From: Ralf Baechle <ralf@linux-mips.org>
To: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: aleksey.makarov@auriga.com, james.hogan@imgtec.com,
paul.burton@imgtec.com, david.daney@cavium.com,
peterz@infradead.org, linux-mips@linux-mips.org,
linux-kernel@vger.kernel.org, davidlohr@hp.com,
kirill@shutemov.name, akpm@linux-foundation.org,
mingo@kernel.org
Subject: Re: [PATCH v2] MIPS64: Support of at least 48 bits of SEGBITS
Date: Fri, 15 May 2015 23:53:21 +0200 [thread overview]
Message-ID: <20150515215320.GI2322@linux-mips.org> (raw)
In-Reply-To: <20150515013351.7450.12130.stgit@ubuntu-yegoshin>
On Thu, May 14, 2015 at 06:34:43PM -0700, Leonid Yegoshin wrote:
The order 1 allocation for the PGD are concerning me a little. On a
system under even moderate memory pressure that might become a bit of
a reliability or performance issue.
With 4kB pages we already need order 1 or even 2 allocations for the
allocation of the stack and some folks have reported that to be an issue
so we may have to start using the PUD for very large VA spaces.
Ralf
next prev parent reply other threads:[~2015-05-15 21:53 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-15 1:34 [PATCH v2] MIPS64: Support of at least 48 bits of SEGBITS Leonid Yegoshin
2015-05-15 1:34 ` Leonid Yegoshin
2015-05-15 10:39 ` Sergei Shtylyov
2015-05-15 16:28 ` David Daney
2015-05-15 19:03 ` Leonid Yegoshin
2015-05-16 2:11 ` Maciej W. Rozycki
2015-05-15 20:49 ` David Daney
2015-05-15 21:01 ` Leonid Yegoshin
2015-05-15 21:01 ` Leonid Yegoshin
2015-05-15 21:53 ` Ralf Baechle [this message]
2015-05-15 22:39 ` Leonid Yegoshin
2015-05-15 22:39 ` Leonid Yegoshin
2015-05-16 2:42 ` Joshua Kinard
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