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Message-ID: <20240702132139.3332013-1-yosryahmed@google.com>
Date: Tue, 2 Jul 2024 13:21:36 +0000
From: Yosry Ahmed <yosryahmed@...gle.com>
To: x86@...nel.org
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>, "H. Peter Anvin" <hpa@...or.com>,
Andy Lutomirski <luto@...nel.org>, Peter Zijlstra <peterz@...radead.org>,
"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
Rick Edgecombe <rick.p.edgecombe@...el.com>, Andrew Morton <akpm@...ux-foundation.org>,
linux-mm@...ck.org, linux-kernel@...r.kernel.org,
Yosry Ahmed <yosryahmed@...gle.com>
Subject: [RESEND PATCH v3 0/3] x86/mm: LAM fixups and cleanups
This series has fixups and cleanups for LAM. Most importantly, patch 1
fixes a sycnhronization issue that may cause crashes of userspace
applications. This is a resend of v3, rebased on top of v6.10-rc6.
v3: https://lore.kernel.org/lkml/20240418012835.3360429-1-yosryahmed@google.com/
v2: https://lore.kernel.org/lkml/20240312155641.4003683-1-yosryahmed@google.com/
v1: https://lore.kernel.org/lkml/20240312035951.3535980-1-yosryahmed@google.com/
RFC: https://lore.kernel.org/lkml/20240307133916.3782068-1-yosryahmed@google.com/
Yosry Ahmed (3):
x86/mm: Use IPIs to synchronize LAM enablement
x86/mm: Fix LAM inconsistency during context switch
x86/mm: Cleanup prctl_enable_tagged_addr() nr_bits error checking
arch/x86/include/asm/mmu_context.h | 8 +++++++-
arch/x86/include/asm/tlbflush.h | 9 ++++-----
arch/x86/kernel/process_64.c | 25 ++++++++++++++++---------
arch/x86/mm/tlb.c | 15 ++++++++-------
4 files changed, 35 insertions(+), 22 deletions(-)
--
2.45.2.803.g4e1b14247a-goog
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