Hi Paolo and Sean,
The two patches are fixups to RCU related issues reported by sparse.
Patch 1 was reported by kernel test robot related to dereference of
mirrored sptep.
Patch 2 was a result of running sparse locally with error message:
"error: incompatible types in comparison expression (different
address spaces)" in kvm_gmem_get_file() and __kvm_gmem_get_pfn().
Initially, I wanted to fix it by using rcu_access_pointer() to
fetch the rcu-protected pointer slot->gmem.file.
However, after further analysis, I think it's not necessary to
rely on RCU to protect slot->gmem.file.
Please kindly take a look to see if they are appropriate.
Thanks
Yan
Rick Edgecombe (1):
KVM: x86/tdp_mmu: Use rcu_dereference() to protect sptep for
dereferencing
Yan Zhao (1):
KVM: guest_memfd: Remove RCU-protected attribute from slot->gmem.file
arch/x86/kvm/mmu/spte.h | 4 ++--
arch/x86/kvm/mmu/tdp_mmu.c | 6 +++---
include/linux/kvm_host.h | 2 +-
virt/kvm/guest_memfd.c | 23 ++++++++++-------------
4 files changed, 16 insertions(+), 19 deletions(-)
base-commit: 49c492a89914b02fa5011d9ea9848318c6c98dd9
--
2.43.2
