From: Yeoreum Yun <yeoreum.yun@arm.com>
To: catalin.marinas@arm.com, will@kernel.org, broonie@kernel.org,
anshuman.khandual@arm.com, joey.gouly@arm.com, maz@kernel.org,
oliver.upton@linux.dev, frederic@kernel.org, james.morse@arm.com,
hardevsinh.palaniya@siliconsignals.io,
shameerali.kolothum.thodi@huawei.com, huangxiaojia2@huawei.com,
mark.rutland@arm.com, samuel.holland@sifive.com,
palmer@rivosinc.com, charlie@rivosinc.com,
thiago.bauermann@linaro.org, bgray@linux.ibm.com,
tglx@linutronix.de, puranjay@kernel.org, david@redhat.com,
yang@os.amperecomputing.com, mbenes@suse.cz,
joel.granados@kernel.org
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, nd@arm.com,
Yeoreum Yun <yeoreum.yun@arm.com>
Subject: [PATCH 2/3] prtcl: introduce PR_MTE_STORE_ONLY
Date: Thu, 3 Apr 2025 15:27:06 +0100 [thread overview]
Message-ID: <20250403142707.26397-3-yeoreum.yun@arm.com> (raw)
In-Reply-To: <20250403142707.26397-1-yeoreum.yun@arm.com>
PR_MTE_STORE_ONLY is used to restrict the MTE tag check for store
opeartion only.
Signed-off-by: Yeoreum Yun <yeoreum.yun@arm.com>
---
include/uapi/linux/prctl.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/uapi/linux/prctl.h b/include/uapi/linux/prctl.h
index 15c18ef4eb11..83ac566251d8 100644
--- a/include/uapi/linux/prctl.h
+++ b/include/uapi/linux/prctl.h
@@ -244,6 +244,8 @@ struct prctl_mm_map {
# define PR_MTE_TAG_MASK (0xffffUL << PR_MTE_TAG_SHIFT)
/* Unused; kept only for source compatibility */
# define PR_MTE_TCF_SHIFT 1
+/* MTE tag check store only */
+# define PR_MTE_STORE_ONLY (1UL << 19)
/* RISC-V pointer masking tag length */
# define PR_PMLEN_SHIFT 24
# define PR_PMLEN_MASK (0x7fUL << PR_PMLEN_SHIFT)
--
LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}
next prev parent reply other threads:[~2025-04-03 14:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-03 14:27 [PATCH 0/3] support FEAT_MTE_STORE_ONLY feature Yeoreum Yun
2025-04-03 14:27 ` [PATCH 1/3] arm64/feature: add MTE_STORE_ONLY feature Yeoreum Yun
2025-04-03 15:30 ` Mark Brown
2025-04-03 17:39 ` Yeoreum Yun
2025-04-03 14:27 ` Yeoreum Yun [this message]
2025-04-03 14:27 ` [PATCH 3/3] arm64/kernel: support store-only mte tag check Yeoreum Yun
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20250403142707.26397-3-yeoreum.yun@arm.com \
--to=yeoreum.yun@arm.com \
--cc=anshuman.khandual@arm.com \
--cc=bgray@linux.ibm.com \
--cc=broonie@kernel.org \
--cc=catalin.marinas@arm.com \
--cc=charlie@rivosinc.com \
--cc=david@redhat.com \
--cc=frederic@kernel.org \
--cc=hardevsinh.palaniya@siliconsignals.io \
--cc=huangxiaojia2@huawei.com \
--cc=james.morse@arm.com \
--cc=joel.granados@kernel.org \
--cc=joey.gouly@arm.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=maz@kernel.org \
--cc=mbenes@suse.cz \
--cc=nd@arm.com \
--cc=oliver.upton@linux.dev \
--cc=palmer@rivosinc.com \
--cc=puranjay@kernel.org \
--cc=samuel.holland@sifive.com \
--cc=shameerali.kolothum.thodi@huawei.com \
--cc=tglx@linutronix.de \
--cc=thiago.bauermann@linaro.org \
--cc=will@kernel.org \
--cc=yang@os.amperecomputing.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®