From: "Luck, Tony" <tony.luck@intel.com>
To: Steven Rostedt <rostedt@goodmis.org>, Ard Biesheuvel <ardb@kernel.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-trace-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" <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" <x86@kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Peter Zijlstra <peterz@infradead.org>,
Kees Cook <keescook@chromium.org>,
"Guilherme G. Piccoli" <gpiccoli@igalia.com>,
"linux-hardening@vger.kernel.org"
<linux-hardening@vger.kernel.org>,
Guenter Roeck <linux@roeck-us.net>,
"Ross Zwisler" <zwisler@google.com>,
"wklin@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>, Mike Rapoport <rppt@kernel.org>
Subject: RE: [PATCH 1/2] mm/memblock: Add "reserve_mem" to reserved named memory at boot up
Date: Tue, 4 Jun 2024 16:05:04 +0000 [thread overview]
Message-ID: <SJ1PR11MB60836B1DBD5C41BF22A66430FCF82@SJ1PR11MB6083.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20240604070826.030c5202@gandalf.local.home>
> I have been using this on two different test machines, as well as a
> chromebook, and it appears to work on all ofthem. As well as for VMs. I
> plan on adding this to my workstation and server too (they use EFI).
I think that BIOS on Intel servers with ECC memory will stomp on all
memory (to ensure that ECC bits are all set to good values). There
might be a "fast boot" BIOS option to skip this (but using it leaves you
vulnerable after a crash due to ECC fail to hit the same error again).
-Tony
next prev parent reply other threads:[~2024-06-04 16:05 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-03 23:33 [PATCH 0/2] mm/pstore: Reserve named unspecified memory across boots Steven Rostedt
2024-06-03 23:33 ` [PATCH 1/2] mm/memblock: Add "reserve_mem" to reserved named memory at boot up Steven Rostedt
2024-06-04 5:52 ` Kees Cook
2024-06-04 10:57 ` Steven Rostedt
2024-06-04 6:03 ` Ard Biesheuvel
2024-06-04 11:08 ` Steven Rostedt
2024-06-04 16:05 ` Luck, Tony [this message]
2024-06-06 14:50 ` Steven Rostedt
2024-06-03 23:33 ` [PATCH 2/2] pstore/ramoops: Add ramoops.mem_name= command line option Steven Rostedt
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