Re: [Qemu-devel] [Qemu-ppc] [PATCH 47/58] Implement POWER7's CFAR in TCG

2011-09-18 Thread David Gibson
On Sat, Sep 17, 2011 at 05:08:29PM +, Blue Swirl wrote: > On Wed, Sep 14, 2011 at 8:43 AM, Alexander Graf wrote: > > From: David Gibson > > > > This patch implements support for the CFAR SPR on POWER7 (Come From > > Address Register), which snapshots the PC value at the time of a branch or >

Re: [Qemu-devel] [Qemu-ppc] [PATCH 47/58] Implement POWER7's CFAR in TCG

2011-09-18 Thread Alexander Graf
Am 19.09.2011 um 08:00 schrieb David Gibson : > On Sat, Sep 17, 2011 at 05:08:29PM +, Blue Swirl wrote: >> On Wed, Sep 14, 2011 at 8:43 AM, Alexander Graf wrote: >>> From: David Gibson >>> >>> This patch implements support for the CFAR SPR on POWER7 (Come From >>> Address Register), which

Re: [Qemu-devel] [Qemu-ppc] [PATCH 01/58] spapr: proper qdevification

2011-09-18 Thread Paolo Bonzini
On 09/16/2011 04:08 PM, David Gibson wrote: > > Well, now I'm confused. I had a look at a pHyp machine, and Linux > > seemed to see it as multiple targets on a single channel, but I'm sure > > the PAPR spec says you shouldn't have that. So I'm going to have to > > look closer now. > > If this

Re: [Qemu-devel] [PATCH 5/8] tcg: Add interpreter for bytecode

2011-09-18 Thread Andi Kleen
> I think it also improves branch target prediction - if you have a tight > loop of a few opcodes the predictor can guess where you're headed (since > there is a separate lookup key for each opcode), whereas with the > original code, there's a single key which cannot be used to predict the > branc

Re: [Qemu-devel] [Qemu-ppc] [PATCH 01/58] spapr: proper qdevification

2011-09-18 Thread Thomas Huth
Am Fri, 16 Sep 2011 12:51:31 -0300 schrieb Benjamin Herrenschmidt : > > > I've done some readings about this problem today, and I think I've got > > an idea what might be wrong here - seems like a bug in SLOF to me. > > > > First, according to the SLOF source code, it seems to me that its > > in

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