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x86: irq: unconditionally define KVM interrupt vectors

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Unlike arch/x86/kernel/idt.c, FRED support chose to remove the #ifdefs
from the .c files and concentrate them in the headers, where unused
handlers are #define'd to NULL.

However, the constants for KVM's 3 posted interrupt vectors are still
defined conditionally in irq_vectors.h.  In the tree that FRED support was
developed on, this is innocuous because CONFIG_HAVE_KVM was effectively
always set.  With the cleanups that recently went into the KVM tree to
remove CONFIG_HAVE_KVM, the conditional became IS_ENABLED(CONFIG_KVM).
This causes a linux-next compilation failure in FRED code, when
CONFIG_KVM=n.

In preparation for the merging of FRED in Linux 6.9, define the interrupt
vector numbers unconditionally.

Cc: x86@kernel.org
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Suggested-by: Xin Li (Intel) <xin@zytor.com>
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2024-02-23 05:17:53 -05:00
parent 687d8f4c3d
commit 0cbca1bf44
1 changed files with 0 additions and 2 deletions
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2
arch/x86/include/asm/irq_vectors.h
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@ -84,11 +84,9 @@
#define HYPERVISOR_CALLBACK_VECTOR 0xf3
/* Vector for KVM to deliver posted interrupt IPI */
#if IS_ENABLED(CONFIG_KVM)
#define POSTED_INTR_VECTOR 0xf2
#define POSTED_INTR_WAKEUP_VECTOR 0xf1
#define POSTED_INTR_NESTED_VECTOR 0xf0
#endif
#define MANAGED_IRQ_SHUTDOWN_VECTOR 0xef