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| author | David Gibson <david@gibson.dropbear.id.au> | 2013-09-26 16:18:44 +1000 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2013-10-25 23:25:47 +0200 |
| commit | 11ad93f68195f68cc94d988f2aa50b4d190ee52a (patch) | |
| tree | 593486548707d61657eb62f024395fc55fddbdde /include | |
| parent | 5eb92ccc3f23f958c0d21bed7c22abe6c1f1adda (diff) | |
| download | hqemu-11ad93f68195f68cc94d988f2aa50b4d190ee52a.zip hqemu-11ad93f68195f68cc94d988f2aa50b4d190ee52a.tar.gz | |
xics-kvm: Support for in-kernel XICS interrupt controller
Recent (host) kernels support emulating the PAPR defined "XICS" interrupt
controller system within KVM. This patch allows qemu to initialize and
configure the in-kernel XICS, and keep its state in sync with qemu's XICS
state as necessary.
This should give considerable performance improvements. e.g. on a simple
IPI ping-pong test between hardware threads, using qemu XICS gives us
around 5,000 irqs/second, whereas the in-kernel XICS gives us around
70,000 irqs/s on the same hardware configuration.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[Mike Qiu <qiudayu@linux.vnet.ibm.com>: fixed mistype which caused ics_set_kvm_state() to fail]
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/ppc/xics.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/hw/ppc/xics.h b/include/hw/ppc/xics.h index 343bba8..0d7673d 100644 --- a/include/hw/ppc/xics.h +++ b/include/hw/ppc/xics.h @@ -35,6 +35,9 @@ #define TYPE_XICS "xics" #define XICS(obj) OBJECT_CHECK(XICSState, (obj), TYPE_XICS) +#define TYPE_KVM_XICS "xics-kvm" +#define KVM_XICS(obj) OBJECT_CHECK(KVMXICSState, (obj), TYPE_KVM_XICS) + #define XICS_COMMON_CLASS(klass) \ OBJECT_CLASS_CHECK(XICSStateClass, (klass), TYPE_XICS_COMMON) #define XICS_CLASS(klass) \ @@ -82,6 +85,9 @@ struct XICSState { #define TYPE_ICP "icp" #define ICP(obj) OBJECT_CHECK(ICPState, (obj), TYPE_ICP) +#define TYPE_KVM_ICP "icp-kvm" +#define KVM_ICP(obj) OBJECT_CHECK(ICPState, (obj), TYPE_KVM_ICP) + #define ICP_CLASS(klass) \ OBJECT_CLASS_CHECK(ICPStateClass, (klass), TYPE_ICP) #define ICP_GET_CLASS(obj) \ @@ -98,6 +104,7 @@ struct ICPState { /*< private >*/ DeviceState parent_obj; /*< public >*/ + CPUState *cs; uint32_t xirr; uint8_t pending_priority; uint8_t mfrr; @@ -107,6 +114,9 @@ struct ICPState { #define TYPE_ICS "ics" #define ICS(obj) OBJECT_CHECK(ICSState, (obj), TYPE_ICS) +#define TYPE_KVM_ICS "icskvm" +#define KVM_ICS(obj) OBJECT_CHECK(ICSState, (obj), TYPE_KVM_ICS) + #define ICS_CLASS(klass) \ OBJECT_CLASS_CHECK(ICSStateClass, (klass), TYPE_ICS) #define ICS_GET_CLASS(obj) \ |
