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authorKonstantin Belousov <kib@FreeBSD.org>2018-03-20 17:47:29 +0000
committerKonstantin Belousov <kib@FreeBSD.org>2018-03-20 17:47:29 +0000
commit9cffc92c62d9cbf592206ac70cd96ebef816b298 (patch)
tree655ad09b01a950ad6ff0e0e1a06dd3559a5e871f /sys/conf/files.amd64
parent2337dc6430a1a169987955b6ee27bebf950f5491 (diff)
downloadsrc-9cffc92c62d9cbf592206ac70cd96ebef816b298.tar.gz
src-9cffc92c62d9cbf592206ac70cd96ebef816b298.zip
Disable write protection around patching of XSAVE instruction in the
context switch code. Some BIOSes give control to the OS with CR0.WP already set, making the kernel text read-only before cpu_startup(). Reported by: Peter Lei <peter.lei@ieee.org> Reviewed by: jtl Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D14768
Notes
Notes: svn path=/head/; revision=331253
Diffstat (limited to 'sys/conf/files.amd64')
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