From: Andy Lutomirski <luto@kernel.org>
To: X86 ML <x86@kernel.org>
Cc: Borislav Petkov <bpetkov@suse.de>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Andy Lutomirski <luto@kernel.org>
Subject: [PATCH 0/4] More PCID fixes
Date: Sun, 17 Sep 2017 09:03:47 -0700 [thread overview]
Message-ID: <cover.1505663533.git.luto@kernel.org> (raw)
This fixes a 32-bit boot warning, a 32-bit boot oddity that seems
unsymtomatic right now, and a potential userspace corruption issue
across EFI calls if PCID is enabled.
With this series applied, the only remaining issue I'm aware of is
the paging-structure cache laziness problem.
I've tested SMP boot, suspend/resume, hotplug/unplug, and hibernate
on a 32-bit VM, a 64-bit VM, and a 64-bit laptop. (Except hibernate
on the laptop -- my laptop can't resume from hibernation on *any*
kernel due to a userspace (systemd? Fedora overall integration?)
issue.)
Andy Lutomirski (4):
x86/mm: Factor out CR3-building code
x86/mm/64: Stop using CR3.PCID == 0 in ASID-aware code
x86/mm/32: Move setup_clear_cpu_cap(X86_FEATURE_PCID) earlier
x86/mm/32: Load a sane CR3 before cpu_init() on secondary CPUs
arch/x86/include/asm/mmu_context.h | 32 ++++++++++++++++++++++++++++----
arch/x86/kernel/cpu/bugs.c | 8 --------
arch/x86/kernel/cpu/common.c | 8 ++++++++
arch/x86/kernel/smpboot.c | 13 +++++++------
arch/x86/mm/tlb.c | 11 +++++------
5 files changed, 48 insertions(+), 24 deletions(-)
--
2.13.5
next reply other threads:[~2017-09-17 16:03 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-17 16:03 Andy Lutomirski [this message]
2017-09-17 16:03 ` [PATCH 1/4] x86/mm: Factor out CR3-building code Andy Lutomirski
2017-09-17 18:18 ` [tip:x86/urgent] " tip-bot for Andy Lutomirski
2017-09-17 16:03 ` [PATCH 2/4] x86/mm/64: Stop using CR3.PCID == 0 in ASID-aware code Andy Lutomirski
2017-09-17 18:19 ` [tip:x86/urgent] " tip-bot for Andy Lutomirski
2017-09-17 16:03 ` [PATCH 3/4] x86/mm/32: Move setup_clear_cpu_cap(X86_FEATURE_PCID) earlier Andy Lutomirski
2017-09-17 18:19 ` [tip:x86/urgent] " tip-bot for Andy Lutomirski
2017-09-17 16:03 ` [PATCH 4/4] x86/mm/32: Load a sane CR3 before cpu_init() on secondary CPUs Andy Lutomirski
2017-09-17 18:19 ` [tip:x86/urgent] " tip-bot for Andy Lutomirski
2017-09-18 8:17 ` Paul Menzel
2017-09-20 12:52 ` Pavel Machek
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