From: Dave Hansen <dave.hansen@intel.com>
To: Maciej Wieczor-Retman <maciej.wieczor-retman@intel.com>
Cc: hpa@zytor.com, hch@infradead.org,
nick.desaulniers+lkml@gmail.com, kuan-ying.lee@canonical.com,
masahiroy@kernel.org, samuel.holland@sifive.com,
mingo@redhat.com, corbet@lwn.net, ryabinin.a.a@gmail.com,
guoweikang.kernel@gmail.com, jpoimboe@kernel.org,
ardb@kernel.org, vincenzo.frascino@arm.com, glider@google.com,
kirill.shutemov@linux.intel.com, apopple@nvidia.com,
samitolvanen@google.com, kaleshsingh@google.com, jgross@suse.com,
andreyknvl@gmail.com, scott@os.amperecomputing.com,
tony.luck@intel.com, dvyukov@google.com,
pasha.tatashin@soleen.com, ziy@nvidia.com, broonie@kernel.org,
gatlin.newhouse@gmail.com, jackmanb@google.com,
wangkefeng.wang@huawei.com, thiago.bauermann@linaro.org,
tglx@linutronix.de, kees@kernel.org, akpm@linux-foundation.org,
jason.andryuk@amd.com, snovitoll@gmail.com, xin@zytor.com,
jan.kiszka@siemens.com, bp@alien8.de, rppt@kernel.org,
peterz@infradead.org, pankaj.gupta@amd.com, thuth@redhat.com,
andriy.shevchenko@linux.intel.com, joel.granados@kernel.org,
kbingham@kernel.org, nicolas@fjasle.eu, mark.rutland@arm.com,
surenb@google.com, catalin.marinas@arm.com, morbo@google.com,
justinstitt@google.com, ubizjak@gmail.com, jhubbard@nvidia.com,
urezki@gmail.com, dave.hansen@linux.intel.com, bhe@redhat.com,
luto@kernel.org, baohua@kernel.org, nathan@kernel.org,
will@kernel.org, brgerst@gmail.com, llvm@lists.linux.dev,
linux-mm@kvack.org, linux-doc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
kasan-dev@googlegroups.com, x86@kernel.org
Subject: Re: [PATCH v3 10/14] x86: Update the KASAN non-canonical hook
Date: Wed, 9 Apr 2025 11:29:30 -0700 [thread overview]
Message-ID: <fe8192a9-02ba-40c9-9ba9-8582547cd3f4@intel.com> (raw)
In-Reply-To: <ycsp2mypsnnwcvmogvbxgpmw7hia4y5rvywa2xbam7lbuhnbx6@adg6uaasx6ci>
On 4/9/25 07:34, Maciej Wieczor-Retman wrote:
> Yes, I like it more than just generating the addresses in the parenthesis. What
> do you think about this naming? KASAN prefix and [k/u]addr since it's not really
> the lowest/highest address in the whole LA, just in this KASAN compiler scheme.
> And I changed 1<<56 to 2<<56 so it generates 0xFE00000000000000 instead of
> 0xFF00000000000000.
>
> #define KASAN_HIGHEST_KADDR (void *)0xFFFFFFFFFFFFFFFF
> #define KASAN_LOWEST_KADDR (void *)(KASAN_HIGHEST_KADDR - \
> (2<<56) + 1)
> #define KASAN_HIGHEST_UADDR (void *)0x7FFFFFFFFFFFFFFF
> #define KASAN_LOWEST_UADDR (void *)(KASAN_HIGHEST_UADDR - \
> (2<<56) + 1)
Yes, that is much better.
next prev parent reply other threads:[~2025-04-09 18:29 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-04 13:14 [PATCH v3 00/14] kasan: x86: arm64: KASAN tag-based mode for x86 Maciej Wieczor-Retman
2025-04-04 13:14 ` [PATCH v3 01/14] kasan: sw_tags: Use arithmetic shift for shadow computation Maciej Wieczor-Retman
2025-04-04 13:14 ` [PATCH v3 02/14] kasan: sw_tags: Support tag widths less than 8 bits Maciej Wieczor-Retman
2025-04-04 13:14 ` [PATCH v3 03/14] x86: Add arch specific kasan functions Maciej Wieczor-Retman
2025-04-04 16:06 ` Dave Hansen
2025-04-09 7:16 ` Maciej Wieczor-Retman
2025-04-04 13:14 ` [PATCH v3 04/14] kasan: arm64: x86: Make special tags arch specific Maciej Wieczor-Retman
2025-04-04 13:14 ` [PATCH v3 05/14] x86: Reset tag for virtual to physical address conversions Maciej Wieczor-Retman
2025-04-04 16:42 ` Dave Hansen
2025-04-09 7:36 ` Maciej Wieczor-Retman
2025-04-04 13:14 ` [PATCH v3 06/14] x86: Physical address comparisons in fill_p*d/pte Maciej Wieczor-Retman
2025-04-04 16:56 ` Dave Hansen
2025-04-09 7:49 ` Maciej Wieczor-Retman
2025-04-04 13:14 ` [PATCH v3 07/14] x86: KASAN raw shadow memory PTE init Maciej Wieczor-Retman
2025-04-04 13:14 ` [PATCH v3 08/14] x86: LAM initialization Maciej Wieczor-Retman
2025-04-04 13:14 ` [PATCH v3 09/14] x86: Minimal SLAB alignment Maciej Wieczor-Retman
2025-04-04 16:59 ` Dave Hansen
2025-04-09 12:49 ` Maciej Wieczor-Retman
2025-04-09 15:24 ` Dave Hansen
2025-04-04 13:14 ` [PATCH v3 10/14] x86: Update the KASAN non-canonical hook Maciej Wieczor-Retman
2025-04-04 17:37 ` Dave Hansen
2025-04-09 14:34 ` Maciej Wieczor-Retman
2025-04-09 18:29 ` Dave Hansen [this message]
2025-04-04 13:14 ` [PATCH v3 11/14] x86: Handle int3 for inline KASAN reports Maciej Wieczor-Retman
2025-04-04 17:55 ` Dave Hansen
2025-04-09 14:48 ` Maciej Wieczor-Retman
2025-04-04 13:14 ` [PATCH v3 12/14] kasan: Fix inline mode for x86 tag-based mode Maciej Wieczor-Retman
2025-04-04 13:14 ` [PATCH v3 13/14] mm: Unpoison pcpu chunks with base address tag Maciej Wieczor-Retman
2025-04-04 18:08 ` Dave Hansen
2025-04-09 16:32 ` Maciej Wieczor-Retman
2025-04-09 17:12 ` Dave Hansen
2025-04-04 13:14 ` [PATCH v3 14/14] x86: Make software tag-based kasan available Maciej Wieczor-Retman
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=fe8192a9-02ba-40c9-9ba9-8582547cd3f4@intel.com \
--to=dave.hansen@intel.com \
--cc=akpm@linux-foundation.org \
--cc=andreyknvl@gmail.com \
--cc=andriy.shevchenko@linux.intel.com \
--cc=apopple@nvidia.com \
--cc=ardb@kernel.org \
--cc=baohua@kernel.org \
--cc=bhe@redhat.com \
--cc=bp@alien8.de \
--cc=brgerst@gmail.com \
--cc=broonie@kernel.org \
--cc=catalin.marinas@arm.com \
--cc=corbet@lwn.net \
--cc=dave.hansen@linux.intel.com \
--cc=dvyukov@google.com \
--cc=gatlin.newhouse@gmail.com \
--cc=glider@google.com \
--cc=guoweikang.kernel@gmail.com \
--cc=hch@infradead.org \
--cc=hpa@zytor.com \
--cc=jackmanb@google.com \
--cc=jan.kiszka@siemens.com \
--cc=jason.andryuk@amd.com \
--cc=jgross@suse.com \
--cc=jhubbard@nvidia.com \
--cc=joel.granados@kernel.org \
--cc=jpoimboe@kernel.org \
--cc=justinstitt@google.com \
--cc=kaleshsingh@google.com \
--cc=kasan-dev@googlegroups.com \
--cc=kbingham@kernel.org \
--cc=kees@kernel.org \
--cc=kirill.shutemov@linux.intel.com \
--cc=kuan-ying.lee@canonical.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kbuild@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=llvm@lists.linux.dev \
--cc=luto@kernel.org \
--cc=maciej.wieczor-retman@intel.com \
--cc=mark.rutland@arm.com \
--cc=masahiroy@kernel.org \
--cc=mingo@redhat.com \
--cc=morbo@google.com \
--cc=nathan@kernel.org \
--cc=nick.desaulniers+lkml@gmail.com \
--cc=nicolas@fjasle.eu \
--cc=pankaj.gupta@amd.com \
--cc=pasha.tatashin@soleen.com \
--cc=peterz@infradead.org \
--cc=rppt@kernel.org \
--cc=ryabinin.a.a@gmail.com \
--cc=samitolvanen@google.com \
--cc=samuel.holland@sifive.com \
--cc=scott@os.amperecomputing.com \
--cc=snovitoll@gmail.com \
--cc=surenb@google.com \
--cc=tglx@linutronix.de \
--cc=thiago.bauermann@linaro.org \
--cc=thuth@redhat.com \
--cc=tony.luck@intel.com \
--cc=ubizjak@gmail.com \
--cc=urezki@gmail.com \
--cc=vincenzo.frascino@arm.com \
--cc=wangkefeng.wang@huawei.com \
--cc=will@kernel.org \
--cc=x86@kernel.org \
--cc=xin@zytor.com \
--cc=ziy@nvidia.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