From: Ihor Solodrai <ihor.solodrai@linux.dev>
To: Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
Ingo Molnar <mingo@redhat.com>, Thomas Gleixner <tglx@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>,
Andrii Nakryiko <andrii@kernel.org>,
Andrey Ryabinin <ryabinin.a.a@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
"H . Peter Anvin" <hpa@zytor.com>,
Andrey Konovalov <andreyknvl@gmail.com>,
bpf@vger.kernel.org, kernel-team@meta.com,
kasan-dev@googlegroups.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v1 0/5] x86/cpu: Refactor identify_cpu()
Date: Fri, 3 Jul 2026 17:20:41 -0700 [thread overview]
Message-ID: <20260704002046.3859585-1-ihor.solodrai@linux.dev> (raw)
This series refactors identify_cpu() machinery on x86 and then
implements a fix for a bug when cpu capabilities are temporarily
cleared within an interruptable window. For more details and
discussion see the relevant bug report [1].
Suggested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
[1] https://lore.kernel.org/bpf/20260610175651.647515-1-ihor.solodrai@linux.dev/
Ihor Solodrai (5):
x86/cpu: Factor init_cpu_info() out of identify_cpu()
x86/cpu: Inline generic_identify() into identify_cpu()
x86/cpu: Introduce identify_cpu_32() helper
x86/cpu: Set X86_BUG_ESPFIX in identify_cpu_32()
x86/cpu: Don't reset boot CPU cpuinfo in identify_cpu()
arch/x86/kernel/cpu/common.c | 114 +++++++++++++++++++----------------
1 file changed, 61 insertions(+), 53 deletions(-)
--
2.54.0
next reply other threads:[~2026-07-04 0:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-04 0:20 Ihor Solodrai [this message]
2026-07-04 0:20 ` [PATCH v1 1/5] x86/cpu: Factor init_cpu_info() out of identify_cpu() Ihor Solodrai
2026-07-04 0:20 ` [PATCH v1 2/5] x86/cpu: Inline generic_identify() into identify_cpu() Ihor Solodrai
2026-07-04 0:20 ` [PATCH v1 3/5] x86/cpu: Introduce identify_cpu_32() helper Ihor Solodrai
2026-07-04 0:20 ` [PATCH v1 4/5] x86/cpu: Set X86_BUG_ESPFIX in identify_cpu_32() Ihor Solodrai
2026-07-04 0:20 ` [PATCH v1 5/5] x86/cpu: Don't reset boot CPU cpuinfo in identify_cpu() Ihor Solodrai
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