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spapr: only update SDR1 once per-cpu during CAS

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Commit b55d295e3e added the possibility to support HPT resizing with KVM.
In the case of PR, we need to pass the userspace address of the HPT to KVM
using the SDR1 slot.
This is handled by kvmppc_update_sdr1() which uses CPU_FOREACH() to update
all CPUs. It is hence not needed to call kvmppc_update_sdr1() for each CPU.

Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Greg Kurz 2017-09-04 23:46:55 +02:00 committed by David Gibson
parent 549ce59e2b
commit 4c563d9df5
1 changed files with 5 additions and 9 deletions
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14
hw/ppc/spapr_hcall.c
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@ -1559,20 +1559,16 @@ static target_ulong h_client_architecture_support(PowerPCCPU *cpu,
}
if (spapr->htab_shift < maxshift) {
CPUState *cs;
/* Guest doesn't know about HPT resizing, so we
* pre-emptively resize for the maximum permitted RAM. At
* the point this is called, nothing should have been
* entered into the existing HPT */
spapr_reallocate_hpt(spapr, maxshift, &error_fatal);
CPU_FOREACH(cs) {
if (kvm_enabled()) {
/* For KVM PR, update the HPT pointer */
target_ulong sdr1 = (target_ulong)(uintptr_t)spapr->htab
| (spapr->htab_shift - 18);
kvmppc_update_sdr1(sdr1);
}
if (kvm_enabled()) {
/* For KVM PR, update the HPT pointer */
target_ulong sdr1 = (target_ulong)(uintptr_t)spapr->htab
| (spapr->htab_shift - 18);
kvmppc_update_sdr1(sdr1);
}
}
}