Date: Thu, 16 Apr 2026 14:23:06 +0000 From: Andrew Turner <andrew@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Cc: Harry Moulton <harry.moulton@arm.com> Subject: git: aa2d89cb4263 - main - arm64: mte: add tagged memory attribute Message-ID: <69e0f0ca.189dc.719cb132@gitrepo.freebsd.org>
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The branch main has been updated by andrew: URL: https://cgit.FreeBSD.org/src/commit/?id=aa2d89cb4263f5d638b150efb4a2e6adab4ee9d6 commit aa2d89cb4263f5d638b150efb4a2e6adab4ee9d6 Author: Harry Moulton <harry.moulton@arm.com> AuthorDate: 2026-04-16 13:30:15 +0000 Commit: Andrew Turner <andrew@FreeBSD.org> CommitDate: 2026-04-16 14:22:24 +0000 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 --- sys/arm64/arm64/locore.S | 3 ++- sys/arm64/arm64/pmap.c | 3 +++ 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_nGnRnEhome | help
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