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| author | Greg Kurz | 2017-09-25 13:00:02 +0200 |
|---|---|---|
| committer | David Gibson | 2017-09-27 05:05:41 +0200 |
| commit | 1ec26c757d5996468afcc0dced4fad04139574b3 (patch) | |
| tree | 2718d87821896125e083323d9cbc4019726b1c4e /hw/ppc/spapr_cpu_core.c | |
| parent | ppc/pnv: check for OPAL firmware file presence (diff) | |
| download | qemu-1ec26c757d5996468afcc0dced4fad04139574b3.tar.gz qemu-1ec26c757d5996468afcc0dced4fad04139574b3.tar.xz qemu-1ec26c757d5996468afcc0dced4fad04139574b3.zip | |
spapr: fix the value of SDR1 in kvmppc_put_books_sregs()
When running with KVM PR, if a new HPT is allocated we need to inform
KVM about the HPT address and size. This is currently done by hacking
the value of SDR1 and pushing it to KVM in several places.
Also, migration breaks the guest since it is very unlikely the HPT has
the same address in source and destination, but we push the incoming
value of SDR1 to KVM anyway.
This patch introduces a new virtual hypervisor hook so that the spapr
code can provide the correct value of SDR1 to be pushed to KVM each
time kvmppc_put_books_sregs() is called.
It allows to get rid of all the hacking in the spapr/kvmppc code and
it fixes migration of nested KVM PR.
Suggested-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'hw/ppc/spapr_cpu_core.c')
| -rw-r--r-- | hw/ppc/spapr_cpu_core.c | 16 |
1 files changed, 1 insertions, 15 deletions
diff --git a/hw/ppc/spapr_cpu_core.c b/hw/ppc/spapr_cpu_core.c index c08ee7571a..3e20b1d886 100644 --- a/hw/ppc/spapr_cpu_core.c +++ b/hw/ppc/spapr_cpu_core.c @@ -18,6 +18,7 @@ #include "hw/ppc/ppc.h" #include "target/ppc/mmu-hash64.h" #include "sysemu/numa.h" +#include "sysemu/hw_accel.h" #include "qemu/error-report.h" void spapr_cpu_parse_features(sPAPRMachineState *spapr) @@ -73,7 +74,6 @@ void spapr_cpu_parse_features(sPAPRMachineState *spapr) static void spapr_cpu_reset(void *opaque) { - sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); PowerPCCPU *cpu = opaque; CPUState *cs = CPU(cpu); CPUPPCState *env = &cpu->env; @@ -86,20 +86,6 @@ static void spapr_cpu_reset(void *opaque) cs->halted = 1; env->spr[SPR_HIOR] = 0; - - /* - * This is a hack for the benefit of KVM PR - it abuses the SDR1 - * slot in kvm_sregs to communicate the userspace address of the - * HPT - */ - if (kvm_enabled()) { - env->spr[SPR_SDR1] = (target_ulong)(uintptr_t)spapr->htab - | (spapr->htab_shift - 18); - if (kvmppc_put_books_sregs(cpu) < 0) { - error_report("Unable to update SDR1 in KVM"); - exit(1); - } - } } static void spapr_cpu_destroy(PowerPCCPU *cpu) |