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

["Christoph Egger" <cegger%netbsd.org@localhost>]

Module Name:    src
Committed By:   cegger
Date:           Thu May 10 12:35:53 UTC 2012

Modified Files:
        src/sys/arch/x86/x86: cpu_ucode_amd.c

Log Message:
xc_wait() does not wait for all cpus to finish
their callback. That means the ucode buffer is released while still in use
and this causes a crash.
Quick fix: check if the ucode buffer has been freed and abort.
You may need to run 'cpuctl ucode' twice to apply it to all cpus.

Per discussion with rmind@ use low priority xcalls and splhigh.


To generate a diff of this commit:
cvs rdiff -u -r1.2 -r1.3 src/sys/arch/x86/x86/cpu_ucode_amd.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.