PR/57661 CVS commit: src/sys/arch/x86/x86

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

The following reply was made to PR port-amd64/57661; it has been noted by GNATS.

From: "Taylor R Campbell" <riastradh%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/57661 CVS commit: src/sys/arch/x86/x86
Date: Wed, 14 May 2025 23:39:54 +0000

 Module Name:	src
 Committed By:	riastradh
 Date:		Wed May 14 23:39:54 UTC 2025
 
 Modified Files:
 	src/sys/arch/x86/x86: fpu.c
 
 Log Message:
 x86/fpu.c: Reduce needless stack usage of fpuinit_mxcsr_mask.
 
 This is using the FXSAVE instruction explicitly, which is defined to
 operate on a 512-byte area, unconditionally, so let's just use the
 struct fxsave type we've defined for that instead of the larger union
 savefpu.
 
 XXX The fxsave/fxrstor functions should really be typed, but that
 requires moving includes or definitions around between cpufunc.h and
 cpu_extende_state.h which might have userland API implications that
 I'd rather not think about right now.
 
 PR port-amd64/57661: Crash when booting on Xeon Silver 4416+ in
 KVM/Qemu
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.92 -r1.93 src/sys/arch/x86/x86/fpu.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.