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From: Paul Durrant <paul@xen.org>
To: Paolo Bonzini <pbonzini@redhat.com>,
	Jonathan Corbet <corbet@lwn.net>,
	Sean Christopherson <seanjc@google.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>,
	Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	x86@kernel.org,
	"H. Peter Anvin" <hpa@zytor.com>,
	David Woodhouse <dwmw2@infradead.org>,
	Paul Durrant <paul@xen.org>,
	Shuah Khan <shuah@kernel.org>,
	kvm@vger.kernel.org,
	linux-doc@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	linux-kselftest@vger.kernel.org
Subject: [PATCH v12 00/20] KVM: xen: update shared_info and vcpu_info handling
Date: Mon, 15 Jan 2024 12:56:47 +0000
Message-Id: <20240115125707.1183-1-paul@xen.org>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

From: Paul Durrant <pdurrant@amazon.com>

This series has one small fix to what was in v11 [1]:

* KVM: xen: re-initialize shared_info if guest (32/64-bit) mode is set

The v11 patch failed to set the return code of the ioctl if the mode
was not actually changed, leading to a spurious failure.

This version of the series also contains a new bug-fix to the pfncache
code from David Woodhouse.

[1] https://lore.kernel.org/kvm/20231219161109.1318-1-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: 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                            | 356 +++++++++++-------
 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                           | 340 +++++++++--------
 8 files changed, 535 insertions(+), 337 deletions(-)


base-commit: 1c6d984f523f67ecfad1083bb04c55d91977bb15
-- 
2.39.2