[0/2] A couple of EL2 refcounts fixes

Message

Quentin Perret Oct. 5, 2021, 9:01 a.m. UTC

Hi all,

This addresses a couple of issues Will has found with the refcounting of
page-tables at EL2. Patch 01 fixes a nasty bug, and probably wants to go
in -stable. Patch 02 fixes a small inconsistency which made it harder to
find refcount-related bugs at EL2.

Feedback welcome !

Thanks,
Quentin

Quentin Perret (2):
  KVM: arm64: Fix host stage-2 PGD refcount
  KVM: arm64: Report corrupted refcount at EL2

 arch/arm64/kvm/hyp/include/nvhe/gfp.h |  1 +
 arch/arm64/kvm/hyp/nvhe/mem_protect.c |  6 +++++-
 arch/arm64/kvm/hyp/nvhe/page_alloc.c  | 15 +++++++++++++++
 3 files changed, 21 insertions(+), 1 deletion(-)