| commit | 68240e9bb16d52f5bf2c88f5984374ac7c6939fa | |
| author | Marc Zyngier <marc.zyngier@arm.com> | |
| Fri, 20 Jul 2018 09:56:32 +0000 (20 10:56 +0100) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Sun, 22 Jul 2018 12:27:42 +0000 (22 14:27 +0200) | ||
| tree | 668ac73eff70d2c54936fd1617f68aea8165e9df | treesnapshot (tar.gz zip) |
| parent | 7b62e8503fbbf7702a55b1abbfdb2c290c96609e | commitdiff |
arm64: KVM: Add ARCH_WORKAROUND_2 support for guests
commit 55e3748e8902ff641e334226bdcb432f9a5d78d3 upstream.
In order to offer ARCH_WORKAROUND_2 support to guests, we need
a bit of infrastructure.
Let's add a flag indicating whether or not the guest uses
SSBD mitigation. Depending on the state of this flag, allow
KVM to disable ARCH_WORKAROUND_2 before entering the guest,
and enable it when exiting it.
Reviewed-by: Christoffer Dall <christoffer.dall@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 55e3748e8902ff641e334226bdcb432f9a5d78d3 upstream.
In order to offer ARCH_WORKAROUND_2 support to guests, we need
a bit of infrastructure.
Let's add a flag indicating whether or not the guest uses
SSBD mitigation. Depending on the state of this flag, allow
KVM to disable ARCH_WORKAROUND_2 before entering the guest,
and enable it when exiting it.
Reviewed-by: Christoffer Dall <christoffer.dall@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>