diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2018-05-10 20:42:48 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-22 16:58:04 +0200 |
| commit | b0ef8c72b3d70505ba7fd72af6b1e3fc9b3ae9bc (patch) | |
| tree | a23d02c40da88e82533575b905cebe3c49ba408e /mm/bootmem.c | |
| parent | 0ec827f974e198c609c2f258a5a1f11f9af48bb2 (diff) | |
x86/speculation, KVM: Implement support for VIRT_SPEC_CTRL/LS_CFG
commit 47c61b3955cf712cadfc25635bf9bc174af030ea upstream
Add the necessary logic for supporting the emulated VIRT_SPEC_CTRL MSR to
x86_virt_spec_ctrl(). If either X86_FEATURE_LS_CFG_SSBD or
X86_FEATURE_VIRT_SPEC_CTRL is set then use the new guest_virt_spec_ctrl
argument to check whether the state must be modified on the host. The
update reuses speculative_store_bypass_update() so the ZEN-specific sibling
coordination can be reused.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/bootmem.c')
0 files changed, 0 insertions, 0 deletions