Carsten asked for the same on s390 which brings me to resend ppc patches
neither rejected, commented nor accepted yet
Subject: [PATCH][RESEND] portability: add CONFIG_KVM_HAS_PIO around pio_data
From: Hollis Blanchard <[EMAIL PROTECTED]>
Define and use CONFIG_KVM_HAS_PIO so that non-x86 don't need pio_data
in kvm_arch_vcpu.
Signed-off-by: Christian Ehrhardt <[EMAIL PROTECTED]>
Signed-off-by: Hollis Blanchard <[EMAIL PROTECTED]>
Acked-by: Carsten Otte <[EMAIL PROTECTED]>
arch/x86/kvm/Kconfig | 5 +++++
virt/kvm/kvm_main.c | 2 ++
2 files changed, 7 insertions(+)
diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index 4086080..e31ac6e 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -33,9 +33,13 @@ config KVM
If unsure, say N.
+config KVM_HAS_PIO
+ bool
+
config KVM_INTEL
tristate "KVM for Intel processors support"
depends on KVM
+ select KVM_HAS_PIO
---help---
Provides support for KVM on Intel processors equipped with the VT
extensions.
@@ -43,6 +47,7 @@ config KVM_INTEL
config KVM_AMD
tristate "KVM for AMD processors support"
depends on KVM
+ select KVM_HAS_PIO
---help---
Provides support for KVM on AMD processors equipped with the AMD-V
(SVM) extensions.
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 4295623..f6e4232 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -677,8 +677,10 @@ static int kvm_vcpu_fault(struct vm_area_struct *vma,
struct vm_fault *vmf)
if (vmf->pgoff == 0)
page = virt_to_page(vcpu->run);
+#ifdef CONFIG_KVM_HAS_PIO
else if (vmf->pgoff == KVM_PIO_PAGE_OFFSET)
page = virt_to_page(vcpu->arch.pio_data);
+#endif /* CONFIG_KVM_HAS_PIO */
else
return VM_FAULT_SIGBUS;
get_page(page);
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