Patchwork [v2,7/7] kvm: Add documentation comment for kvm_irqchip_in_kernel()

login
register
mail settings
Submitter Peter Maydell
Date July 26, 2012, 2:35 p.m.
Message ID <1343313317-27087-8-git-send-email-peter.maydell@linaro.org>
Download mbox | patch
Permalink /patch/173446/
State New
Headers show

Comments

Peter Maydell - July 26, 2012, 2:35 p.m.
Now we've cleared out the architecture-independent uses of
kvm_irqchip_in_kernel(), we can add a doc comment describing
what it means.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 kvm.h |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

Patch

diff --git a/kvm.h b/kvm.h
index 444ed2e..5b8f588 100644
--- a/kvm.h
+++ b/kvm.h
@@ -31,6 +31,17 @@  extern bool kvm_gsi_routing_allowed;
 
 #if defined CONFIG_KVM || !defined NEED_CPU_H
 #define kvm_enabled()           (kvm_allowed)
+/**
+ * kvm_irqchip_in_kernel:
+ *
+ * Returns: true if the user asked us to create an in-kernel
+ * irqchip via the "kernel_irqchip=on" machine option.
+ * What this actually means is architecture and machine model
+ * specific: on PC, for instance, it means that the LAPIC,
+ * IOAPIC and PIT are all in kernel. This function should never
+ * be used from generic target-independent code: use one of the
+ * following functions or some other specific check instead.
+ */
 #define kvm_irqchip_in_kernel() (kvm_kernel_irqchip)
 
 /**