* [merged mm-stable] mm-trace-decode-arm64-and-sparc64-vm_arch_1-flags.patch removed from -mm tree
@ 2026-10-09 5:56 Andrew Morton
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From: Andrew Morton @ 2026-10-09 5:56 UTC (permalink / raw)
To: mm-commits, rostedt, mhiramat, mathieu.desnoyers, ljs,
zhaomeijing, akpm
The quilt patch titled
Subject: mm: trace: decode arm64 and sparc64 VM_ARCH_1 flags
has been removed from the -mm tree. Its filename was
mm-trace-decode-arm64-and-sparc64-vm_arch_1-flags.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Meijing Zhao <zhaomeijing@lixiang.com>
Subject: mm: trace: decode arm64 and sparc64 VM_ARCH_1 flags
Date: Wed, 2 Sep 2026 14:45:08 +0800
Patch series "mm: trace: decode architecture-specific VMA flags", v2.
show_vma_flags(), which is used by VMA tracepoints and %pGv, names generic
VM_* bits but does not fully decode architecture-specific flag positions.
As a result, trace output and VMA dumps can show a generic "arch_1" name
or a raw hexadecimal value instead of the meaning assigned by the target
architecture.
This series adds symbolic names for the arm64 and sparc64 meanings of
VM_ARCH_1, arm64 MTE flags, user shadow stack flags, and protection-key
encoding bits under their corresponding configuration guards.
This patch (of 3):
The VM_ARCH_1 bit has architecture-specific meanings. show_vma_flags(),
which is used by VMA tracepoints and %pGv, already reports the powerpc,
parisc and no-MMU meanings, but falls back to the generic "arch_1" name on
arm64 and sparc64.
Report VM_ARM64_BTI as "bti" and VM_SPARC_ADI as "adi" so trace output and
%pGv dumps expose the actual architecture-specific state.
Link: https://lore.kernel.org/cover.1788330432.git.zhaomeijing@lixiang.com
Link: https://lore.kernel.org/bcf0fea58240c4b6daa253739683ed7709e42fbb.1788330432.git.zhaomeijing@lixiang.com
Signed-off-by: Meijing Zhao <zhaomeijing@lixiang.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
---
include/trace/events/mmflags.h | 4 ++++
1 file changed, 4 insertions(+)
--- a/include/trace/events/mmflags.h~mm-trace-decode-arm64-and-sparc64-vm_arch_1-flags
+++ a/include/trace/events/mmflags.h
@@ -168,6 +168,10 @@ IF_HAVE_PG_ARCH_3(arch_3)
#define __VM_ARCH_SPECIFIC_1 {VM_SAO, "sao" }
#elif defined(CONFIG_PARISC)
#define __VM_ARCH_SPECIFIC_1 {VM_GROWSUP, "growsup" }
+#elif defined(CONFIG_SPARC64)
+#define __VM_ARCH_SPECIFIC_1 {VM_SPARC_ADI, "adi" }
+#elif defined(CONFIG_ARM64)
+#define __VM_ARCH_SPECIFIC_1 {VM_ARM64_BTI, "bti" }
#elif !defined(CONFIG_MMU)
#define __VM_ARCH_SPECIFIC_1 {VM_MAPPED_COPY,"mappedcopy" }
#else
_
Patches currently in -mm which might be from zhaomeijing@lixiang.com are
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2026-10-09 5:56 [merged mm-stable] mm-trace-decode-arm64-and-sparc64-vm_arch_1-flags.patch removed from -mm tree Andrew Morton
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