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From: Anish Moorthy <amoorthy@google.com>
To: seanjc@google.com, oliver.upton@linux.dev, kvm@vger.kernel.org,
	kvmarm@lists.linux.dev
Cc: pbonzini@redhat.com, maz@kernel.org, robert.hoo.linux@gmail.com,
	jthoughton@google.com, amoorthy@google.com, ricarkol@google.com,
	axelrasmussen@google.com, peterx@redhat.com,
	nadav.amit@gmail.com, isaku.yamahata@gmail.com,
	kconsul@linux.vnet.ibm.com
Subject: [PATCH v5 12/17] KVM: arm64: Enable KVM_CAP_USERFAULT_ON_MISSING
Date: Fri,  8 Sep 2023 22:28:59 +0000	[thread overview]
Message-ID: <20230908222905.1321305-13-amoorthy@google.com> (raw)
In-Reply-To: <20230908222905.1321305-1-amoorthy@google.com>

The relevant __gfn_to_pfn_memslot() call in user_mem_abort() already
uses MEMSLOT_ACCESS_NONATOMIC_MAY_UPGRADE.

Signed-off-by: Anish Moorthy <amoorthy@google.com>
---
 Documentation/virt/kvm/api.rst | 2 +-
 arch/arm64/kvm/Kconfig         | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst
index a74d721a18f6..b0b1124277e8 100644
--- a/Documentation/virt/kvm/api.rst
+++ b/Documentation/virt/kvm/api.rst
@@ -7788,7 +7788,7 @@ error/annotated fault.
 7.35 KVM_CAP_USERFAULT_ON_MISSING
 ---------------------------------
 
-:Architectures: x86
+:Architectures: x86, arm64
 :Returns: Informational only, -EINVAL on direct KVM_ENABLE_CAP.
 
 The presence of this capability indicates that userspace may set the
diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig
index 83c1e09be42e..d966a955d876 100644
--- a/arch/arm64/kvm/Kconfig
+++ b/arch/arm64/kvm/Kconfig
@@ -43,6 +43,7 @@ menuconfig KVM
 	select GUEST_PERF_EVENTS if PERF_EVENTS
 	select INTERVAL_TREE
 	select XARRAY_MULTI
+        select HAVE_KVM_USERFAULT_ON_MISSING
 	help
 	  Support hosting virtualized guest machines.
 
-- 
2.42.0.283.g2d96d420d3-goog


  parent reply	other threads:[~2023-09-08 22:30 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-08 22:28 [PATCH v5 00/17] Improve KVM + userfaultfd live migration via annotated memory faults Anish Moorthy
2023-09-08 22:28 ` [PATCH v5 01/17] KVM: Clarify documentation of hva_to_pfn()'s 'atomic' parameter Anish Moorthy
2023-09-08 22:28 ` [PATCH v5 02/17] KVM: Add docstrings to __kvm_read/write_guest_page() Anish Moorthy
2023-10-05  1:18   ` Sean Christopherson
2023-09-08 22:28 ` [PATCH v5 03/17] KVM: Simplify error handling in __gfn_to_pfn_memslot() Anish Moorthy
2023-09-08 22:28 ` [PATCH v5 04/17] KVM: Add KVM_CAP_MEMORY_FAULT_INFO Anish Moorthy
2023-10-05  1:14   ` Sean Christopherson
2023-10-05 18:45     ` Anish Moorthy
2023-10-05 22:13       ` Sean Christopherson
2023-10-10 22:58   ` David Matlack
2023-10-10 23:40     ` Sean Christopherson
2023-10-16 17:07       ` David Matlack
2023-10-16 19:14         ` Sean Christopherson
2023-09-08 22:28 ` [PATCH v5 05/17] KVM: Annotate -EFAULTs from kvm_vcpu_read/write_guest_page() Anish Moorthy
2023-09-14  8:04   ` kernel test robot
2023-10-05  1:53   ` Sean Christopherson
2023-10-05 23:03   ` Anish Moorthy
2023-09-08 22:28 ` [PATCH v5 06/17] KVM: x86: Annotate -EFAULTs from kvm_handle_error_pfn() Anish Moorthy
2023-10-05  1:26   ` Sean Christopherson
2023-10-05 23:57     ` Anish Moorthy
2023-10-06  0:36       ` Sean Christopherson
2023-09-08 22:28 ` [PATCH v5 07/17] KVM: arm64: Annotate -EFAULT from user_mem_abort() Anish Moorthy
2023-09-28 21:42   ` Anish Moorthy
2023-10-05  1:26   ` Sean Christopherson
2023-10-10 23:01   ` David Matlack
2023-09-08 22:28 ` [PATCH v5 08/17] KVM: Allow hva_pfn_fast() to resolve read faults Anish Moorthy
2023-09-08 22:28 ` [PATCH v5 09/17] KVM: Introduce KVM_CAP_USERFAULT_ON_MISSING without implementation Anish Moorthy
2023-10-10 23:16   ` David Matlack
2023-10-11 17:54     ` Anish Moorthy
2023-10-16 19:38       ` Sean Christopherson
2023-09-08 22:28 ` [PATCH v5 10/17] KVM: Implement KVM_CAP_USERFAULT_ON_MISSING by atomizing __gfn_to_pfn_memslot() calls Anish Moorthy
2023-10-05  1:44   ` Sean Christopherson
2023-10-05 18:58     ` Anish Moorthy
2023-10-06  0:17       ` Sean Christopherson
2023-10-11 22:04         ` Anish Moorthy
2023-11-01 21:53     ` Anish Moorthy
2023-11-01 22:03       ` Sean Christopherson
2023-11-01 22:25         ` Anish Moorthy
2023-11-01 22:39           ` David Matlack
2023-11-01 22:42           ` Sean Christopherson
2023-11-02 19:14       ` Anish Moorthy
2023-11-02 20:25         ` Anish Moorthy
2023-11-03 20:05         ` Sean Christopherson
2023-09-08 22:28 ` [PATCH v5 11/17] KVM: x86: Enable KVM_CAP_USERFAULT_ON_MISSING Anish Moorthy
2023-10-05  1:52   ` Sean Christopherson
2023-11-01 22:55     ` Anish Moorthy
2023-11-02 14:31       ` Sean Christopherson
2023-09-08 22:28 ` Anish Moorthy [this message]
2023-09-08 22:29 ` [PATCH v5 13/17] KVM: selftests: Report per-vcpu demand paging rate from demand paging test Anish Moorthy
2023-09-08 22:29 ` [PATCH v5 14/17] KVM: selftests: Allow many vCPUs and reader threads per UFFD in " Anish Moorthy
2023-09-08 22:29 ` [PATCH v5 15/17] KVM: selftests: Use EPOLL in userfaultfd_util reader threads and signal errors via TEST_ASSERT Anish Moorthy
2023-09-08 22:29 ` [PATCH v5 16/17] KVM: selftests: Add memslot_flags parameter to memstress_create_vm() Anish Moorthy
2023-09-08 22:29 ` [PATCH v5 17/17] KVM: selftests: Handle memory fault exits in demand_paging_test Anish Moorthy

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