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Re: [PATCH v2 63/93] tcg/tci: Use ffi for calls

From: Stefan Weil
Subject: Re: [PATCH v2 63/93] tcg/tci: Use ffi for calls
Date: Mon, 8 Feb 2021 20:04:51 +0100
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.16; rv:78.0) Gecko/20100101 Thunderbird/78.7.0

Am 08.02.21 um 18:39 schrieb Richard Henderson:
On 2/8/21 5:07 AM, Stefan Weil wrote:
Richard, this commit is also the one which breaks qemu-system-i386 on sparc64
for me:
You'll have to give me more details than that, because qemu-system-i386 works
for me on a niagara5 w/ debian sid.

I am testing on a similar Debian system (debian-ports unstable), but with a Niagara3 cpu:

Linux gcc102.fsffrance.org 5.10.0-3-sparc64-smp #1 SMP Debian 5.10.12-1 (2021-01-30) sparc64 GNU/Linux

gcc (Debian 10.2.1-6) 10.2.1 20210110

$ cat /proc/cpuinfo
cpu        : UltraSparc T3 (Niagara3)
fpu        : UltraSparc T3 integrated FPU
pmu        : niagara3
prom        : OBP 4.34.6.c 2017/03/22 13:55
type        : sun4v
ncpus probed    : 256
ncpus active    : 256
D$ parity tl1    : 0
I$ parity tl1    : 0
cpucaps        : flush,stbar,swap,muldiv,v9,blkinit,n2,mul32,div32,v8plus,popc,vis,vis2,ASIBlkInit,fmaf,vis3,hpc

During "git bisect" I had to apply fixes for unaligned memory access as your series starts with TCI code which does not include my patch for that. The first bisect step was tested with your tci-next branch, the last step was tested with my bisect-tci branch (https://gitlab.com/stweil/qemu/-/commits/bisect-tci).


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