diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2018-07-20 10:53:10 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-22 14:28:51 +0200 |
| commit | 805357aa65bbc419451fb9556968687c7fd1d2e1 (patch) | |
| tree | 635d37928233b9f5928c4d6b5bc816abfe2be9cb /virt | |
| parent | 0592871918f0acf369cec5c88de1fa76dbf2c1a2 (diff) | |
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>
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/arm/arm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c index 4aede98b92eb..d5f1d8364571 100644 --- a/virt/kvm/arm/arm.c +++ b/virt/kvm/arm/arm.c @@ -1411,6 +1411,10 @@ static int init_hyp_mode(void) } } + err = hyp_map_aux_data(); + if (err) + kvm_err("Cannot map host auxilary data: %d\n", err); + return 0; out_err: |