Messages in this thread | | | From | "H. Peter Anvin" <> | Subject | [PATCH 0/6] x86/irq: trap and interrupt cleanups | Date | Mon, 10 May 2021 17:55:25 -0700 |
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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(-)
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