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arm64: Add missing APTable and TCR_ELx.HPD masks

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Although Linux doesn't make use of hierarchical permissions (TFFT!),
KVM needs to know where the various bits related to this feature
live in the TCR_ELx registers as well as in the page tables.

Add the missing bits.

Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Marc Zyngier 2024-06-18 10:09:18 +01:00
parent 69231a6fcb
commit 4abc783e47
2 changed files with 10 additions and 0 deletions
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1
arch/arm64/include/asm/kvm_arm.h
View File

@ -107,6 +107,7 @@
/* TCR_EL2 Registers bits */
#define TCR_EL2_DS (1UL << 32)
#define TCR_EL2_RES1 ((1U << 31) | (1 << 23))
#define TCR_EL2_HPD (1 << 24)
#define TCR_EL2_TBI (1 << 20)
#define TCR_EL2_PS_SHIFT 16
#define TCR_EL2_PS_MASK (7 << TCR_EL2_PS_SHIFT)

9
arch/arm64/include/asm/pgtable-hwdef.h
View File

@ -204,6 +204,11 @@
*/
#define PTE_S2_MEMATTR(t) (_AT(pteval_t, (t)) << 2)
/*
* Hierarchical permission for Stage-1 tables
*/
#define S1_TABLE_AP (_AT(pmdval_t, 3) << 61)
/*
* Highest possible physical address supported.
*/
@ -298,6 +303,10 @@
#define TCR_TBI1 (UL(1) << 38)
#define TCR_HA (UL(1) << 39)
#define TCR_HD (UL(1) << 40)
#define TCR_HPD0_SHIFT 41
#define TCR_HPD0 (UL(1) << TCR_HPD0_SHIFT)
#define TCR_HPD1_SHIFT 42
#define TCR_HPD1 (UL(1) << TCR_HPD1_SHIFT)
#define TCR_TBID0 (UL(1) << 51)
#define TCR_TBID1 (UL(1) << 52)
#define TCR_NFD0 (UL(1) << 53)