diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2014-01-14 18:00:55 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-05-17 09:53:51 -0700 |
| commit | a2e16cab79cce909aa2995ad729d7518e0b5bfa7 (patch) | |
| tree | bb292c1caec9bdc9c4d948f1a885444eb45dbc39 /arch/arm64/include | |
| parent | 30604b7e1f45ab263832a1ee49635fb7a59860e2 (diff) | |
arm64: KVM: trap VM system registers until MMU and caches are ON
commit 4d44923b17bff283c002ed961373848284aaff1b upstream.
In order to be able to detect the point where the guest enables
its MMU and caches, trap all the VM related system registers.
Once we see the guest enabling both the MMU and the caches, we
can go back to a saner mode of operation, which is to leave these
registers in complete control of the guest.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Cc: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/kvm_arm.h | 3 | ||||
| -rw-r--r-- | arch/arm64/include/asm/kvm_asm.h | 3 |
2 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h index 0eb398655378..00fbaa75dc7b 100644 --- a/arch/arm64/include/asm/kvm_arm.h +++ b/arch/arm64/include/asm/kvm_arm.h @@ -62,6 +62,7 @@ * RW: 64bit by default, can be overriden for 32bit VMs * TAC: Trap ACTLR * TSC: Trap SMC + * TVM: Trap VM ops (until M+C set in SCTLR_EL1) * TSW: Trap cache operations by set/way * TWE: Trap WFE * TWI: Trap WFI @@ -74,7 +75,7 @@ * SWIO: Turn set/way invalidates into set/way clean+invalidate */ #define HCR_GUEST_FLAGS (HCR_TSC | HCR_TSW | HCR_TWE | HCR_TWI | HCR_VM | \ - HCR_BSU_IS | HCR_FB | HCR_TAC | \ + HCR_TVM | HCR_BSU_IS | HCR_FB | HCR_TAC | \ HCR_AMO | HCR_IMO | HCR_FMO | \ HCR_SWIO | HCR_TIDCP | HCR_RW) #define HCR_VIRT_EXCP_MASK (HCR_VA | HCR_VI | HCR_VF) diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h index b25763bc0ec4..9fcd54b1e16d 100644 --- a/arch/arm64/include/asm/kvm_asm.h +++ b/arch/arm64/include/asm/kvm_asm.h @@ -79,7 +79,8 @@ #define c13_TID_URW (TPIDR_EL0 * 2) /* Thread ID, User R/W */ #define c13_TID_URO (TPIDRRO_EL0 * 2)/* Thread ID, User R/O */ #define c13_TID_PRIV (TPIDR_EL1 * 2) /* Thread ID, Privileged */ -#define c10_AMAIR (AMAIR_EL1 * 2) /* Aux Memory Attr Indirection Reg */ +#define c10_AMAIR0 (AMAIR_EL1 * 2) /* Aux Memory Attr Indirection Reg */ +#define c10_AMAIR1 (c10_AMAIR0 + 1)/* Aux Memory Attr Indirection Reg */ #define c14_CNTKCTL (CNTKCTL_EL1 * 2) /* Timer Control Register (PL1) */ #define NR_CP15_REGS (NR_SYS_REGS * 2) |