From: benh@kernel.crashing.org (Benjamin Herrenschmidt)
To: linux-arm-kernel@lists.infradead.org
Subject: [GIT PULL] arm64 fixes for 3.11
Date: Sat, 27 Jul 2013 09:47:53 +1000 [thread overview]
Message-ID: <1374882473.9200.33.camel@pasglop> (raw)
In-Reply-To: <CA+55aFzmEhGvqY883Bg568Gguewy41X9n1qDeaHkW2We6VVhZg@mail.gmail.com>
On Fri, 2013-07-26 at 12:54 -0700, Linus Torvalds wrote:
>
> *Some* other 64-bit architectures do 16k stack sizes. But neither
> x86-64 nor powerpc do, afaik. Instead, they do irq stacks, which is
> generally a better idea than having one big stack.
Sadly you over estimated us here :-) We do 16K *and* irq stacks on
64-bit ... Remember our ABI with it's 112 bytes minimum per frame ?
It's been a while since I've last audited our actual usage mind you, we
*might* be able to reduce it but at this stage, since our typical
configs use a 64K base page size, it's not a big deal (ie, it's not an
order-N allocation).
Cheers,
Ben.
prev parent reply other threads:[~2013-07-26 23:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-26 15:55 [GIT PULL] arm64 fixes for 3.11 Catalin Marinas
2013-07-26 19:54 ` Linus Torvalds
2013-07-26 23:47 ` Benjamin Herrenschmidt [this message]
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