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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(-)

             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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