From: Sean Christopherson <seanjc@google.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
Marc Zyngier <maz@kernel.org>,
Oliver Upton <oliver.upton@linux.dev>,
Huacai Chen <chenhuacai@kernel.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Anup Patel <anup@brainfault.org>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Sean Christopherson <seanjc@google.com>,
"Matthew Wilcox (Oracle)" <willy@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
Paul Moore <paul@paul-moore.com>,
James Morris <jmorris@namei.org>,
"Serge E. Hallyn" <serge@hallyn.com>
Cc: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
kvmarm@lists.linux.dev, linux-mips@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org,
linux-riscv@lists.infradead.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, linux-security-module@vger.kernel.org,
linux-kernel@vger.kernel.org,
Chao Peng <chao.p.peng@linux.intel.com>,
Fuad Tabba <tabba@google.com>,
Jarkko Sakkinen <jarkko@kernel.org>,
Yu Zhang <yu.c.zhang@linux.intel.com>,
Vishal Annapurve <vannapurve@google.com>,
Ackerley Tng <ackerleytng@google.com>,
Maciej Szmigiero <mail@maciej.szmigiero.name>,
Vlastimil Babka <vbabka@suse.cz>,
David Hildenbrand <david@redhat.com>,
Quentin Perret <qperret@google.com>,
Michael Roth <michael.roth@amd.com>, Wang <wei.w.wang@intel.com>,
Liam Merwick <liam.merwick@oracle.com>,
Isaku Yamahata <isaku.yamahata@gmail.com>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Subject: [RFC PATCH v11 21/29] KVM: selftests: Add helpers to convert guest memory b/w private and shared
Date: Tue, 18 Jul 2023 16:45:04 -0700 [thread overview]
Message-ID: <20230718234512.1690985-22-seanjc@google.com> (raw)
In-Reply-To: <20230718234512.1690985-1-seanjc@google.com>
From: Vishal Annapurve <vannapurve@google.com>
Signed-off-by: Vishal Annapurve <vannapurve@google.com>
Co-developed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
.../selftests/kvm/include/kvm_util_base.h | 48 +++++++++++++++++++
tools/testing/selftests/kvm/lib/kvm_util.c | 26 ++++++++++
2 files changed, 74 insertions(+)
diff --git a/tools/testing/selftests/kvm/include/kvm_util_base.h b/tools/testing/selftests/kvm/include/kvm_util_base.h
index f1de6a279561..1819787b773b 100644
--- a/tools/testing/selftests/kvm/include/kvm_util_base.h
+++ b/tools/testing/selftests/kvm/include/kvm_util_base.h
@@ -312,6 +312,54 @@ static inline void vm_enable_cap(struct kvm_vm *vm, uint32_t cap, uint64_t arg0)
vm_ioctl(vm, KVM_ENABLE_CAP, &enable_cap);
}
+static inline void vm_set_memory_attributes(struct kvm_vm *vm, uint64_t gpa,
+ uint64_t size, uint64_t attributes)
+{
+ struct kvm_memory_attributes attr = {
+ .attributes = attributes,
+ .address = gpa,
+ .size = size,
+ .flags = 0,
+ };
+
+ /*
+ * KVM_SET_MEMORY_ATTRIBUTES overwrites _all_ attributes. These flows
+ * need significant enhancements to support multiple attributes.
+ */
+ TEST_ASSERT(!attributes || attributes == KVM_MEMORY_ATTRIBUTE_PRIVATE,
+ "Update me to support multiple attributes!");
+
+ vm_ioctl(vm, KVM_SET_MEMORY_ATTRIBUTES, &attr);
+}
+
+
+static inline void vm_mem_set_private(struct kvm_vm *vm, uint64_t gpa,
+ uint64_t size)
+{
+ vm_set_memory_attributes(vm, gpa, size, KVM_MEMORY_ATTRIBUTE_PRIVATE);
+}
+
+static inline void vm_mem_set_shared(struct kvm_vm *vm, uint64_t gpa,
+ uint64_t size)
+{
+ vm_set_memory_attributes(vm, gpa, size, 0);
+}
+
+void vm_guest_mem_fallocate(struct kvm_vm *vm, uint64_t gpa, uint64_t size,
+ bool punch_hole);
+
+static inline void vm_guest_mem_punch_hole(struct kvm_vm *vm, uint64_t gpa,
+ uint64_t size)
+{
+ vm_guest_mem_fallocate(vm, gpa, size, true);
+}
+
+static inline void vm_guest_mem_allocate(struct kvm_vm *vm, uint64_t gpa,
+ uint64_t size)
+{
+ vm_guest_mem_fallocate(vm, gpa, size, false);
+}
+
void vm_enable_dirty_ring(struct kvm_vm *vm, uint32_t ring_size);
const char *vm_guest_mode_string(uint32_t i);
diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index b93717e62325..1283e24b76f1 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -1171,6 +1171,32 @@ void vm_mem_region_delete(struct kvm_vm *vm, uint32_t slot)
__vm_mem_region_delete(vm, memslot2region(vm, slot), true);
}
+void vm_guest_mem_fallocate(struct kvm_vm *vm, uint64_t gpa, uint64_t size,
+ bool punch_hole)
+{
+ struct userspace_mem_region *region;
+ uint64_t end = gpa + size - 1;
+ off_t fd_offset;
+ int mode, ret;
+
+ region = userspace_mem_region_find(vm, gpa, gpa);
+ TEST_ASSERT(region && region->region.flags & KVM_MEM_PRIVATE,
+ "Private memory region not found for GPA 0x%lx", gpa);
+
+ TEST_ASSERT(region == userspace_mem_region_find(vm, end, end),
+ "fallocate() for guest_memfd must act on a single memslot");
+
+ fd_offset = region->region.gmem_offset +
+ (gpa - region->region.guest_phys_addr);
+
+ mode = FALLOC_FL_KEEP_SIZE | (punch_hole ? FALLOC_FL_PUNCH_HOLE : 0);
+
+ ret = fallocate(region->region.gmem_fd, mode, fd_offset, size);
+ TEST_ASSERT(!ret, "fallocate() failed to %s at %lx[%lu], fd = %d, mode = %x, offset = %lx\n",
+ punch_hole ? "punch hole" : "allocate", gpa, size,
+ region->region.gmem_fd, mode, fd_offset);
+}
+
/* Returns the size of a vCPU's kvm_run structure. */
static int vcpu_mmap_sz(void)
{
--
2.41.0.255.g8b1d071c50-goog
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next prev parent reply other threads:[~2023-07-19 5:21 UTC|newest]
Thread overview: 131+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-18 23:44 [RFC PATCH v11 00/29] KVM: guest_memfd() and per-page attributes Sean Christopherson
2023-07-18 23:44 ` [RFC PATCH v11 01/29] KVM: Wrap kvm_gfn_range.pte in a per-action union Sean Christopherson
2023-07-19 13:39 ` Jarkko Sakkinen
2023-07-19 15:39 ` Sean Christopherson
2023-07-19 16:55 ` Paolo Bonzini
2023-07-26 20:22 ` Sean Christopherson
2023-07-21 6:26 ` Yan Zhao
2023-07-21 10:45 ` Xu Yilun
2023-07-25 18:05 ` Sean Christopherson
2023-07-18 23:44 ` [RFC PATCH v11 02/29] KVM: Tweak kvm_hva_range and hva_handler_t to allow reusing for gfn ranges Sean Christopherson
2023-07-19 17:12 ` Paolo Bonzini
2023-07-18 23:44 ` [RFC PATCH v11 03/29] KVM: Use gfn instead of hva for mmu_notifier_retry Sean Christopherson
2023-07-19 17:12 ` Paolo Bonzini
2023-07-18 23:44 ` [RFC PATCH v11 04/29] KVM: PPC: Drop dead code related to KVM_ARCH_WANT_MMU_NOTIFIER Sean Christopherson
2023-07-19 17:34 ` Paolo Bonzini
2023-07-18 23:44 ` [RFC PATCH v11 05/29] KVM: Convert KVM_ARCH_WANT_MMU_NOTIFIER to CONFIG_KVM_GENERIC_MMU_NOTIFIER Sean Christopherson
2023-07-19 7:31 ` Yuan Yao
2023-07-19 14:15 ` Sean Christopherson
2023-07-20 1:15 ` Yuan Yao
2023-07-18 23:44 ` [RFC PATCH v11 06/29] KVM: Introduce KVM_SET_USER_MEMORY_REGION2 Sean Christopherson
2023-07-21 9:03 ` Paolo Bonzini
2023-07-28 9:25 ` Quentin Perret
2023-07-29 0:03 ` Sean Christopherson
2023-07-31 9:30 ` Quentin Perret
2023-07-31 15:58 ` Paolo Bonzini
2023-07-18 23:44 ` [RFC PATCH v11 07/29] KVM: Add KVM_EXIT_MEMORY_FAULT exit Sean Christopherson
2023-07-19 7:54 ` Yuan Yao
2023-07-19 14:16 ` Sean Christopherson
2023-07-18 23:44 ` [RFC PATCH v11 08/29] KVM: Introduce per-page memory attributes Sean Christopherson
2023-07-20 8:09 ` Yuan Yao
2023-07-20 19:02 ` Isaku Yamahata
2023-07-20 20:20 ` Sean Christopherson
2023-07-21 10:57 ` Paolo Bonzini
2023-07-21 15:56 ` Xiaoyao Li
2023-07-24 4:43 ` Xu Yilun
2023-07-26 15:59 ` Sean Christopherson
2023-07-27 3:24 ` Xu Yilun
2023-08-02 20:31 ` Isaku Yamahata
2023-08-14 0:44 ` Binbin Wu
2023-08-14 21:54 ` Sean Christopherson
2023-07-18 23:44 ` [RFC PATCH v11 09/29] KVM: x86: Disallow hugepages when memory attributes are mixed Sean Christopherson
2023-07-21 11:59 ` Paolo Bonzini
2023-07-21 17:41 ` Sean Christopherson
2023-07-18 23:44 ` [RFC PATCH v11 10/29] mm: Add AS_UNMOVABLE to mark mapping as completely unmovable Sean Christopherson
2023-07-25 10:24 ` Kirill A . Shutemov
2023-07-25 12:51 ` Matthew Wilcox
2023-07-26 11:36 ` Kirill A . Shutemov
2023-07-28 16:02 ` Vlastimil Babka
2023-07-28 16:13 ` Paolo Bonzini
2023-09-01 8:23 ` Vlastimil Babka
2023-07-18 23:44 ` [RFC PATCH v11 11/29] security: Export security_inode_init_security_anon() for use by KVM Sean Christopherson
2023-07-19 2:14 ` Paul Moore
2023-07-31 10:46 ` Vlastimil Babka
2023-07-18 23:44 ` [RFC PATCH v11 12/29] KVM: Add KVM_CREATE_GUEST_MEMFD ioctl() for guest-specific backing memory Sean Christopherson
2023-07-19 17:21 ` Vishal Annapurve
2023-07-19 17:47 ` Sean Christopherson
2023-07-20 14:45 ` Xiaoyao Li
2023-07-20 15:14 ` Sean Christopherson
2023-07-20 21:28 ` Isaku Yamahata
2023-07-21 6:13 ` Yuan Yao
2023-07-21 22:27 ` Isaku Yamahata
2023-07-21 22:33 ` Sean Christopherson
2023-07-21 15:05 ` Xiaoyao Li
2023-07-21 15:42 ` Xiaoyao Li
2023-07-21 17:42 ` Sean Christopherson
2023-07-21 17:17 ` Paolo Bonzini
2023-07-21 17:50 ` Sean Christopherson
2023-07-25 15:09 ` Wang, Wei W
2023-07-25 16:03 ` Sean Christopherson
2023-07-26 1:51 ` Wang, Wei W
2023-07-31 16:23 ` Fuad Tabba
2023-07-26 17:18 ` Elliot Berman
2023-07-26 19:28 ` Sean Christopherson
2023-07-27 10:39 ` Fuad Tabba
2023-07-27 17:13 ` Sean Christopherson
2023-07-31 13:46 ` Fuad Tabba
2023-08-03 19:15 ` Ryan Afranji
2023-08-07 23:06 ` Ackerley Tng
2023-08-08 21:13 ` Sean Christopherson
2023-08-10 23:57 ` Vishal Annapurve
2023-08-11 17:44 ` Sean Christopherson
2023-08-15 18:43 ` Ackerley Tng
2023-08-15 20:03 ` Sean Christopherson
2023-08-21 17:30 ` Ackerley Tng
2023-08-21 19:33 ` Sean Christopherson
2023-08-28 22:56 ` Ackerley Tng
2023-08-29 2:53 ` Elliot Berman
2023-09-14 19:12 ` Sean Christopherson
2023-09-14 18:15 ` Sean Christopherson
2023-09-14 23:19 ` Ackerley Tng
2023-09-15 0:33 ` Sean Christopherson
2023-08-30 15:12 ` Binbin Wu
2023-08-30 16:44 ` Ackerley Tng
2023-09-01 3:45 ` Binbin Wu
2023-09-01 16:46 ` Ackerley Tng
2023-07-18 23:44 ` [RFC PATCH v11 13/29] KVM: Add transparent hugepage support for dedicated guest memory Sean Christopherson
2023-07-21 15:07 ` Paolo Bonzini
2023-07-21 17:13 ` Sean Christopherson
2023-09-06 22:10 ` Paolo Bonzini
2023-07-18 23:44 ` [RFC PATCH v11 14/29] KVM: x86/mmu: Handle page fault for private memory Sean Christopherson
2023-07-21 15:09 ` Paolo Bonzini
2023-07-18 23:44 ` [RFC PATCH v11 15/29] KVM: Drop superfluous __KVM_VCPU_MULTIPLE_ADDRESS_SPACE macro Sean Christopherson
2023-07-21 15:07 ` Paolo Bonzini
2023-07-18 23:44 ` [RFC PATCH v11 16/29] KVM: Allow arch code to track number of memslot address spaces per VM Sean Christopherson
2023-07-21 15:12 ` Paolo Bonzini
2023-07-18 23:45 ` [RFC PATCH v11 17/29] KVM: x86: Add support for "protected VMs" that can utilize private memory Sean Christopherson
2023-07-18 23:45 ` [RFC PATCH v11 18/29] KVM: selftests: Drop unused kvm_userspace_memory_region_find() helper Sean Christopherson
2023-07-21 15:14 ` Paolo Bonzini
2023-07-18 23:45 ` [RFC PATCH v11 19/29] KVM: selftests: Convert lib's mem regions to KVM_SET_USER_MEMORY_REGION2 Sean Christopherson
2023-07-18 23:45 ` [RFC PATCH v11 20/29] KVM: selftests: Add support for creating private memslots Sean Christopherson
2023-07-18 23:45 ` Sean Christopherson [this message]
2023-07-18 23:45 ` [RFC PATCH v11 22/29] KVM: selftests: Add helpers to do KVM_HC_MAP_GPA_RANGE hypercalls (x86) Sean Christopherson
2023-07-18 23:45 ` [RFC PATCH v11 23/29] KVM: selftests: Introduce VM "shape" to allow tests to specify the VM type Sean Christopherson
2023-07-18 23:45 ` [RFC PATCH v11 24/29] KVM: selftests: Add GUEST_SYNC[1-6] macros for synchronizing more data Sean Christopherson
2023-07-18 23:45 ` [RFC PATCH v11 25/29] KVM: selftests: Add x86-only selftest for private memory conversions Sean Christopherson
2023-07-18 23:45 ` [RFC PATCH v11 26/29] KVM: selftests: Add KVM_SET_USER_MEMORY_REGION2 helper Sean Christopherson
2023-07-18 23:45 ` [RFC PATCH v11 27/29] KVM: selftests: Expand set_memory_region_test to validate guest_memfd() Sean Christopherson
2023-08-07 23:17 ` Ackerley Tng
2023-07-18 23:45 ` [RFC PATCH v11 28/29] KVM: selftests: Add basic selftest for guest_memfd() Sean Christopherson
2023-08-07 23:20 ` Ackerley Tng
2023-08-18 23:03 ` Sean Christopherson
2023-08-07 23:25 ` Ackerley Tng
2023-08-18 23:01 ` Sean Christopherson
2023-08-21 19:49 ` Ackerley Tng
2023-07-18 23:45 ` [RFC PATCH v11 29/29] KVM: selftests: Test KVM exit behavior for private memory/access Sean Christopherson
2023-07-24 6:38 ` [RFC PATCH v11 00/29] KVM: guest_memfd() and per-page attributes Nikunj A. Dadhania
2023-07-24 17:00 ` Sean Christopherson
2023-07-26 11:20 ` Nikunj A. Dadhania
2023-07-26 14:24 ` Sean Christopherson
2023-07-27 6:42 ` Nikunj A. Dadhania
2023-08-03 11:03 ` Vlastimil Babka
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