KVM: PPC: E500: Replace current->mm by kvm->mm (f41c4989) · Commits · 戴 / test

Given that in kvm_create_vm() there is: kvm->mm = current->mm; And that on every kvm_*_ioctl we have: if (kvm->mm != current->mm) return -EIO; I see no reason to keep using current->mm instead of kvm->mm. By doing so, we would reduce the use of 'global' variables on code, relying more in the contents of kvm struct. Signed-off-by:

Leonardo Bras <leonardo@linux.ibm.com> Signed-off-by:

Paul Mackerras <paulus@ozlabs.org>

arch/powerpc/kvm/e500_mmu_host.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -355,9 +355,9 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,

		if (tlbsel == 1) {
		struct vm_area_struct *vma;
		down_read(&current->mm->mmap_sem);
		down_read(&kvm->mm->mmap_sem);

		vma = find_vma(current->mm, hva);
		vma = find_vma(kvm->mm, hva);
		if (vma && hva >= vma->vm_start &&
		(vma->vm_flags & VM_PFNMAP)) {
		/*
		@@ -441,7 +441,7 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
		tsize = max(BOOK3E_PAGESZ_4K, tsize & ~1);
		}

		up_read(&current->mm->mmap_sem);
		up_read(&kvm->mm->mmap_sem);
		}

		if (likely(!pfnmap)) {

Admin message