From 3a87d83bb8a15bfcb4dab9dc0fec21f5641370ac Mon Sep 17 00:00:00 2001 From: Michael S. Tsirkin Date: Wed, 3 Mar 2010 19:58:56 -0300 Subject: [PATCH 15/17] kvm: irqfd support RH-Author: Michael S. Tsirkin Message-id: Patchwork-id: 7490 O-Subject: [PATCHv3 15/17] kvm: irqfd support Bugzilla: 562958 RH-Acked-by: Juan Quintela RH-Acked-by: Amit Shah RH-Acked-by: Gerd Hoffmann Add API to assign/deassign irqfd to kvm. Add stub so that users do not have to use ifdefs. Signed-off-by: Michael S. Tsirkin --- kvm-all.c | 19 +++++++++++++++++++ kvm.h | 10 ++++++++++ 2 files changed, 29 insertions(+), 0 deletions(-) Signed-off-by: Eduardo Habkost --- kvm-all.c | 19 +++++++++++++++++++ kvm.h | 10 ++++++++++ 2 files changed, 29 insertions(+), 0 deletions(-) diff --git a/kvm-all.c b/kvm-all.c index c344bd1..81dcc8f 100644 --- a/kvm-all.c +++ b/kvm-all.c @@ -1124,4 +1124,23 @@ int kvm_set_ioeventfd_pio_word(int fd, uint16_t addr, uint16_t val, bool assign) } #endif +#if defined(KVM_IRQFD) +int kvm_set_irqfd(int gsi, int fd, bool assigned) +{ + struct kvm_irqfd irqfd = { + .fd = fd, + .gsi = gsi, + .flags = assigned ? 0 : KVM_IRQFD_FLAG_DEASSIGN, + }; + int r; + if (!kvm_irqchip_in_kernel()) + return -ENOSYS; + + r = kvm_vm_ioctl(kvm_state, KVM_IRQFD, &irqfd); + if (r < 0) + return r; + return 0; +} +#endif + #include "qemu-kvm.c" diff --git a/kvm.h b/kvm.h index 6ac54fe..3a7c2bc 100644 --- a/kvm.h +++ b/kvm.h @@ -162,4 +162,14 @@ int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign) } #endif +#if defined(KVM_IRQFD) && defined(CONFIG_KVM) +int kvm_set_irqfd(int gsi, int fd, bool assigned); +#else +static inline +int kvm_set_irqfd(int gsi, int fd, bool assigned) +{ + return -ENOSYS; +} +#endif + #endif -- 1.6.3.rc4.29.g8146