fetch() has become a monster, with a zillion continues, breaks, and gotos.
Simplify it before Xiao adds even more.
Also fix the gpte validation race.
Avi Kivity (8):
KVM: MMU: Add link_shadow_page() helper
KVM: MMU: Use __set_spte to link shadow pages
KVM: MMU: Add drop_large_spte() helper
v2: s/drop_spte_if_large/drop_large_spte/g
KVM: MMU: Add validate_direct_spte() helper
KVM: MMU: Add validate_indirect_spte() helper
v2: add comments
make validate_indirect_spte() look at spte in its own level, not one
below (but adjust caller so no net effect)
KVM: MMU: Simplify spte fetch() function
v2: add comments
update 'sptep' and 'level' for last level
KVM: MMU: Validate all gptes during fetch, not just those used for
new pages
v3: fix top-level gpte validation oops
v2: validate top-level gpte (in root page)
KVM: MMU: Eliminate redundant temporaries in FNAME(fetch)
v2: new patch
arch/x86/kvm/mmu.c | 41 ++++++++++++
arch/x86/kvm/paging_tmpl.h | 157 +++++++++++++++++++++++---------------------
2 files changed, 122 insertions(+), 76 deletions(-)
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