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[v4,05/12] KVM: arm64: Add new (V)TCR_EL2 field definitions for FEAT_LPA2

Message ID 20231009185008.3803879-6-ryan.roberts@arm.com (mailing list archive)
State New, archived
Headers show
Series KVM: arm64: Support FEAT_LPA2 at hyp s1 and vm s2 | expand

Commit Message

Ryan Roberts Oct. 9, 2023, 6:50 p.m. UTC 
As per Arm ARM (0487I.a), (V)TCR_EL2.DS fields control whether 52 bit
input and output addresses are supported on 4K and 16K page size
configurations when FEAT_LPA2 is known to have been implemented.

This adds these field definitions which will be used by KVM when
FEAT_LPA2 is enabled.

Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
---
 arch/arm64/include/asm/kvm_arm.h | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h
index 5882b2415596..e370e015d7c8 100644
--- a/arch/arm64/include/asm/kvm_arm.h
+++ b/arch/arm64/include/asm/kvm_arm.h
@@ -106,6 +106,7 @@ 
 #define HCRX_HOST_FLAGS (HCRX_EL2_MSCEn | HCRX_EL2_TCR2En)
 
 /* TCR_EL2 Registers bits */
+#define TCR_EL2_DS		(1UL << 32)
 #define TCR_EL2_RES1		((1U << 31) | (1 << 23))
 #define TCR_EL2_TBI		(1 << 20)
 #define TCR_EL2_PS_SHIFT	16
@@ -120,6 +121,7 @@ 
 			 TCR_EL2_ORGN0_MASK | TCR_EL2_IRGN0_MASK | TCR_EL2_T0SZ_MASK)
 
 /* VTCR_EL2 Registers bits */
+#define VTCR_EL2_DS		TCR_EL2_DS
 #define VTCR_EL2_RES1		(1U << 31)
 #define VTCR_EL2_HD		(1 << 22)
 #define VTCR_EL2_HA		(1 << 21)