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Date: Tue, 9 Apr 2024 17:23:58 -0400
From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>, Mark Rutland
 <mark.rutland@arm.com>, Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
 Andrew Morton <akpm@linux-foundation.org>, "Liam R. Howlett"
 <Liam.Howlett@oracle.com>, Vlastimil Babka <vbabka@suse.cz>, Lorenzo
 Stoakes <lstoakes@gmail.com>, linux-mm@kvack.org, Thomas Gleixner
 <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, Borislav Petkov
 <bp@alien8.de>, Dave Hansen <dave.hansen@linux.intel.com>, x86@kernel.org,
 "H. Peter Anvin" <hpa@zytor.com>, Peter Zijlstra <peterz@infradead.org>,
 Kees Cook <keescook@chromium.org>, Tony Luck <tony.luck@intel.com>,
 "Guilherme G. Piccoli" <gpiccoli@igalia.com>,
 linux-hardening@vger.kernel.org, Guenter Roeck <linux@roeck-us.net>, Ross
 Zwisler <zwisler@google.com>, wklin@google.com, Vineeth Remanan Pillai
 <vineeth@bitbyteword.org>, Joel Fernandes <joel@joelfernandes.org>,
 Suleiman Souhlal <suleiman@google.com>, Linus Torvalds
 <torvalds@linuxfoundation.org>, Catalin Marinas <catalin.marinas@arm.com>,
 Will Deacon <will@kernel.org>
Subject: Re: [POC][RFC][PATCH 0/2] pstore/mm/x86: Add wildcard memmap to map
 pstore consistently
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On Tue, 09 Apr 2024 17:02:54 -0400
Steven Rostedt <rostedt@goodmis.org> wrote:

>   memmap=12M*4096:oops   ramoops.mem_name=oops

I forgot to mention that this makes it trivial for any machine that doesn't
clear memory on soft-reboot, to enable console ramoops (to have access to
the last boot dmesg without needing serial).

I tested this on a couple of my test boxes and on QEMU, and it works rather
well.

-- Steve