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ppc: Add ppc_set_compat_all()

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Once a compatiblity mode is negotiated with the guest,
h_client_architecture_support() uses run_on_cpu() to update each CPU to
the new mode.  We're going to want this logic somewhere else shortly,
so make a helper function to do this global update.

We put it in target-ppc/compat.c - it makes as much sense at the CPU level
as it does at the machine level.  We also move the cpu_synchronize_state()
into ppc_set_compat(), since it doesn't really make any sense to call that
without synchronizing state.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
David Gibson 2016-11-10 14:37:38 +11:00
parent 152ef803ce
commit f6f242c757
3 changed files with 43 additions and 26 deletions
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35
target/ppc/compat.c
View file

@ -18,6 +18,7 @@
*/
#include "qemu/osdep.h"
#include "sysemu/hw_accel.h"
#include "sysemu/kvm.h"
#include "kvm_ppc.h"
#include "sysemu/cpus.h"
@ -124,6 +125,8 @@ void ppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr, Error **errp)
pcr = compat->pcr;
}
cpu_synchronize_state(CPU(cpu));
cpu->compat_pvr = compat_pvr;
env->spr[SPR_PCR] = pcr & pcc->pcr_mask;
@ -136,6 +139,38 @@ void ppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr, Error **errp)
}
}
typedef struct {
uint32_t compat_pvr;
Error *err;
} SetCompatState;
static void do_set_compat(CPUState *cs, run_on_cpu_data arg)
{
PowerPCCPU *cpu = POWERPC_CPU(cs);
SetCompatState *s = arg.host_ptr;
ppc_set_compat(cpu, s->compat_pvr, &s->err);
}
void ppc_set_compat_all(uint32_t compat_pvr, Error **errp)
{
CPUState *cs;
CPU_FOREACH(cs) {
SetCompatState s = {
.compat_pvr = compat_pvr,
.err = NULL,
};
run_on_cpu(cs, do_set_compat, RUN_ON_CPU_HOST_PTR(&s));
if (s.err) {
error_propagate(errp, s.err);
return;
}
}
}
int ppc_compat_max_threads(PowerPCCPU *cpu)
{
const CompatInfo *compat = compat_by_pvr(cpu->compat_pvr);