Anthony Liguori wrote:
+static int kvm_hypercall_mmu_write(struct kvm_vcpu *vcpu, gva_t addr,
+ unsigned long size, unsigned long a0,
+ unsigned long a1)
+{
+ gpa_t gpa = vcpu->mmu.gva_to_gpa(vcpu, addr);
+ u64 value;
+
+ if (gpa == UNMAPPED_GVA)
+ return -EFAULT;
+ if (size == 1) {
+ if (!emulator_write_phys(vcpu, gpa, &a0, sizeof(a0)))
+ return -EFAULT;
+ } else if (size == 2) {
+ value = (u64)a1 << 32 | a0;
+ if (!emulator_write_phys(vcpu, gpa, &value, sizeof(value)))
+ return -EFAULT;
+ } else
+ return -E2BIG;
+
+ return 0;
+}
Hypercalls should return kvm-specific error codes (defined in
include/linux/kvm_para.h), not Linux error codes, as they could be used
in operating systems which have different values for E2BIG and friends.
+static void kvm_pte_clear(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep)
+{
+ pte_t pte = {0};
Surely there's a nice macro for creating a pte from an int?
Any performance measurement?
--
error compiling committee.c: too many arguments to function
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