Re: kern/60426 (Signal handler corrupts AVX (YMM) registers)

[riastradh%NetBSD.org@localhost]

Synopsis: Signal handler corrupts AVX (YMM) registers

State-Changed-From-To: analyzed->needs-pullups
State-Changed-By: riastradh%NetBSD.org@localhost
State-Changed-When: Fri, 10 Jul 2026 21:53:23 +0000
State-Changed-Why:
fixed in HEAD, needs pullup-11, pullup-10, pullup-9

(Fortunately, this should have essentially no ABI implications, except
perhaps that a signal handler can no longer update the x87/SSE registers
in the same part of an mcontext_t in a process that _also_ uses AVX
state or other XSAVE extensions.  And, perhaps we could make that work
too with a little more effort, to have the XSAVE area overlap with the
FXSAVE area that's already in the mcontext_t.)