On Thu, Oct 17, 2013 at 2:00 AM, Christoffer Dall christoffer.dall@linaro.org wrote:
On Wed, Oct 16, 2013 at 10:32:30PM +0530, Anup Patel wrote:
Update user space API interface headers for providing information to user space needed to emulate PSCI function calls in user space (i.e. QEMU or KVMTOOL).
Signed-off-by: Anup Patel anup.patel@linaro.org Signed-off-by: Pranavkumar Sawargaonkar pranavkumar@linaro.org
include/uapi/linux/kvm.h | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index e32e776..dae2664 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -171,6 +171,7 @@ struct kvm_pit_config { #define KVM_EXIT_WATCHDOG 21 #define KVM_EXIT_S390_TSCH 22 #define KVM_EXIT_EPR 23 +#define KVM_EXIT_PSCI 24
/* For KVM_EXIT_INTERNAL_ERROR */ /* Emulate instruction failed. */ @@ -301,6 +302,12 @@ struct kvm_run { struct { __u32 epr; } epr;
/* KVM_EXIT_PSCI */struct {__u32 fn;__u64 args[7];__u64 ret[4];} psci; /* Fix the size of the union. */ char padding[256]; };-- 1.7.9.5
I think you'd need a KVM_CAP_PSCI or something here so that QEMU can know to mmap this much, no?
Also, it would be easier if you just added the documentation for this change together with this patch IMHO.
Yes, I think its good atleast advertise KVM_CAP_PSCI to QEMU. I'll add it in revised patch.
-Christoffer _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm
-- Anup