From: Hollis Blanchard <hollisb@us.ibm.com>
To: Keir Fraser <keir@xensource.com>
Cc: xen-devel <xen-devel@lists.xensource.com>,
xen-ppc-devel <xen-ppc-devel@lists.xensource.com>
Subject: Re: schedule() vs softirqs
Date: Fri, 15 Dec 2006 14:41:34 -0600 [thread overview]
Message-ID: <1166215294.18449.61.camel@basalt> (raw)
In-Reply-To: <C1A8AF75.62C2%keir@xensource.com>
On Fri, 2006-12-15 at 20:00 +0000, Keir Fraser wrote:
>
> > Also, that doesn't solve the lazy register saving problem.
>
> I assume this is a PPC-specific issue?
It's an issue with any architecture with a large number of registers
which aren't automatically saved by hardware (and a C ABI that makes
some of them non-volatile).
x86 has a small number of registers. ia64 automatically saves them (from
what I understand). So of the currently-supported architectures, yes,
that leaves PowerPC.
--
Hollis Blanchard
IBM Linux Technology Center
next prev parent reply other threads:[~2006-12-15 20:41 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-15 17:27 schedule() vs softirqs Hollis Blanchard
2006-12-15 17:36 ` Keir Fraser
2006-12-15 19:09 ` [Xen-devel] " Hollis Blanchard
2006-12-15 20:00 ` Keir Fraser
2006-12-15 20:41 ` Hollis Blanchard [this message]
2006-12-15 21:39 ` Keir Fraser
2006-12-15 23:51 ` Hollis Blanchard
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