From: "H. Peter Anvin" <hpa@zytor.com>
To: Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Borislav Petkov <bp@alien8.de>, Andy Lutomirski <luto@kernel.org>
Cc: Steve Wahl <steve.wahl@hpe.com>,
Mike Travis <mike.travis@hpe.com>,
Dimitri Sivanich <dimitri.sivanich@hpe.com>,
Russ Anderson <russ.anderson@hpe.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"H. Peter Anvin (Intel)" <hpa@zytor.com>
Subject: [PATCH 0/6] x86/irq: trap and interrupt cleanups
Date: Mon, 10 May 2021 17:55:25 -0700 [thread overview]
Message-ID: <20210511005531.1065536-1-hpa@zytor.com> (raw)
From: "H. Peter Anvin (Intel)" <hpa@zytor.com>
A collection of trap/interrupt-related patches, almost all
cleanups. The only patches that should have any possible effect at all
are:
4/6 - x86/irq: merge common code in DEFINE_IDTENTRY_SYSVEC[_SIMPLE]
This patch reverses kvm_set_cpu_l1tf_flush_l1d() and
__irq_enter_raw() in DEFINE_IDTENTRY_SYSVEC_SIMPLE() in order
to be able to unify the code with DEFINE_IDTENTRY_SYSVEC().
The reason for unification is mainly to avoid the possibility
of inadvertent divergence rather than the rather modest amount
of code.
5/6 - x86/irq: WARN_ONCE() if irq_move_cleanup is called on a pending interrupt
This condition is believed to be impossible after many
improvements to the IRQ vector allocation code since this
function was written. Per discussion with tglx, add a
WARN_ONCE() if this happens as a first step towards excising
this hack.
---
x86/traps: add X86_NR_HW_TRAPS to <asm/trapnr.h>
x86/irqvector: add NR_EXTERNAL_VECTORS and NR_SYSTEM_VECTORS
x86/idt: remove address argument to idt_invalidate()
x86/irq: merge common code in DEFINE_IDTENTRY_SYSVEC[_SIMPLE]
x86/irq: WARN_ONCE() if irq_move_cleanup is called on a pending interrupt
x86/irq: remove unused vectors from <asm/irq_vectors.h>
arch/x86/include/asm/desc.h | 2 +-
arch/x86/include/asm/idtentry.h | 39 +++++++++++++++++---------------
arch/x86/include/asm/irq_vectors.h | 7 ++++--
arch/x86/include/asm/trapnr.h | 1 +
arch/x86/kernel/apic/vector.c | 5 ++++
arch/x86/kernel/idt.c | 5 ++--
arch/x86/kernel/machine_kexec_32.c | 4 ++--
arch/x86/kernel/reboot.c | 2 +-
tools/arch/x86/include/asm/irq_vectors.h | 7 ++++--
9 files changed, 43 insertions(+), 29 deletions(-)
next reply other threads:[~2021-05-11 0:56 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-11 0:55 H. Peter Anvin [this message]
2021-05-11 0:55 ` [PATCH 1/6] x86/traps: add X86_NR_HW_TRAPS to <asm/trapnr.h> H. Peter Anvin
2021-05-14 22:53 ` Andy Lutomirski
2021-05-11 0:55 ` [PATCH 2/6] x86/irqvector: add NR_EXTERNAL_VECTORS and NR_SYSTEM_VECTORS H. Peter Anvin
2021-05-14 22:53 ` Andy Lutomirski
2021-05-11 0:55 ` [PATCH 3/6] x86/idt: remove address argument to idt_invalidate() H. Peter Anvin
2021-05-11 4:37 ` kernel test robot
2021-05-11 14:14 ` Thomas Gleixner
2021-05-11 14:43 ` H. Peter Anvin
2021-05-11 0:55 ` [PATCH 4/6] x86/irq: merge common code in DEFINE_IDTENTRY_SYSVEC[_SIMPLE] H. Peter Anvin
2021-05-11 14:22 ` Thomas Gleixner
2021-05-11 17:44 ` H. Peter Anvin
2021-05-12 8:38 ` Ingo Molnar
2021-05-12 18:00 ` H. Peter Anvin
2021-05-12 18:40 ` Ingo Molnar
2021-05-11 0:55 ` [PATCH 5/6] x86/irq: WARN_ONCE() if irq_move_cleanup is called on a pending interrupt H. Peter Anvin
2021-05-11 14:23 ` Thomas Gleixner
2021-05-11 15:55 ` H. Peter Anvin
2021-05-11 0:55 ` [PATCH 6/6] x86/irq: remove unused vectors from <asm/irq_vectors.h> H. Peter Anvin
2021-05-11 17:04 ` Steve Wahl
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