From: sashiko-bot@kernel.org
To: "John Ogness" <john.ogness@linutronix.de>,
"Petr Mladek" <pmladek@suse.com>
Cc: "Sergey Senozhatsky" <senozhatsky@chromium.org>,
"Steven Rostedt" <rostedt@goodmis.org>,
"Ryan Roberts" <ryan.roberts@arm.com>,
"Breno Leitao" <leitao@debian.org>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Baoquan He" <baoquan.he@linux.dev>,
"Mike Rapoport" <rppt@kernel.org>,
"Pasha Tatashin" <pasha.tatashin@soleen.com>,
"Pratyush Yadav" <pratyush@kernel.org>,
"Dave Young" <ruirui.yang@linux.dev>,
kexec@lists.infradead.org
Subject: Re: [PATCH printk 5/6] printk: Add panic+kexec flush point
Date: Tue, 10 Nov 2026 12:31:44 +0000 [thread overview]
Message-ID: <sashiko-outbox-207026@kernel.org> (raw)
In-Reply-To: <20261109123127.489676-6-john.ogness@linutronix.de>
> During panic, nbcon consoles transition to atomic printing. However,
> there are consoles that do not support safe atomic printing
> (CON_NBCON_ATOMIC_UNSAFE). Such consoles will only flush during
> panic if their unsafe flush policy allows them to do so.
>
> The unsafe flush policy NBCON_PANIC_FLUSH only allows unsafe
> flushing when particular flushes are explicitly invoked. Call
> printk_trigger_flush(PR_FLUSH_RESTART) before performing the kexec
> in order to give such consoles a chance to perform an unsafe flush.
>
> Signed-off-by: John Ogness <john.ogness@linutronix.de>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261109123127.489676-1-john.ogness@linutronix.de?part=5
next prev parent reply other threads:[~2026-11-10 12:31 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-09 12:31 [PATCH printk 0/6] Introduce policies for unsafe flushing John Ogness
2026-11-09 12:31 ` [PATCH printk 1/6] printk: Introduce and specify flush reasons John Ogness
2026-11-09 16:37 ` kernel test robot
2026-11-09 12:31 ` [PATCH printk 2/6] console: Introduce unsafe flush policy flags John Ogness
2026-11-09 22:05 ` Andy Shevchenko
2026-11-10 8:49 ` John Ogness
2026-11-09 12:31 ` [PATCH printk 3/6] printk: Evaluate flush policy in nbcon_allow_unsafe_takeover() John Ogness
2026-11-09 14:08 ` Breno Leitao
2026-11-09 14:28 ` John Ogness
2026-11-09 16:47 ` Breno Leitao
2026-11-09 12:31 ` [PATCH printk 4/6] printk: Remove nbcon_atomic_flush_unsafe() John Ogness
2026-11-09 12:31 ` [PATCH printk 5/6] printk: Add panic+kexec flush point John Ogness
2026-11-10 12:31 ` sashiko-bot [this message]
2026-11-09 12:31 ` [PATCH printk 6/6] netconsole: Always perform unsafe flushing on panic/kdb/restart John Ogness
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