On Thu, Dec 4, 2014 at 8:13 PM, Peter Maydell <peter.maydell@xxxxxxxxxx> wrote:
> On 3 December 2014 at 20:17, Christoffer Dall
> <christoffer.dall@xxxxxxxxxx> wrote:
>> When resetting a VCPU we currently call both kvm_arm_vcpu_init() and
>> write_kvmstate_to_list(), both of which can fail, but we never check the
>> return value.
>>
>> The only choice here is to print an error an exit if the calls fail.
>
> I like this patch, but it is going to conflict with a patch I'm
> nearly done testing and plan to send tomorrow that unifies the
> sysreg handling for 32 and 64 bit KVM/ARM. Part of what that
> involves is using a single kvm_arm_reset_vcpu() in kvm.c rather
> than different 32 and 64 bit versions. So you should probably
> respin this patch on top of that one.
>
ok, will do, or you can squash this into yours, as you like.
>> Signed-off-by: Christoffer Dall <christoffer.dall@xxxxxxxxxx>
>> ---
>> target-arm/kvm32.c | 13 +++++++++++--
>> target-arm/kvm64.c | 8 +++++++-
>> 2 files changed, 18 insertions(+), 3 deletions(-)
>>
>> diff --git a/target-arm/kvm32.c b/target-arm/kvm32.c
>> index 5ec4eb1..1fd0e83 100644
>> --- a/target-arm/kvm32.c
>> +++ b/target-arm/kvm32.c
>> @@ -511,9 +511,18 @@ int kvm_arch_get_registers(CPUState *cs)
>>
>> void kvm_arm_reset_vcpu(ARMCPU *cpu)
>> {
>> + int ret;
>> +
>> /* Re-init VCPU so that all registers are set to
>> * their respective reset values.
>> */
>> - kvm_arm_vcpu_init(CPU(cpu));
>> - write_kvmstate_to_list(cpu);
>> + ret = kvm_arm_vcpu_init(CPU(cpu));
>> + if (ret < 0) {
>> + fprintf(stderr, "kvm_arm_vcpu_init failed: %s\n", strerror(ret));
>
> Shouldn't this be strerror(-ret) ?
>
ah right, the init call returns a negative errno, but strerror expects
the positive one.
-Christoffer
_______________________________________________
kvmarm mailing list
kvmarm@xxxxxxxxxxxxxxxxxxxxx
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
