arm: fix qemu crash on startup with -bios option
When QEMU is started with following CLI
-machine virt,gic-version=3,accel=kvm -cpu host -bios AAVMF_CODE.fd
it crashes with abort at
accel/kvm/kvm-all.c:2164:
KVM_SET_DEVICE_ATTR failed: Group 6 attr 0x000000000000c665: Invalid argument
Which is caused by implicit dependency of kvm_arm_gicv3_reset() on
arm_gicv3_icc_reset() where the later is called by CPU reset
reset callback.
However commit:
3b77f6c arm/boot: split load_dtb() from arm_load_kernel()
broke CPU reset callback registration in case
arm_load_kernel()
...
if (!info->kernel_filename || info->firmware_loaded)
branch is taken, i.e. it's sufficient to provide a firmware
or do not provide kernel on CLI to skip cpu reset callback
registration, where before offending commit the callback
has been registered unconditionally.
Fix it by registering the callback right at the beginning of
arm_load_kernel() unconditionally instead of doing it at the end.
NOTE:
we probably should eliminate that dependency anyways as well as
separate arch CPU reset parts from arm_load_kernel() into CPU
itself, but that refactoring that I probably would have to do
anyways later for CPU hotplug to work.
Reported-by: Auger Eric <eric.auger@redhat.com>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Message-id: 1527070950-208350-1-git-send-email-imammedo@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
diff --git a/hw/arm/boot.c b/hw/arm/boot.c
index 9496f33..1e48166 100644
--- a/hw/arm/boot.c
+++ b/hw/arm/boot.c
@@ -926,6 +926,15 @@
static const ARMInsnFixup *primary_loader;
AddressSpace *as = arm_boot_address_space(cpu, info);
+ /* CPU objects (unlike devices) are not automatically reset on system
+ * reset, so we must always register a handler to do so. If we're
+ * actually loading a kernel, the handler is also responsible for
+ * arranging that we start it correctly.
+ */
+ for (cs = first_cpu; cs; cs = CPU_NEXT(cs)) {
+ qemu_register_reset(do_cpu_reset, ARM_CPU(cs));
+ }
+
/* The board code is not supposed to set secure_board_setup unless
* running its code in secure mode is actually possible, and KVM
* doesn't support secure.
@@ -1143,15 +1152,6 @@
ARM_CPU(cs)->env.boot_info = info;
}
- /* CPU objects (unlike devices) are not automatically reset on system
- * reset, so we must always register a handler to do so. If we're
- * actually loading a kernel, the handler is also responsible for
- * arranging that we start it correctly.
- */
- for (cs = first_cpu; cs; cs = CPU_NEXT(cs)) {
- qemu_register_reset(do_cpu_reset, ARM_CPU(cs));
- }
-
if (!info->skip_dtb_autoload && have_dtb(info)) {
if (arm_load_dtb(info->dtb_start, info, info->dtb_limit, as) < 0) {
exit(1);
