ` sashiko-bot
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