From: Kees Cook <kees@kernel.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
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>,
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>, Ard Biesheuvel <ardb@kernel.org>,
Mike Rapoport <rppt@kernel.org>
Subject: Re: [PATCH v3 2/2] pstore/ramoops: Add ramoops.mem_name= command line option
Date: Wed, 12 Jun 2024 11:45:57 -0700 [thread overview]
Message-ID: <202406121145.8860502D7@keescook> (raw)
In-Reply-To: <20240611144949.703297941@goodmis.org>
On Tue, Jun 11, 2024 at 10:49:13AM -0400, Steven Rostedt wrote:
> From: "Steven Rostedt (Google)" <rostedt@goodmis.org>
>
> Add a method to find a region specified by reserve_mem=nn:align:name for
> ramoops. Adding a kernel command line parameter:
>
> reserve_mem=12M:4096:oops ramoops.mem_name=oops
>
> Will use the size and location defined by the memmap parameter where it
> finds the memory and labels it "oops". The "oops" in the ramoops option
> is used to search for it.
>
> This allows for arbitrary RAM to be used for ramoops if it is known that
> the memory is not cleared on kernel crashes or soft reboots.
>
> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Kees Cook <kees@kernel.org>
Let me know if this should go via the pstore tree, if you'd rather carry
it?
--
Kees Cook
next prev parent reply other threads:[~2024-06-12 18:45 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-11 14:49 [PATCH v3 0/2] mm/memblock: Add "reserve_mem" to reserved named memory at boot up Steven Rostedt
2024-06-11 14:49 ` [PATCH v3 1/2] " Steven Rostedt
2024-06-11 14:49 ` [PATCH v3 2/2] pstore/ramoops: Add ramoops.mem_name= command line option Steven Rostedt
2024-06-12 18:45 ` Kees Cook [this message]
2024-06-12 18:52 ` Steven Rostedt
2024-06-13 6:02 ` Mike Rapoport
2024-06-13 6:11 ` Ard Biesheuvel
2024-06-13 13:26 ` Steven Rostedt
2024-06-13 14:06 ` Ard Biesheuvel
2024-06-13 14:31 ` Steven Rostedt
2024-06-13 14:42 ` Kees Cook
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