On 06/22/2011 05:29 PM, Xiao Guangrong wrote:
Introduce vcpu_gva_to_gpa to translate the gva to gpa, we can use it
to cleanup the code between read emulation and write emulation
Signed-off-by: Xiao Guangrong<xiaoguangrong@xxxxxxxxxxxxxx>
---
arch/x86/kvm/x86.c | 38 +++++++++++++++++++++++++++++---------
1 files changed, 29 insertions(+), 9 deletions(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index eb27be4..c29ef96 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3944,6 +3944,27 @@ out:
}
EXPORT_SYMBOL_GPL(kvm_write_guest_virt_system);
+static int vcpu_gva_to_gpa(struct kvm_vcpu *vcpu, unsigned long gva,
+ gpa_t *gpa, struct x86_exception *exception,
+ bool write)
+{
+ u32 access = (kvm_x86_ops->get_cpl(vcpu) == 3) ? PFERR_USER_MASK : 0;
+
+ if (write)
+ access |= PFERR_WRITE_MASK;
Needs fetch as well so NX/SMEP can work.
+
+ *gpa = vcpu->arch.walk_mmu->gva_to_gpa(vcpu, gva, access, exception);
--
error compiling committee.c: too many arguments to function
--
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