Re: [PATCH] x86: Make x2APIC support depend on interrupt remapping or guest support

From: Paolo Bonzini
Date: Sun Jul 06 2014 - 10:32:24 EST


Il 05/07/2014 09:47, Jan Kiszka ha scritto:
From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>

We are able to use x2APIC mode in the absence of interrupt remapping on
certain hypervisors. So it if fine to disable IRQ_REMAP without having
to give up x2APIC support.

Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
---
arch/x86/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index a8f749e..30a9987 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -310,7 +310,7 @@ config SMP

config X86_X2APIC
bool "Support x2apic"
- depends on X86_LOCAL_APIC && X86_64 && IRQ_REMAP
+ depends on X86_LOCAL_APIC && X86_64 && (IRQ_REMAP || HYPERVISOR_GUEST)
---help---
This enables x2apic support on CPUs that have this feature.




Makes sense.

Acked-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
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