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Re: [PATCH] x86emul/test: improve failure location identification for FMA sub-test
- To: Jan Beulich <jbeulich@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <Andrew.Cooper3@xxxxxxxxxx>
- Date: Thu, 16 Jun 2022 13:15:06 +0000
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- Thread-topic: [PATCH] x86emul/test: improve failure location identification for FMA sub-test
On 14/06/2022 17:03, Jan Beulich wrote:
> When some FMA set of insns is included in the base instruction set (XOP,
> AVX512F, and AVX512-FP16 at present), simd_test() simply invokes
> fma_test(), negating its return value. In case of a failure this would
> yield a value close to 4G, which doesn't lend itself to easy
> identification of the failing test case. Recognize the case in
> simd_check_regs() and emit alternative output identifying FMA.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
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