Re: [PATCH] mm: Export follow_pte() for KVM so that KVM can stop using follow_pfn()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 04/02/21 18:16, Sean Christopherson wrote:
Export follow_pte() to fix build breakage when KVM is built as a module.
An in-flight KVM fix switches from follow_pfn() to follow_pte() in order
to grab the page protections along with the PFN.

Fixes: bd2fae8da794 ("KVM: do not assume PTE is writable after follow_pfn")
Cc: David Stevens <stevensd@xxxxxxxxxx>
Cc: Jann Horn <jannh@xxxxxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: kvm@xxxxxxxxxxxxxxx
Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---

Paolo, maybe you can squash this with the appropriate acks?

Indeed, you beat me by a minute. This change is why I hadn't sent out the patch yet.

Andrew or Jason, ok to squash this?

Paolo

  mm/memory.c | 1 +
  1 file changed, 1 insertion(+)

diff --git a/mm/memory.c b/mm/memory.c
index feff48e1465a..15cbd10afd59 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -4775,6 +4775,7 @@ int follow_pte(struct mm_struct *mm, unsigned long address,
  out:
  	return -EINVAL;
  }
+EXPORT_SYMBOL_GPL(follow_pte);
/**
   * follow_pfn - look up PFN at a user virtual address





[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]

  Powered by Linux