From: Paolo Bonzini <pbonzini@redhat.com>
To: Richard Henderson <rth@twiddle.net>
Cc: Blue Swirl <blauwirbel@gmail.com>, qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] Re: Compile files only once: some planning
Date: Wed, 24 Mar 2010 15:45:59 +0100 [thread overview]
Message-ID: <4BAA25A7.7000201@redhat.com> (raw)
In-Reply-To: <4BA9F52C.6070309@twiddle.net>
On 03/24/2010 12:19 PM, Richard Henderson wrote:
> On 03/24/2010 02:47 AM, Paolo Bonzini wrote:
>> 1) make CPUState define only common fields. Include CPUState at the
>> beginning of each per-target CPUXYZState.
>
> Irritatingly, the common fields contain quite big TLBs. And the
> offsets from the start of env affect the compactness of the code
> generated from TCG. We really really want the general registers
> to come first to make sure that those offsets fit the host's
> reg+offset addressing mode.
What about adding a 512-bytes (or more) block or something like that at
the beginning of CPUState with a union, so you can put the per-target
stuff there?
Paolo
next prev parent reply other threads:[~2010-03-24 14:46 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-23 21:43 [Qemu-devel] Compile files only once: some planning Blue Swirl
2010-03-24 9:17 ` [Qemu-devel] " Juan Quintela
2010-03-24 17:56 ` Blue Swirl
2010-03-24 19:28 ` Juan Quintela
2010-03-24 22:47 ` Paul Brook
2010-03-24 22:57 ` Anthony Liguori
2010-03-25 3:08 ` Jamie Lokier
2010-03-25 2:54 ` Jamie Lokier
2010-03-24 9:47 ` Paolo Bonzini
2010-03-24 11:19 ` Richard Henderson
2010-03-24 14:45 ` Paolo Bonzini [this message]
2010-03-24 14:56 ` Paul Brook
2010-03-24 16:18 ` Paolo Bonzini
2010-03-24 17:27 ` Paul Brook
2010-03-24 17:07 ` Richard Henderson
2010-03-24 20:12 ` Richard Henderson
2010-03-24 18:00 ` Blue Swirl
2010-03-24 19:39 ` Michael S. Tsirkin
2010-03-24 20:05 ` Blue Swirl
2010-03-24 20:08 ` Michael S. Tsirkin
2010-03-24 20:24 ` Blue Swirl
2010-03-24 20:24 ` Michael S. Tsirkin
2010-03-24 20:32 ` Blue Swirl
2010-03-24 20:28 ` Anthony Liguori
2010-03-24 21:00 ` Aurelien Jarno
2010-03-24 22:33 ` Paul Brook
2010-03-24 22:50 ` Anthony Liguori
2010-03-24 23:05 ` Paul Brook
2010-03-24 23:07 ` Anthony Liguori
2010-03-25 8:21 ` Michael S. Tsirkin
2010-03-25 12:01 ` Paul Brook
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