Hi Suzuki,
On 27/04/18 16:58, Suzuki K Poulose wrote:
On 27/04/18 16:22, Suzuki K Poulose wrote:
On 26/04/18 14:35, Julien Grall wrote:
Hi Suzuki,
On 27/03/18 14:15, Suzuki K Poulose wrote:
Right now the stage2 page table for a VM is hard coded, assuming
an IPA of 40bits. As we are about to add support for per VM IPA,
prepare the stage2 page table helpers to accept the kvm instance
to make the right decision for the VM. No functional changes.
diff --git a/arch/arm/include/asm/kvm_arm.h
b/arch/arm/include/asm/kvm_arm.h
index 3ab8b37..c3f1f9b 100644
--- a/arch/arm/include/asm/kvm_arm.h
+++ b/arch/arm/include/asm/kvm_arm.h
@@ -133,8 +133,7 @@
* space.
*/
#define KVM_PHYS_SHIFT (40)
-#define KVM_PHYS_SIZE (_AC(1, ULL) << KVM_PHYS_SHIFT)
-#define KVM_PHYS_MASK (KVM_PHYS_SIZE - _AC(1, ULL))
I assume you are moving them to kvm_mmu.h in order to match the arm64
side, right? If so, would not it make sense to make KVM_PHYS_SHIFT
with it?
[...]
I am moving all the macros that depend on the "kvm" instance to
kvm_mmu.h.
I will see if I can move the KVM_PHYS_SHIFT without much trouble.
It looks like we can't do that easily. KVM_PHYS_SHIFT is used for KVM_T0SZ
on arm, even though that can be simply hard coded to avoid the
dependency on
KVM_PHYS_SHIFT (like we did for arm64, T0SZ is defined to 24). I would
leave it
as it is to avoid the noise.
Fine. That was only a suggestion :).
Cheers,
--
Julien Grall
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