From: Andrey Konovalov <andreyknvl@google.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
LKML <linux-kernel@vger.kernel.org>,
kasan-dev <kasan-dev@googlegroups.com>,
Will Deacon <will@kernel.org>,
Dmitry Vyukov <dvyukov@google.com>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
Alexander Potapenko <glider@google.com>,
Marco Elver <elver@google.com>,
Evgenii Stepanov <eugenis@google.com>,
Branislav Rankov <Branislav.Rankov@arm.com>,
Andrey Konovalov <andreyknvl@gmail.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>
Subject: Re: [PATCH v16 0/9] arm64: ARMv8.5-A: MTE: Add async mode support
Date: Tue, 23 Mar 2021 16:08:05 +0100 [thread overview]
Message-ID: <CAAeHK+w+pHtKNwxz5Scdp9_48jmSLfeBqBGqKQT+-aFO486GzA@mail.gmail.com> (raw)
In-Reply-To: <20210318185607.GD10758@arm.com>
On Thu, Mar 18, 2021 at 7:56 PM Catalin Marinas <catalin.marinas@arm.com> wrote:
>
> On Mon, Mar 15, 2021 at 01:20:10PM +0000, Vincenzo Frascino wrote:
> > This patchset implements the asynchronous mode support for ARMv8.5-A
> > Memory Tagging Extension (MTE), which is a debugging feature that allows
> > to detect with the help of the architecture the C and C++ programmatic
> > memory errors like buffer overflow, use-after-free, use-after-return, etc.
> >
> > MTE is built on top of the AArch64 v8.0 virtual address tagging TBI
> > (Top Byte Ignore) feature and allows a task to set a 4 bit tag on any
> > subset of its address space that is multiple of a 16 bytes granule. MTE
> > is based on a lock-key mechanism where the lock is the tag associated to
> > the physical memory and the key is the tag associated to the virtual
> > address.
> > When MTE is enabled and tags are set for ranges of address space of a task,
> > the PE will compare the tag related to the physical memory with the tag
> > related to the virtual address (tag check operation). Access to the memory
> > is granted only if the two tags match. In case of mismatch the PE will raise
> > an exception.
> >
> > The exception can be handled synchronously or asynchronously. When the
> > asynchronous mode is enabled:
> > - Upon fault the PE updates the TFSR_EL1 register.
> > - The kernel detects the change during one of the following:
> > - Context switching
> > - Return to user/EL0
> > - Kernel entry from EL1
> > - Kernel exit to EL1
> > - If the register has been updated by the PE the kernel clears it and
> > reports the error.
> >
> > The series is based on linux-next/akpm.
>
> Andrew, could you please pick these patches up via the mm tree? They
> depend on kasan patches already queued.
Hi Andrew,
Looks like these patches have reached a stable state.
Could you please pick them up into mm targeting 5.13?
Thanks!
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-03-23 15:10 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-15 13:20 [PATCH v16 0/9] arm64: ARMv8.5-A: MTE: Add async mode support Vincenzo Frascino
2021-03-15 13:20 ` [PATCH v16 1/9] arm64: mte: Add asynchronous " Vincenzo Frascino
2021-03-15 13:20 ` [PATCH v16 2/9] kasan: Add KASAN mode kernel parameter Vincenzo Frascino
2021-03-15 13:20 ` [PATCH v16 3/9] arm64: mte: Drop arch_enable_tagging() Vincenzo Frascino
2021-03-15 13:20 ` [PATCH v16 4/9] kasan: Add report for async mode Vincenzo Frascino
2021-03-15 13:20 ` [PATCH v16 5/9] arm64: mte: Enable TCO in functions that can read beyond buffer limits Vincenzo Frascino
2021-03-15 13:20 ` [PATCH v16 6/9] arm64: mte: Conditionally compile mte_enable_kernel_*() Vincenzo Frascino
2021-03-15 18:41 ` Catalin Marinas
2021-03-16 10:06 ` Vincenzo Frascino
2021-03-15 13:20 ` [PATCH v16 7/9] arm64: mte: Enable async tag check fault Vincenzo Frascino
2021-03-15 13:20 ` [PATCH v16 8/9] arm64: mte: Report async tag faults before suspend Vincenzo Frascino
2021-03-15 13:20 ` [PATCH v16 9/9] kasan, arm64: tests supports for HW_TAGS async mode Vincenzo Frascino
2021-03-18 18:56 ` [PATCH v16 0/9] arm64: ARMv8.5-A: MTE: Add async mode support Catalin Marinas
2021-03-18 19:03 ` Andrey Konovalov
2021-03-23 15:08 ` Andrey Konovalov [this message]
2021-04-11 13:02 ` Catalin Marinas
2021-04-13 9:47 ` Catalin Marinas
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=CAAeHK+w+pHtKNwxz5Scdp9_48jmSLfeBqBGqKQT+-aFO486GzA@mail.gmail.com \
--to=andreyknvl@google.com \
--cc=Branislav.Rankov@arm.com \
--cc=akpm@linux-foundation.org \
--cc=andreyknvl@gmail.com \
--cc=aryabinin@virtuozzo.com \
--cc=catalin.marinas@arm.com \
--cc=dvyukov@google.com \
--cc=elver@google.com \
--cc=eugenis@google.com \
--cc=glider@google.com \
--cc=kasan-dev@googlegroups.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=lorenzo.pieralisi@arm.com \
--cc=vincenzo.frascino@arm.com \
--cc=will@kernel.org \
/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;
as well as URLs for NNTP newsgroup(s).