diff options
| author | Meijing Zhao <zhaomeijing@lixiang.com> | 2026-09-02 14:45:08 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-10-08 22:54:29 -0700 |
| commit | 4c770a1ca293b56d77d6375d534f128b7fc9b774 (patch) | |
| tree | b9408fd681f733698a6129cc87dde764dc062f6b /include/trace | |
| parent | fbd3c33ceddb79f48ef8b55245fa4288ea752bc5 (diff) | |
mm: trace: decode arm64 and sparc64 VM_ARCH_1 flags
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>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/mmflags.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/trace/events/mmflags.h b/include/trace/events/mmflags.h index 935893e5ea53..02caeaf359ab 100644 --- a/include/trace/events/mmflags.h +++ b/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 |