From: Jan Kiszka <jan.kiszka@web.de>
To: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
x86 <x86@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: kvm <kvm@vger.kernel.org>
Subject: [PATCH] x86: Make x2APIC support depend on interrupt remapping or guest support
Date: Sat, 05 Jul 2014 09:47:54 +0200 [thread overview]
Message-ID: <53B7ADAA.9030101@web.de> (raw)
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From: Jan Kiszka <jan.kiszka@siemens.com>
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@siemens.com>
---
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.
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next reply other threads:[~2014-07-05 7:48 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-05 7:47 Jan Kiszka [this message]
2014-07-06 14:32 ` [PATCH] x86: Make x2APIC support depend on interrupt remapping or guest support Paolo Bonzini
2014-07-06 15:12 ` Gleb Natapov
2014-07-06 15:24 ` Jan Kiszka
2014-07-06 15:41 ` Gleb Natapov
2014-07-06 15:49 ` Jan Kiszka
2014-07-06 17:28 ` Gleb Natapov
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