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Peter Anvin" , David Woodhouse , Paul Durrant , Shuah Khan , kvm@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH v13 00/21] KVM: xen: update shared_info and vcpu_info handling Date: Thu, 15 Feb 2024 15:28:55 +0000 Message-Id: <20240215152916.1158-1-paul@xen.org> X-Mailer: git-send-email 2.39.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1790980128507123094 X-GMAIL-MSGID: 1790980128507123094 From: Paul Durrant This series contains a new patch from Sean added since v12 [1]: * KVM: s390: Refactor kvm_is_error_gpa() into kvm_is_gpa_in_memslot() This frees up the function name kvm_is_error_gpa() such that it can then be re-defined in: * KVM: pfncache: allow a cache to be activated with a fixed (userspace) HVA to be used for a simple GPA validation helper function. The patch also now contains an either/or address check for GPA versus HVA in __kvm_gpc_refresh(). In: * KVM: pfncache: add a mark-dirty helper The function name has been changed from kvm_gpc_mark_dirty() to kvm_gpc_mark_dirty_in_slot(). In: * KVM: x86/xen: allow shared_info to be mapped by fixed HVA missing HVA validation checks have been added and the 'hva == 0' test has been changed to '!hva'. The KVM_XEN_ATTR_TYPE_SHARED_INFO and KVM_XEN_ATTR_TYPE_SHARED_INFO_HVA cases are still largely handled as one though as separation leads to duplicate calls to kvm_xen_shared_info_init() which looks messy. Also, patches with a 'xen' prefix have now been modified to have a 'x86/xen' prefix and patches with a 'selftests / xen' prefix have been modified to have simply a 'selftests' prefix. [1] https://lore.kernel.org/kvm/20240115125707.1183-1-paul@xen.org/ David Woodhouse (1): KVM: pfncache: rework __kvm_gpc_refresh() to fix locking issues Paul Durrant (19): KVM: pfncache: Add a map helper function KVM: pfncache: remove unnecessary exports KVM: x86/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: x86/xen: separate initialization of shared_info cache and content KVM: x86/xen: re-initialize shared_info if guest (32/64-bit) mode is set KVM: x86/xen: allow shared_info to be mapped by fixed HVA KVM: x86/xen: allow vcpu_info to be mapped by fixed HVA KVM: selftests: map Xen's shared_info page using HVA rather than GFN KVM: selftests: re-map Xen's vcpu_info using HVA rather than GPA KVM: x86/xen: advertize the KVM_XEN_HVM_CONFIG_SHARED_INFO_HVA capability KVM: x86/xen: split up kvm_xen_set_evtchn_fast() KVM: x86/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: x86/xen: allow vcpu_info content to be 'safely' copied Sean Christopherson (1): KVM: s390: Refactor kvm_is_error_gpa() into kvm_is_gpa_in_memslot() Documentation/virt/kvm/api.rst | 53 ++- arch/s390/kvm/diag.c | 2 +- arch/s390/kvm/gaccess.c | 14 +- arch/s390/kvm/kvm-s390.c | 4 +- arch/s390/kvm/priv.c | 4 +- arch/s390/kvm/sigp.c | 2 +- arch/x86/kvm/x86.c | 7 +- arch/x86/kvm/xen.c | 361 +++++++++++------ include/linux/kvm_host.h | 49 ++- 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 | 382 ++++++++++-------- 13 files changed, 591 insertions(+), 363 deletions(-) base-commit: 7455665a3521aa7b56245c0a2810f748adc5fdd4