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[Qemu-devel] [PATCH 08/10] s390x: add function to deliver restart irqs
From: |
Jens Freimann |
Subject: |
[Qemu-devel] [PATCH 08/10] s390x: add function to deliver restart irqs |
Date: |
Tue, 24 Feb 2015 14:15:29 +0100 |
From: David Hildenbrand <address@hidden>
This patch adds a helper function to deliver restart irqs. To be able to be used
by kvm, the psw load/store methods have to perform special cc-code handling only
when running with tcg.
Reviewed-by: Cornelia Huck <address@hidden>
Signed-off-by: Jens Freimann <address@hidden>
Signed-off-by: David Hildenbrand <address@hidden>
---
target-s390x/cpu.h | 4 +++-
target-s390x/helper.c | 35 ++++++++++++++++++++++++++++-------
2 files changed, 31 insertions(+), 8 deletions(-)
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h
index 988d4a0..162cbb6 100644
--- a/target-s390x/cpu.h
+++ b/target-s390x/cpu.h
@@ -355,6 +355,8 @@ void *s390_cpu_physical_memory_map(CPUS390XState *env,
hwaddr addr, hwaddr *len,
int is_write);
void s390_cpu_physical_memory_unmap(CPUS390XState *env, void *addr, hwaddr len,
int is_write);
+void do_restart_interrupt(CPUS390XState *env);
+
static inline hwaddr decode_basedisp_s(CPUS390XState *env, uint32_t ipb)
{
hwaddr addr = 0;
@@ -666,7 +668,7 @@ typedef struct LowCore
PSW mcck_old_psw; /* 0x160 */
PSW io_old_psw; /* 0x170 */
uint8_t pad7[0x1a0-0x180]; /* 0x180 */
- PSW restart_psw; /* 0x1a0 */
+ PSW restart_new_psw; /* 0x1a0 */
PSW external_new_psw; /* 0x1b0 */
PSW svc_new_psw; /* 0x1c0 */
PSW program_new_psw; /* 0x1d0 */
diff --git a/target-s390x/helper.c b/target-s390x/helper.c
index 5958343..cb84779 100644
--- a/target-s390x/helper.c
+++ b/target-s390x/helper.c
@@ -506,7 +506,9 @@ void load_psw(CPUS390XState *env, uint64_t mask, uint64_t
addr)
{
env->psw.addr = addr;
env->psw.mask = mask;
- env->cc_op = (mask >> 44) & 3;
+ if (tcg_enabled()) {
+ env->cc_op = (mask >> 44) & 3;
+ }
if (mask & PSW_MASK_WAIT) {
S390CPU *cpu = s390_env_get_cpu(env);
@@ -520,14 +522,16 @@ void load_psw(CPUS390XState *env, uint64_t mask, uint64_t
addr)
static uint64_t get_psw_mask(CPUS390XState *env)
{
- uint64_t r;
+ uint64_t r = env->psw.mask;
- env->cc_op = calc_cc(env, env->cc_op, env->cc_src, env->cc_dst,
env->cc_vr);
+ if (tcg_enabled()) {
+ env->cc_op = calc_cc(env, env->cc_op, env->cc_src, env->cc_dst,
+ env->cc_vr);
- r = env->psw.mask;
- r &= ~PSW_MASK_CC;
- assert(!(env->cc_op & ~3));
- r |= (uint64_t)env->cc_op << 44;
+ r &= ~PSW_MASK_CC;
+ assert(!(env->cc_op & ~3));
+ r |= (uint64_t)env->cc_op << 44;
+ }
return r;
}
@@ -577,6 +581,23 @@ void s390_cpu_physical_memory_unmap(CPUS390XState *env,
void *addr, hwaddr len,
cpu_physical_memory_unmap(addr, len, is_write, len);
}
+void do_restart_interrupt(CPUS390XState *env)
+{
+ uint64_t mask, addr;
+ LowCore *lowcore;
+
+ lowcore = cpu_map_lowcore(env);
+
+ lowcore->restart_old_psw.mask = cpu_to_be64(get_psw_mask(env));
+ lowcore->restart_old_psw.addr = cpu_to_be64(env->psw.addr);
+ mask = be64_to_cpu(lowcore->restart_new_psw.mask);
+ addr = be64_to_cpu(lowcore->restart_new_psw.addr);
+
+ cpu_unmap_lowcore(lowcore);
+
+ load_psw(env, mask, addr);
+}
+
static void do_svc_interrupt(CPUS390XState *env)
{
uint64_t mask, addr;
--
2.1.4
- [Qemu-devel] [PATCH 00/10] s390x: move sigp handling to user space, Jens Freimann, 2015/02/24
- [Qemu-devel] [PATCH 05/10] s390x/kvm: trace all SIGP orders, Jens Freimann, 2015/02/24
- [Qemu-devel] [PATCH 10/10] s390x/kvm: enable the new SIGP handling in user space, Jens Freimann, 2015/02/24
- [Qemu-devel] [PATCH 03/10] s390x/kvm: pass the SIGP instruction parameter to the SIGP handler, Jens Freimann, 2015/02/24
- [Qemu-devel] [PATCH 04/10] s390x/kvm: helper to set the SIGP status in SigpInfo, Jens Freimann, 2015/02/24
- [Qemu-devel] [PATCH 01/10] s390x: introduce defines for SIGP condition codes, Jens Freimann, 2015/02/24
- [Qemu-devel] [PATCH 09/10] s390x/kvm: deliver SIGP RESTART directly if stopped, Jens Freimann, 2015/02/24
- [Qemu-devel] [PATCH 06/10] s390x/kvm: implement handling of new SIGP orders, Jens Freimann, 2015/02/24
- [Qemu-devel] [PATCH 07/10] s390x/kvm: SIGP START is only applicable when STOPPED, Jens Freimann, 2015/02/24
- [Qemu-devel] [PATCH 08/10] s390x: add function to deliver restart irqs,
Jens Freimann <=
- [Qemu-devel] [PATCH 02/10] s390x/kvm: more details for SIGP handler with one destination vcpu, Jens Freimann, 2015/02/24