In commit e3d3ced "kernel load/firmware cleanup", the call to
kvm__arch_setup_firmware() was moved. Previously more or less at the end
of the init sequence, but that commit moved it into kvm__init() which
is a core_init() call and so runs quite early.
This broke booting powerpc guests, as setup_fdt() needs to be called
later in the setup sequence. In particular it looks at kvm->nrcpus,
which is uninitialised at that point.
In general setup_fdt() needs to run late in the sequence, as it encodes
the setup of the machine into the device tree.
So move setup_fdt() out of kvm__arch_setup_firmware() and make it a
firmware_init() call of its own.
With this patch I am able to boot guests again on HV KVM.
Signed-off-by: Michael Ellerman <michael@xxxxxxxxxxxxxx>
---
tools/kvm/powerpc/kvm.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/tools/kvm/powerpc/kvm.c b/tools/kvm/powerpc/kvm.c
index e4f5315..d675265 100644
--- a/tools/kvm/powerpc/kvm.c
+++ b/tools/kvm/powerpc/kvm.c
@@ -286,7 +286,7 @@ static void generate_segment_page_sizes(struct kvm_ppc_smmu_info *info, struct f
* and whilst most PPC targets will require CPU/memory nodes, others like RTAS
* should eventually be added separately.
*/
-static void setup_fdt(struct kvm *kvm)
+static int setup_fdt(struct kvm *kvm)
{
uint64_t mem_reg_property[] = { 0, cpu_to_be64(kvm->ram_size) };
int smp_cpus = kvm->nrcpus;
@@ -488,7 +488,10 @@ static void setup_fdt(struct kvm *kvm)
_FDT(fdt_pack(fdt_dest));
free(segment_page_sizes.value);
+
+ return 0;
}
+firmware_init(setup_fdt);
/**
* kvm__arch_setup_firmware
@@ -517,9 +520,6 @@ int kvm__arch_setup_firmware(struct kvm *kvm)
/* Load SLOF */
- /* Init FDT */
- setup_fdt(kvm);
-
return 0;
}
--
1.7.9.5
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