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authorDavid Hildenbrand <david@redhat.com>2018-01-29 13:56:23 +0100
committerCornelia Huck <cohuck@redhat.com>2018-02-09 09:37:13 +0100
commit6762808fda6f622d1a2cfb4752e3840c8c49ca15 (patch)
tree3c3ab824140240ae08d79401dcbc167a3b346391 /hw/intc
parentc21a6106c19c894e117a5258c1a71ddc236fe1f0 (diff)
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s390x/flic: cache the common flic class in a central function
This avoids tons of conversions when handling interrupts. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180129125623.21729-19-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'hw/intc')
-rw-r--r--hw/intc/s390_flic.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/hw/intc/s390_flic.c b/hw/intc/s390_flic.c
index b46c0f1..a85a149 100644
--- a/hw/intc/s390_flic.c
+++ b/hw/intc/s390_flic.c
@@ -22,6 +22,17 @@
#include "qapi/error.h"
#include "hw/s390x/s390-virtio-ccw.h"
+S390FLICStateClass *s390_get_flic_class(S390FLICState *fs)
+{
+ static S390FLICStateClass *class;
+
+ if (!class) {
+ /* we only have one flic device, so this is fine to cache */
+ class = S390_FLIC_COMMON_GET_CLASS(fs);
+ }
+ return class;
+}
+
QEMUS390FLICState *s390_get_qemu_flic(S390FLICState *fs)
{
static QEMUS390FLICState *flic;
@@ -146,7 +157,7 @@ static int qemu_s390_inject_airq(S390FLICState *fs, uint8_t type,
uint8_t isc, uint8_t flags)
{
QEMUS390FLICState *flic = s390_get_qemu_flic(fs);
- S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs);
+ S390FLICStateClass *fsc = s390_get_flic_class(fs);
bool flag = flags & S390_ADAPTER_SUPPRESSIBLE;
uint32_t io_int_word = (isc << 27) | IO_INT_WORD_AI;