| Message ID | 20200622080643.171651-2-maz@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | KVM/arm64: Enable PtrAuth on non-VHE KVM | expand |
On Mon, Jun 22, 2020 at 09:06:39AM +0100, Marc Zyngier wrote: > While initializing EL2, enable Address Authentication if detected > from EL1. We still use the EL1-provided keys though. > > Acked-by: Andrew Scull <ascull@google.com> > Signed-off-by: Marc Zyngier <maz@kernel.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Mark. > --- > arch/arm64/kvm/hyp-init.S | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/arch/arm64/kvm/hyp-init.S b/arch/arm64/kvm/hyp-init.S > index 6e6ed5581eed..1587d146726a 100644 > --- a/arch/arm64/kvm/hyp-init.S > +++ b/arch/arm64/kvm/hyp-init.S > @@ -104,6 +104,11 @@ alternative_else_nop_endif > */ > mov_q x4, (SCTLR_EL2_RES1 | (SCTLR_ELx_FLAGS & ~SCTLR_ELx_A)) > CPU_BE( orr x4, x4, #SCTLR_ELx_EE) > +alternative_if ARM64_HAS_ADDRESS_AUTH > + mov_q x5, (SCTLR_ELx_ENIA | SCTLR_ELx_ENIB | \ > + SCTLR_ELx_ENDA | SCTLR_ELx_ENDB) > + orr x4, x4, x5 > +alternative_else_nop_endif > msr sctlr_el2, x4 > isb > > -- > 2.27.0 >
diff --git a/arch/arm64/kvm/hyp-init.S b/arch/arm64/kvm/hyp-init.S index 6e6ed5581eed..1587d146726a 100644 --- a/arch/arm64/kvm/hyp-init.S +++ b/arch/arm64/kvm/hyp-init.S @@ -104,6 +104,11 @@ alternative_else_nop_endif */ mov_q x4, (SCTLR_EL2_RES1 | (SCTLR_ELx_FLAGS & ~SCTLR_ELx_A)) CPU_BE( orr x4, x4, #SCTLR_ELx_EE) +alternative_if ARM64_HAS_ADDRESS_AUTH + mov_q x5, (SCTLR_ELx_ENIA | SCTLR_ELx_ENIB | \ + SCTLR_ELx_ENDA | SCTLR_ELx_ENDB) + orr x4, x4, x5 +alternative_else_nop_endif msr sctlr_el2, x4 isb