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[Qemu-devel] [PATCH 13/25] s390x/kvm: Add function for injecting pgm acc
From: |
Jens Freimann |
Subject: |
[Qemu-devel] [PATCH 13/25] s390x/kvm: Add function for injecting pgm access exceptions |
Date: |
Thu, 12 Feb 2015 18:09:30 +0100 |
From: Thomas Huth <address@hidden>
Program access exceptions are defined to deliver a translation exception
code in the low-core. Add a function trigger_access_exception() that
generates the proper program interrupt on both KVM and non-KVM systems
and switch the existing code to use it.
Signed-off-by: Thomas Huth <address@hidden>
Signed-off-by: Jens Freimann <address@hidden>
Reviewed-by: David Hildenbrand <address@hidden>
Reviewed-by: Cornelia Huck <address@hidden>
---
target-s390x/cpu.h | 5 +++++
target-s390x/kvm.c | 12 ++++++++++++
target-s390x/mmu_helper.c | 22 ++++++++++++++++------
3 files changed, 33 insertions(+), 6 deletions(-)
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h
index c24ca5f..f8cea30 100644
--- a/target-s390x/cpu.h
+++ b/target-s390x/cpu.h
@@ -397,6 +397,7 @@ void kvm_s390_service_interrupt(uint32_t parm);
void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq);
void kvm_s390_floating_interrupt(struct kvm_s390_irq *irq);
int kvm_s390_inject_flic(struct kvm_s390_irq *irq);
+void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code);
#else
static inline void kvm_s390_virtio_irq(int config_change, uint64_t token)
{
@@ -404,6 +405,10 @@ static inline void kvm_s390_virtio_irq(int config_change,
uint64_t token)
static inline void kvm_s390_service_interrupt(uint32_t parm)
{
}
+static inline void kvm_s390_access_exception(S390CPU *cpu, uint16_t code,
+ uint64_t te_code)
+{
+}
#endif
S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
unsigned int s390_cpu_halt(S390CPU *cpu);
diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
index 6f2d5b4..a9a4c64 100644
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -756,6 +756,18 @@ static void enter_pgmcheck(S390CPU *cpu, uint16_t code)
kvm_s390_vcpu_interrupt(cpu, &irq);
}
+void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code)
+{
+ struct kvm_s390_irq irq = {
+ .type = KVM_S390_PROGRAM_INT,
+ .u.pgm.code = code,
+ .u.pgm.trans_exc_code = te_code,
+ .u.pgm.exc_access_id = te_code & 3,
+ };
+
+ kvm_s390_vcpu_interrupt(cpu, &irq);
+}
+
static int kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run,
uint16_t ipbh0)
{
diff --git a/target-s390x/mmu_helper.c b/target-s390x/mmu_helper.c
index 32a51f3..a1ee992 100644
--- a/target-s390x/mmu_helper.c
+++ b/target-s390x/mmu_helper.c
@@ -46,10 +46,23 @@
#define FS_READ 0x800
#define FS_WRITE 0x400
+static void trigger_access_exception(CPUS390XState *env, uint32_t type,
+ uint32_t ilen, uint64_t tec)
+{
+ S390CPU *cpu = s390_env_get_cpu(env);
+
+ if (kvm_enabled()) {
+ kvm_s390_access_exception(cpu, type, tec);
+ } else {
+ CPUState *cs = CPU(cpu);
+ stq_phys(cs->as, env->psa + offsetof(LowCore, trans_exc_code), tec);
+ trigger_pgm_exception(env, type, ilen);
+ }
+}
+
static void trigger_prot_fault(CPUS390XState *env, target_ulong vaddr,
uint64_t asc, int rw, bool exc)
{
- CPUState *cs = CPU(s390_env_get_cpu(env));
uint64_t tec;
tec = vaddr | (rw == 1 ? FS_WRITE : FS_READ) | 4 | asc >> 46;
@@ -60,14 +73,12 @@ static void trigger_prot_fault(CPUS390XState *env,
target_ulong vaddr,
return;
}
- stq_phys(cs->as, env->psa + offsetof(LowCore, trans_exc_code), tec);
- trigger_pgm_exception(env, PGM_PROTECTION, ILEN_LATER_INC);
+ trigger_access_exception(env, PGM_PROTECTION, ILEN_LATER_INC, tec);
}
static void trigger_page_fault(CPUS390XState *env, target_ulong vaddr,
uint32_t type, uint64_t asc, int rw, bool exc)
{
- CPUState *cs = CPU(s390_env_get_cpu(env));
int ilen = ILEN_LATER;
uint64_t tec;
@@ -84,8 +95,7 @@ static void trigger_page_fault(CPUS390XState *env,
target_ulong vaddr,
ilen = 2;
}
- stq_phys(cs->as, env->psa + offsetof(LowCore, trans_exc_code), tec);
- trigger_pgm_exception(env, type, ilen);
+ trigger_access_exception(env, type, ilen, tec);
}
/**
--
2.1.4
- [Qemu-devel] [PATCH 11/25] s390x/mmu: Check bit 52 in page table entry, (continued)
- [Qemu-devel] [PATCH 11/25] s390x/mmu: Check bit 52 in page table entry, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 08/25] s390x/mmu: Fix the exception codes for illegal table entries, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 05/25] s390x/mmu: Skip exceptions properly when translating addresses for debug, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 04/25] s390x/mmu: Check table length and offset fields, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 09/25] s390x/mmu: Add support for read-only regions, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 03/25] s390x/mmu: Fix the handling of the table levels, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 25/25] s390x/helper: Remove s390_cpu_physical_memory_map, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 07/25] s390x/mmu: Fix exception types when checking the ASCEs, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 14/25] s390x/mmu: Add function for accessing guest memory, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 16/25] s390x/ioinst: Rework memory access in MSCH instruction, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 13/25] s390x/kvm: Add function for injecting pgm access exceptions,
Jens Freimann <=
- [Qemu-devel] [PATCH 17/25] s390x/ioinst: Rework memory access in SSCH instruction, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 02/25] s390x/mmu: Fix the check for the real-space designation bit, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 20/25] s390x/ioinst: Rework memory access in TSCH instruction, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 22/25] s390x/ioinst: Rework memory access in CHSC instruction, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 10/25] s390x/mmu: Renaming related to the ASCE confusion, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 06/25] s390x/mmu: Fix translation exception code in lowcore, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 19/25] s390x/ioinst: Set condition code in ioinst_handle_tsch() handler, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 21/25] s390x/ioinst: Rework memory access in STCRW instruction, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 23/25] s390x/ioinst: Rework memory access in TPI instruction, Jens Freimann, 2015/02/12
- [Qemu-devel] [PATCH 01/25] s390x/mmu: Move mmu_translate() and friends to separate file, Jens Freimann, 2015/02/12