re: port-amd64/59860: nvmm: support AVX2, AVX512, &c.

"matthew green via gnats" <[email protected]>
Newsgroups gmane.os.netbsd.bugs
Message-ID <[email protected]>
The following reply was made to PR port-amd64/59860; it has been noted by GNATS.

From: matthew green <[email protected]>
To: [email protected], [email protected],
    [email protected], [email protected],
    [email protected]
Cc: 
Subject: re: port-amd64/59860: nvmm: support AVX2, AVX512, &c.
Date: Mon, 13 Jul 2026 15:08:22 +1000

 Taylor pointed me at
 https://www.NetBSD.org/~riastradh/tmp/20260712/nvmmxr0assert.patch
 as a real fix, but unfortunately it has made things worse for me:
 
 fatal protection fault in supervisor mode
 trap type 4 code 0 rip 0xffffffff8023d36e cs 0x8 rflags 0x10246 cr2 0x743a=
 28a83428 ilevel 0x6 rsp 0xffffba1b8719bd78
 curlwp 0xffffb765ba18d800 pid 1590.1786 lowest kstack 0xffffba1b871972c0
 panic: trap
 cpu3: Begin traceback...
 vpanic() at netbsd:vpanic+0x189
 panic() at netbsd:panic+0x3c
 trap() at netbsd:trap+0xb35
 --- trap (number 4) ---
 xrstor() at netbsd:xrstor+0xa
 nvmm_ioctl() at nvmm:nvmm_ioctl+0xef6
 sys_ioctl() at netbsd:sys_ioctl+0x1fa
 syscall() at netbsd:syscall+0x9d
 --- syscall (number 54) ---
 
 when starting the nvmm VM.
 
 
 .mrg.
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