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Subject[PATCH v2 0/8] x86/irq: trap and interrupt cleanups
Date
From: "H. Peter Anvin (Intel)" <hpa@zytor.com>

A collection of trap/interrupt-related patches, almost all
cleanups. It does remove a modest amount of code (39 lines.) The only
patches that should have any possible effect at all are:

7/8 - 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.

8/8 - x86/irq: merge and functonalize common code in DECLARE/DEFINE_IDTENTRY_*

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().

This replaces a lot of macros with inline functions, which
required some amount of adjusting types in various places,
they should have no effect.

The reason for unification is mainly to avoid the possibility
of inadvertent divergence rather than the rather modest amount
of code, but it does remove 25 lines of code.

---
1/8 x86/irq: merge and functionalize common code in DECLARE/DEFINE_IDTENTRY_*
2/8 x86/irq: WARN_ONCE() if irq_move_cleanup is called on a pending interrupt
3/8 x86/kexec: set_[gi]dt() -> native_[gi]dt_invalidate() in machine_kexec_*.c
4/8 x86/desc: add native_[ig]dt_invalidate() to <asm/desc.h>
5/8 x86/idt: remove address argument to idt_invalidate()
6/8 x86/irq: remove unused vectors from <asm/irq_vectors.h>
7/8 x86/irqvector: add NR_EXTERNAL_VECTORS and NR_SYSTEM_VECTORS
8/8 x86/traps: add X86_NR_HW_TRAPS to <asm/trapnr.h>

arch/x86/entry/common.c | 5 +-
arch/x86/include/asm/desc.h | 17 ++-
arch/x86/include/asm/idtentry.h | 174 +++++++++++++++----------------
arch/x86/include/asm/irq_stack.h | 73 +++++--------
arch/x86/include/asm/irq_vectors.h | 7 +-
arch/x86/include/asm/trapnr.h | 1 +
arch/x86/kernel/apic/apic.c | 2 +-
arch/x86/kernel/apic/vector.c | 5 +
arch/x86/kernel/idt.c | 5 +-
arch/x86/kernel/irq.c | 1 +
arch/x86/kernel/machine_kexec_32.c | 15 +--
arch/x86/kernel/machine_kexec_64.c | 33 +-----
arch/x86/kernel/reboot.c | 2 +-
arch/x86/kernel/sev-es.c | 6 +-
arch/x86/kernel/traps.c | 2 +-
tools/arch/x86/include/asm/irq_vectors.h | 7 +-
16 files changed, 158 insertions(+), 197 deletions(-)

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