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s390x/tcg: cache the qemu flic in a central function 

This avoids tons of conversions when handling interrupts.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180129125623.21729-17-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
David Hildenbrand 2018-01-29 13:56:21 +01:00 committed by Cornelia Huck
parent 63685bc489
commit f68ecdd4f3
4 changed files with 22 additions and 10 deletions
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23
hw/intc/s390_flic.c
View File

@ -22,6 +22,17 @@
#include "qapi/error.h"
#include "hw/s390x/s390-virtio-ccw.h"
QEMUS390FLICState *s390_get_qemu_flic(S390FLICState *fs)
{
static QEMUS390FLICState *flic;
if (!flic) {
/* we only have one flic device, so this is fine to cache */
flic = QEMU_S390_FLIC(fs);
}
return flic;
}
S390FLICState *s390_get_flic(void)
{
static S390FLICState *fs;
@ -79,7 +90,7 @@ static void qemu_s390_release_adapter_routes(S390FLICState *fs,
static int qemu_s390_clear_io_flic(S390FLICState *fs, uint16_t subchannel_id,
uint16_t subchannel_nr)
{
QEMUS390FLICState *flic = QEMU_S390_FLIC(fs);
QEMUS390FLICState *flic = s390_get_qemu_flic(fs);
QEMUS390FlicIO *cur, *next;
uint8_t isc;
@ -113,7 +124,7 @@ static int qemu_s390_clear_io_flic(S390FLICState *fs, uint16_t subchannel_id,
static int qemu_s390_modify_ais_mode(S390FLICState *fs, uint8_t isc,
uint16_t mode)
{
QEMUS390FLICState *flic = QEMU_S390_FLIC(fs);
QEMUS390FLICState *flic = s390_get_qemu_flic(fs);
switch (mode) {
case SIC_IRQ_MODE_ALL:
@ -134,7 +145,7 @@ static int qemu_s390_modify_ais_mode(S390FLICState *fs, uint8_t isc,
static int qemu_s390_inject_airq(S390FLICState *fs, uint8_t type,
uint8_t isc, uint8_t flags)
{
QEMUS390FLICState *flic = QEMU_S390_FLIC(fs);
QEMUS390FLICState *flic = s390_get_qemu_flic(fs);
S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs);
bool flag = flags & S390_ADAPTER_SUPPRESSIBLE;
uint32_t io_int_word = (isc << 27) | IO_INT_WORD_AI;
@ -246,7 +257,7 @@ void qemu_s390_flic_dequeue_crw_mchk(QEMUS390FLICState *flic)
static void qemu_s390_inject_service(S390FLICState *fs, uint32_t parm)
{
QEMUS390FLICState *flic = QEMU_S390_FLIC(fs);
QEMUS390FLICState *flic = s390_get_qemu_flic(fs);
g_assert(qemu_mutex_iothread_locked());
/* multiplexing is good enough for sclp - kvm does it internally as well */
@ -261,7 +272,7 @@ static void qemu_s390_inject_io(S390FLICState *fs, uint16_t subchannel_id,
uint32_t io_int_word)
{
const uint8_t isc = IO_INT_WORD_ISC(io_int_word);
QEMUS390FLICState *flic = QEMU_S390_FLIC(fs);
QEMUS390FLICState *flic = s390_get_qemu_flic(fs);
QEMUS390FlicIO *io;
g_assert(qemu_mutex_iothread_locked());
@ -279,7 +290,7 @@ static void qemu_s390_inject_io(S390FLICState *fs, uint16_t subchannel_id,
static void qemu_s390_inject_crw_mchk(S390FLICState *fs)
{
QEMUS390FLICState *flic = QEMU_S390_FLIC(fs);
QEMUS390FLICState *flic = s390_get_qemu_flic(fs);
g_assert(qemu_mutex_iothread_locked());
flic->pending |= FLIC_PENDING_MCHK_CR;

1
include/hw/s390x/s390_flic.h
View File

@ -135,6 +135,7 @@ bool qemu_s390_flic_has_any(QEMUS390FLICState *flic);
void s390_flic_init(void);
S390FLICState *s390_get_flic(void);
QEMUS390FLICState *s390_get_qemu_flic(S390FLICState *fs);
bool ais_needed(void *opaque);
#endif /* HW_S390_FLIC_H */

6
target/s390x/interrupt.c
View File

@ -158,7 +158,7 @@ void s390_crw_mchk(void)
bool s390_cpu_has_mcck_int(S390CPU *cpu)
{
QEMUS390FLICState *flic = QEMU_S390_FLIC(s390_get_flic());
QEMUS390FLICState *flic = s390_get_qemu_flic(s390_get_flic());
CPUS390XState *env = &cpu->env;
if (!(env->psw.mask & PSW_MASK_MCHECK)) {
@ -176,7 +176,7 @@ bool s390_cpu_has_mcck_int(S390CPU *cpu)
bool s390_cpu_has_ext_int(S390CPU *cpu)
{
QEMUS390FLICState *flic = QEMU_S390_FLIC(s390_get_flic());
QEMUS390FLICState *flic = s390_get_qemu_flic(s390_get_flic());
CPUS390XState *env = &cpu->env;
if (!(env->psw.mask & PSW_MASK_EXT)) {
@ -218,7 +218,7 @@ bool s390_cpu_has_ext_int(S390CPU *cpu)
bool s390_cpu_has_io_int(S390CPU *cpu)
{
QEMUS390FLICState *flic = QEMU_S390_FLIC(s390_get_flic());
QEMUS390FLICState *flic = s390_get_qemu_flic(s390_get_flic());
CPUS390XState *env = &cpu->env;
if (!(env->psw.mask & PSW_MASK_IO)) {

2
target/s390x/misc_helper.c
View File

@ -452,7 +452,7 @@ uint32_t HELPER(tpi)(CPUS390XState *env, uint64_t addr)
{
const uintptr_t ra = GETPC();
S390CPU *cpu = s390_env_get_cpu(env);
QEMUS390FLICState *flic = QEMU_S390_FLIC(s390_get_flic());
QEMUS390FLICState *flic = s390_get_qemu_flic(s390_get_flic());
QEMUS390FlicIO *io = NULL;
LowCore *lowcore;