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UBUNTU: SAUCE: x86/bugs: Honour SPEC_CTRL default
authorStefan Bader <stefan.bader@canonical.com>
Mon, 7 May 2018 14:47:02 +0000 (16:47 +0200)
committerStefan Bader <stefan.bader@canonical.com>
Mon, 14 May 2018 10:09:57 +0000 (12:09 +0200)
commit159e800c5ef2b3cd09df71bba42fe9fe1780e45b
treefda25c00610da684fd543786278edd05ae67da37tree
parent7d85e158712ca8ed70206c893c49b501ff24c4a2commit | diff
UBUNTU: SAUCE: x86/bugs: Honour SPEC_CTRL default

Upstream implementation reads the content of the SPEC_CTRL
MSR once during boot to record the state of reserved bits.
Any access to this MSR (to enable/disable IBRS) needs to
preserve those reserved bits.

This tries to catch and convert all occurrances of the
Intel based IBRS changes we carry.

CVE-2018-3639 (x86)

Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
arch/x86/include/asm/mwait.h diff | blob | blame | history
arch/x86/kernel/process.c diff | blob | blame | history
arch/x86/kernel/smpboot.c diff | blob | blame | history
arch/x86/lib/delay.c diff | blob | blame | history
kernel/sysctl.c diff | blob | blame | history
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