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From: Alexander Graf <agraf@suse.de>
To: Tom Musta <tommusta@gmail.com>,
	qemu-devel@nongnu.org, qemu-ppc@nongnu.org
Subject: Re: [Qemu-devel] [2.3 V2 PATCH 0/6] target-ppc: Assorted Floating Point Bugs and Cleanup
Date: Thu, 20 Nov 2014 15:51:09 +0100	[thread overview]
Message-ID: <546DFFDD.6070106@suse.de> (raw)
In-Reply-To: <1415828764-10582-1-git-send-email-tommusta@gmail.com>



On 12.11.14 22:45, Tom Musta wrote:
> This patch series corrects some issues with floating point emulation
> on Power.
> 
> Patch 1 corrects a corner case in the square root instructions, which
> incorrectly react to NaN whose sign bit is a 1.
> 
> Patches 2-6 correct a rather pervasive problem with modeling of the CR[1]
> field (i.e. the "dot form" instructions of the FPU).
> 
> The bugs were found by running random test patterns through actual Power
> hardware (P7 and P8) and comparing against QEMU.
> 
> The patches conflict quite a bit with Paolo's series that splits CR into
> 32 one bit registers.  Paolo: is V3 of your patch series coming anytime 
> soon?
> 
> V2 Reworked patches to pick up the gen_set_cr1_from_fpscr() utility that 
> was recently added by Paolo Bonzini.

Thanks, applied all to ppc-next-2.3.


Alex

      parent reply	other threads:[~2014-11-20 14:51 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-12 21:45 [Qemu-devel] [2.3 V2 PATCH 0/6] target-ppc: Assorted Floating Point Bugs and Cleanup Tom Musta
2014-11-12 21:45 ` [Qemu-devel] [2.3 V2 PATCH 1/6] target-ppc: VXSQRT Should Not Be Set for NaNs Tom Musta
2014-11-12 21:46 ` [Qemu-devel] [2.3 V2 PATCH 2/6] target-ppc: Fix Floating Point Move Instructions That Set CR1 Tom Musta
2014-11-20 14:14   ` Alexander Graf
2014-11-20 14:32     ` Tom Musta
2014-11-20 14:49       ` Alexander Graf
2014-11-12 21:46 ` [Qemu-devel] [2.3 V2 PATCH 3/6] target-ppc: mffs. Should Set CR1 from FPSCR Bits Tom Musta
2014-11-12 21:46 ` [Qemu-devel] [2.3 V2 PATCH 4/6] target-ppc: Fully Migrate to gen_set_cr1_from_fpscr Tom Musta
2014-11-12 21:46 ` [Qemu-devel] [2.3 V2 PATCH 5/6] target-ppc: Eliminate set_fprf Argument From gen_compute_fprf Tom Musta
2014-11-12 21:46 ` [Qemu-devel] [2.3 V2 PATCH 6/6] target-ppc: Eliminate set_fprf Argument From helper_compute_fprf Tom Musta
2014-11-20 14:51 ` Alexander Graf [this message]

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