From: Paul Durrant pdurrant@amazon.com
This series has some small fixes from what was in version 10 [1]:
* KVM: pfncache: allow a cache to be activated with a fixed (userspace) HVA
This required a small fix to kvm_gpc_check() for an error that was introduced in version 8.
* KVM: xen: separate initialization of shared_info cache and content
This accidentally regressed a fix in commit 5d6d6a7d7e66a ("KVM: x86: Refine calculation of guest wall clock to use a single TSC read").
* KVM: xen: re-initialize shared_info if guest (32/64-bit) mode is set
This mistakenly removed the initialization of shared_info from the code setting the KVM_XEN_ATTR_TYPE_SHARED_INFO attribute, which broke the self- tests.
* KVM: xen: split up kvm_xen_set_evtchn_fast()
This had a /32 and a /64 swapped in set_vcpu_info_evtchn_pending().
[1] https://lore.kernel.org/kvm/20231204144334.910-1-paul@xen.org/
Paul Durrant (19): KVM: pfncache: Add a map helper function KVM: pfncache: remove unnecessary exports KVM: xen: mark guest pages dirty with the pfncache lock held KVM: pfncache: add a mark-dirty helper KVM: pfncache: remove KVM_GUEST_USES_PFN usage KVM: pfncache: stop open-coding offset_in_page() KVM: pfncache: include page offset in uhva and use it consistently KVM: pfncache: allow a cache to be activated with a fixed (userspace) HVA KVM: xen: separate initialization of shared_info cache and content KVM: xen: re-initialize shared_info if guest (32/64-bit) mode is set KVM: xen: allow shared_info to be mapped by fixed HVA KVM: xen: allow vcpu_info to be mapped by fixed HVA KVM: selftests / xen: map shared_info using HVA rather than GFN KVM: selftests / xen: re-map vcpu_info using HVA rather than GPA KVM: xen: advertize the KVM_XEN_HVM_CONFIG_SHARED_INFO_HVA capability KVM: xen: split up kvm_xen_set_evtchn_fast() KVM: xen: don't block on pfncache locks in kvm_xen_set_evtchn_fast() KVM: pfncache: check the need for invalidation under read lock first KVM: xen: allow vcpu_info content to be 'safely' copied
Documentation/virt/kvm/api.rst | 53 ++- arch/x86/kvm/x86.c | 7 +- arch/x86/kvm/xen.c | 360 +++++++++++------- include/linux/kvm_host.h | 40 +- include/linux/kvm_types.h | 8 - include/uapi/linux/kvm.h | 9 +- .../selftests/kvm/x86_64/xen_shinfo_test.c | 59 ++- virt/kvm/pfncache.c | 188 ++++----- 8 files changed, 466 insertions(+), 258 deletions(-)
base-commit: f2a3fb7234e52f72ff4a38364dbf639cf4c7d6c6