xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

KVM: Distangle eventfd code from irqchip

Browse Source 
The current eventfd code assumes that when we have eventfd, we also have
irqfd for in-kernel interrupt delivery. This is not necessarily true. On
PPC we don't have an in-kernel irqchip yet, but we can still support easily
support eventfd.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf
2012-10-09 00:22:59 +02:00
parent 45e3cc7d9f
commit 914daba865
2 changed files with 17 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
virt/kvm/eventfd.c
View File

@@ -35,6 +35,7 @@
#include "iodev.h"
#ifdef __KVM_HAVE_IOAPIC
/*
* --------------------------------------------------------------------
* irqfd: Allows an fd to be used to inject an interrupt to the guest
@@ -425,17 +426,21 @@ fail:
kfree(irqfd);
return ret;
}
#endif
void
kvm_eventfd_init(struct kvm *kvm)
{
#ifdef __KVM_HAVE_IOAPIC
spin_lock_init(&kvm->irqfds.lock);
INIT_LIST_HEAD(&kvm->irqfds.items);
INIT_LIST_HEAD(&kvm->irqfds.resampler_list);
mutex_init(&kvm->irqfds.resampler_lock);
#endif
INIT_LIST_HEAD(&kvm->ioeventfds);
}
#ifdef __KVM_HAVE_IOAPIC
/*
* shutdown any irqfd's that match fd+gsi
*/
@@ -555,6 +560,7 @@ static void __exit irqfd_module_exit(void)
module_init(irqfd_module_init);
module_exit(irqfd_module_exit);
#endif
/*
* --------------------------------------------------------------------