On 05/28/2013 09:34 AM, Paolo Bonzini wrote:
Il 19/05/2013 07:47, Sanjay Lal ha scritto:
- Add API to allow clients (QEMU etc.) to check whether the H/W
supports the MIPS VZ-ASE.
Why does this matter to userspace? Do the userspace have some way to
detect if the kernel is unmodified or minimally-modified?
There are (will be) two types of VM presented by MIPS KVM:
1) That provided by the initial patch where a faux-MIPS is emulated and
all kernel code must be in the USEG address space.
2) Real MIPS, addressing works as per the architecture specification.
Presumably the user-space client would like to know which of these are
supported, as well as be able to select the desired model.
I don't know the best way to do this, but I agree that
KVM_CAP_MIPS_VZ_ASE is probably not the best name for it.
My idea was to have the arg of the KVM_CREATE_VM ioctl specify the
desired style
David Daney
Paolo
Signed-off-by: Sanjay Lal <sanjayl@xxxxxxxxxxx>
---
include/uapi/linux/kvm.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index a5c86fc..5889e976 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -666,6 +666,7 @@ struct kvm_ppc_smmu_info {
#define KVM_CAP_IRQ_MPIC 90
#define KVM_CAP_PPC_RTAS 91
#define KVM_CAP_IRQ_XICS 92
+#define KVM_CAP_MIPS_VZ_ASE 93
#ifdef KVM_CAP_IRQ_ROUTING
--
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