From: Joerg Roedel <joro@8bytes.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Joerg Roedel <jroedel@suse.de>,
x86@kernel.org, hpa@zytor.com,
Dave Hansen <dave.hansen@linux.intel.com>,
Andy Lutomirski <luto@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Steven Rostedt <rostedt@goodmis.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH] x86/mm: Pre-allocate p4d/pud pages for vmalloc area
Date: Fri, 26 Jun 2020 13:44:43 +0200 [thread overview]
Message-ID: <20200626114443.GS3701@8bytes.org> (raw)
In-Reply-To: <20200626113215.GG117543@hirez.programming.kicks-ass.net>
On Fri, Jun 26, 2020 at 01:32:15PM +0200, Peter Zijlstra wrote:
> That is, this is boot time only, right? clone() would return -ENOMEM, as
> it's part of the normal page-table copy.
Yes, the pre-allocation happens shortly after the buddy allocator took
over from bootmem. I don't quite get what clone() has to do with it.
Joerg
prev parent reply other threads:[~2020-06-26 11:44 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-26 9:34 [PATCH] x86/mm: Pre-allocate p4d/pud pages for vmalloc area Joerg Roedel
2020-06-26 11:07 ` Peter Zijlstra
2020-06-26 11:17 ` Joerg Roedel
2020-06-26 11:31 ` Peter Zijlstra
2020-06-26 11:32 ` Peter Zijlstra
2020-06-26 11:44 ` Joerg Roedel [this message]
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