diff options
| author | Harry Moulton <harry.moulton@arm.com> | 2026-04-16 13:30:15 +0000 |
|---|---|---|
| committer | Andrew Turner <andrew@FreeBSD.org> | 2026-04-16 14:22:24 +0000 |
| commit | aa2d89cb4263f5d638b150efb4a2e6adab4ee9d6 (patch) | |
| tree | 4f07c6e83402b7bdb8523570da6074dc8f49503e | |
| parent | 6f9e9eba984f5c8d8a022c0ec99f844a911687fe (diff) | |
arm64: mte: add tagged memory attribute
Add the Normal-Tagged memory attribute introduced with MTE.
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D55948
| -rw-r--r-- | sys/arm64/arm64/locore.S | 3 | ||||
| -rw-r--r-- | sys/arm64/arm64/pmap.c | 3 | ||||
| -rw-r--r-- | sys/arm64/include/vm.h | 3 |
3 files changed, 7 insertions, 2 deletions
diff --git a/sys/arm64/arm64/locore.S b/sys/arm64/arm64/locore.S index 4c8e0c680321..c86f98da55a8 100644 --- a/sys/arm64/arm64/locore.S +++ b/sys/arm64/arm64/locore.S @@ -1134,7 +1134,8 @@ mair: MAIR_ATTR(MAIR_NORMAL_NC, VM_MEMATTR_UNCACHEABLE) | \ MAIR_ATTR(MAIR_NORMAL_WB, VM_MEMATTR_WRITE_BACK) | \ MAIR_ATTR(MAIR_NORMAL_WT, VM_MEMATTR_WRITE_THROUGH) | \ - MAIR_ATTR(MAIR_DEVICE_nGnRE, VM_MEMATTR_DEVICE_nGnRE) + MAIR_ATTR(MAIR_DEVICE_nGnRE, VM_MEMATTR_DEVICE_nGnRE) | \ + MAIR_ATTR(MAIR_NORMAL_TG, VM_MEMATTR_TAGGED) tcr: #if PAGE_SIZE == PAGE_SIZE_4K #define TCR_TG (TCR_TG1_4K | TCR_TG0_4K) diff --git a/sys/arm64/arm64/pmap.c b/sys/arm64/arm64/pmap.c index a23905994846..5017b5f63c4d 100644 --- a/sys/arm64/arm64/pmap.c +++ b/sys/arm64/arm64/pmap.c @@ -10015,6 +10015,9 @@ sysctl_kmaps_dump(struct sbuf *sb, struct pmap_kernel_map_range *range, case ATTR_S1_IDX(VM_MEMATTR_WRITE_THROUGH): mode = "WT"; break; + case ATTR_S1_IDX(VM_MEMATTR_TAGGED): + mode = "TAGGED"; + break; default: printf( "%s: unknown memory type %x for range 0x%016lx-0x%016lx\n", diff --git a/sys/arm64/include/vm.h b/sys/arm64/include/vm.h index e03e615bb841..4d9f2860f654 100644 --- a/sys/arm64/include/vm.h +++ b/sys/arm64/include/vm.h @@ -33,7 +33,8 @@ #define VM_MEMATTR_WRITE_BACK 2 #define VM_MEMATTR_WRITE_THROUGH 3 #define VM_MEMATTR_DEVICE_nGnRE 4 -#define VM_MEMATTR_END (VM_MEMATTR_DEVICE_nGnRE + 1) +#define VM_MEMATTR_TAGGED 5 +#define VM_MEMATTR_END (VM_MEMATTR_TAGGED + 1) #define VM_MEMATTR_DEVICE VM_MEMATTR_DEVICE_nGnRE #define VM_MEMATTR_DEVICE_NP VM_MEMATTR_DEVICE_nGnRnE |