From: Dave Hansen <dave.hansen@intel.com>
To: Maciej Wieczor-Retman <maciej.wieczor-retman@intel.com>,
hpa@zytor.com, hch@infradead.org,
nick.desaulniers+lkml@gmail.com, kuan-ying.lee@canonical.com,
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pasha.tatashin@soleen.com, ziy@nvidia.com, broonie@kernel.org,
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will@kernel.org, brgerst@gmail.com
Cc: llvm@lists.linux.dev, linux-mm@kvack.org,
linux-doc@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
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kasan-dev@googlegroups.com, x86@kernel.org
Subject: Re: [PATCH v3 09/14] x86: Minimal SLAB alignment
Date: Fri, 4 Apr 2025 09:59:49 -0700 [thread overview]
Message-ID: <ceade208-c585-48e7-aafe-4599b1a06b81@intel.com> (raw)
In-Reply-To: <173d99afea37321e76e9380b49bd5966be8db849.1743772053.git.maciej.wieczor-retman@intel.com>
On 4/4/25 06:14, Maciej Wieczor-Retman wrote:
> Adjust x86 minimal SLAB alignment to match KASAN granularity size. In
> tag-based mode the size changes to 16 bytes so the value needs to be 16.
I feel like we need a _bit_ of a discussion of the impact here. We are,
after all, trying to get this feature into shape so that it can be used
more widely outside of just debugging environments.
What's the impact of this in a production environment?
next prev parent reply other threads:[~2025-04-04 17:00 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 [this message]
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
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
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