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s390x/kvm: factor out storing of adtl CPU status 

Called from SIGP code to be factored out, so let's move it. Add a
FIXME for TCG code in the future.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170928203708.9376-15-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
David Hildenbrand 2017-09-28 22:36:52 +02:00 committed by Cornelia Huck
parent cf729baaec
commit f875cb0c21
3 changed files with 31 additions and 29 deletions
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29
target/s390x/helper.c
View File

@ -305,6 +305,35 @@ int s390_store_status(S390CPU *cpu, hwaddr addr, bool store_arch)
return 0; return 0;
} }
#define ADTL_GS_OFFSET 1024 /* offset of GS data in adtl save area */
#define ADTL_GS_MIN_SIZE 2048 /* minimal size of adtl save area for GS */
int s390_store_adtl_status(S390CPU *cpu, hwaddr addr, hwaddr len)
{
hwaddr save = len;
void *mem;
mem = cpu_physical_memory_map(addr, &save, 1);
if (!mem) {
return -EFAULT;
}
if (save != len) {
cpu_physical_memory_unmap(mem, len, 1, 0);
return -EFAULT;
}
/* FIXME: as soon as TCG supports these features, convert cpu->be */
if (s390_has_feat(S390_FEAT_VECTOR)) {
memcpy(mem, &cpu->env.vregs, 512);
}
if (s390_has_feat(S390_FEAT_GUARDED_STORAGE) && len >= ADTL_GS_MIN_SIZE) {
memcpy(mem + ADTL_GS_OFFSET, &cpu->env.gscb, 32);
}
cpu_physical_memory_unmap(mem, len, 1, len);
return 0;
}
#endif /* CONFIG_USER_ONLY */ #endif /* CONFIG_USER_ONLY */
void s390_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf, void s390_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,

1
target/s390x/internal.h
View File

@ -355,6 +355,7 @@ void do_restart_interrupt(CPUS390XState *env);
void s390_handle_wait(S390CPU *cpu); void s390_handle_wait(S390CPU *cpu);
#define S390_STORE_STATUS_DEF_ADDR offsetof(LowCore, floating_pt_save_area) #define S390_STORE_STATUS_DEF_ADDR offsetof(LowCore, floating_pt_save_area)
int s390_store_status(S390CPU *cpu, hwaddr addr, bool store_arch); int s390_store_status(S390CPU *cpu, hwaddr addr, bool store_arch);
int s390_store_adtl_status(S390CPU *cpu, hwaddr addr, hwaddr len);
#ifndef CONFIG_USER_ONLY #ifndef CONFIG_USER_ONLY
LowCore *cpu_map_lowcore(CPUS390XState *env); LowCore *cpu_map_lowcore(CPUS390XState *env);
void cpu_unmap_lowcore(LowCore *lowcore); void cpu_unmap_lowcore(LowCore *lowcore);

30
target/s390x/kvm.c
View File

@ -1556,34 +1556,6 @@ static void sigp_stop(CPUState *cs, run_on_cpu_data arg)
si->cc = SIGP_CC_ORDER_CODE_ACCEPTED; si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
} }
#define ADTL_GS_OFFSET 1024 /* offset of GS data in adtl save area */
#define ADTL_GS_MIN_SIZE 2048 /* minimal size of adtl save area for GS */
static int do_store_adtl_status(S390CPU *cpu, hwaddr addr, hwaddr len)
{
hwaddr save = len;
void *mem;
mem = cpu_physical_memory_map(addr, &save, 1);
if (!mem) {
return -EFAULT;
}
if (save != len) {
cpu_physical_memory_unmap(mem, len, 1, 0);
return -EFAULT;
}
if (s390_has_feat(S390_FEAT_VECTOR)) {
memcpy(mem, &cpu->env.vregs, 512);
}
if (s390_has_feat(S390_FEAT_GUARDED_STORAGE) && len >= ADTL_GS_MIN_SIZE) {
memcpy(mem + ADTL_GS_OFFSET, &cpu->env.gscb, 32);
}
cpu_physical_memory_unmap(mem, len, 1, len);
return 0;
}
static void sigp_stop_and_store_status(CPUState *cs, run_on_cpu_data arg) static void sigp_stop_and_store_status(CPUState *cs, run_on_cpu_data arg)
{ {
S390CPU *cpu = S390_CPU(cs); S390CPU *cpu = S390_CPU(cs);
@ -1676,7 +1648,7 @@ static void sigp_store_adtl_status(CPUState *cs, run_on_cpu_data arg)
cpu_synchronize_state(cs); cpu_synchronize_state(cs);
if (do_store_adtl_status(cpu, addr, len)) { if (s390_store_adtl_status(cpu, addr, len)) {
set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER); set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
return; return;
} }