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| From: | Richard Henderson |
| Subject: | Re: Rational behind partial AVX support in Qemu |
| Date: | Wed, 5 Jan 2022 18:45:13 -0800 |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0 |
On 1/5/22 9:09 AM, Stevie Lavern wrote:
Hello, I'm currently testing various binaries under qemu linux user and went into a strange bug.Here is the TLDR: is there a reason to allow VEX.L to be 1 when not supporting AVX instructions?
There are some integer instructions that use vex encoding, e.g. andn, and we support some of those, thus any support for VEX at all. But you're probably correct that we could usefully filter VEX.L = 1 early.
r~
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