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Wed, 26 Aug 2026 16:05:37 -0700 (PDT) Date: Wed, 26 Aug 2026 16:05:08 -0700 In-Reply-To: <20260826230511.972824-1-seanjc@google.com> Mime-Version: 1.0 References: <20260826230511.972824-1-seanjc@google.com> X-Mailer: git-send-email 2.55.0.887.g758fc8c411-goog Message-ID: <20260826230511.972824-18-seanjc@google.com> Subject: [PATCH 17/20] KVM: selftests: Take the memory region type, not memslot, in page allocators From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Sean Christopherson , Paolo Bonzini , Tianrui Zhao , Bibo Mao , Huacai Chen , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Christian Borntraeger , Janosch Frank , Claudio Imbrenda Cc: Fuad Tabba , Joey Gouly , Steffen Eiden , Suzuki K Poulose , Zenghui Yu , Atish Patra , Alexandre Ghiti , David Hildenbrand , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, loongarch@lists.linux.dev, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Nicholas Piggin , Ritesh Harjani X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260826_160540_103438_9ECEBFF4 X-CRM114-Status: GOOD ( 13.28 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Take the memory region type instead of the memslot in all page allocator APIs, except for the innermost quad-underscores function. This will allow automatically selecting the minimum GPA based on the allocation type, which can't be done using the memslot due to all regions sharing a single memslot by default. PowerPC support will also leverage the type to ensure that page table allocations are naturally aligned. No functional change intended. Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/arm64/vgic_lpi_stress.c | 12 ++++++------ tools/testing/selftests/kvm/include/kvm_util.h | 13 +++++++------ tools/testing/selftests/kvm/lib/kvm_util.c | 10 +++++++--- tools/testing/selftests/kvm/lib/x86/processor.c | 2 +- .../testing/selftests/kvm/set_memory_region_test.c | 2 +- .../kvm/x86/smaller_maxphyaddr_emulation_test.c | 2 +- 6 files changed, 23 insertions(+), 18 deletions(-) diff --git a/tools/testing/selftests/kvm/arm64/vgic_lpi_stress.c b/tools/testing/selftests/kvm/arm64/vgic_lpi_stress.c index 9865b204fdeb..a45c0849a47a 100644 --- a/tools/testing/selftests/kvm/arm64/vgic_lpi_stress.c +++ b/tools/testing/selftests/kvm/arm64/vgic_lpi_stress.c @@ -192,27 +192,27 @@ static void setup_test_data(void) test_data.device_table = vm_phy_pages_alloc(vm, pages_per_64k, gpa_base, - TEST_MEMSLOT_INDEX); + MEM_REGION_TEST_EXTRA); test_data.collection_table = vm_phy_pages_alloc(vm, pages_per_64k, gpa_base, - TEST_MEMSLOT_INDEX); + MEM_REGION_TEST_EXTRA); cmdq_base = vm_phy_pages_alloc(vm, pages_per_64k, gpa_base, - TEST_MEMSLOT_INDEX); + MEM_REGION_TEST_EXTRA); virt_map(vm, cmdq_base, cmdq_base, pages_per_64k); test_data.cmdq_base = cmdq_base; test_data.cmdq_base_va = (void *)cmdq_base; test_data.itt_tables = vm_phy_pages_alloc(vm, pages_per_64k * nr_devices, - gpa_base, TEST_MEMSLOT_INDEX); + gpa_base, MEM_REGION_TEST_EXTRA); test_data.lpi_prop_table = vm_phy_pages_alloc(vm, pages_per_64k, - gpa_base, TEST_MEMSLOT_INDEX); + gpa_base, MEM_REGION_TEST_EXTRA); configure_lpis(); test_data.lpi_pend_tables = vm_phy_pages_alloc(vm, pages_per_64k * nr_cpus, - gpa_base, TEST_MEMSLOT_INDEX); + gpa_base, MEM_REGION_TEST_EXTRA); sync_global_to_guest(vm, test_data); } diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h index f4f4f360a10b..783f060faf9e 100644 --- a/tools/testing/selftests/kvm/include/kvm_util.h +++ b/tools/testing/selftests/kvm/include/kvm_util.h @@ -1052,30 +1052,31 @@ const char *exit_reason_str(unsigned int exit_reason); gpa_t ____vm_phy_pages_alloc(struct kvm_vm *vm, size_t nr_pages, gpa_t min_gpa, u32 memslot, bool protected, bool naturally_aligned); gpa_t __vm_phy_pages_alloc(struct kvm_vm *vm, size_t nr_pages, gpa_t min_gpa, - u32 memslot, bool protected); + enum kvm_mem_region_type type, bool protected); static inline gpa_t vm_phy_pages_alloc(struct kvm_vm *vm, size_t nr_pages, - gpa_t min_gpa, u32 memslot) + gpa_t min_gpa, + enum kvm_mem_region_type type) { /* * By default, allocate memory as protected for VMs that support * protected memory, as the majority of memory for such VMs is * protected, i.e. using shared memory is effectively opt-in. */ - return __vm_phy_pages_alloc(vm, nr_pages, min_gpa, memslot, + return __vm_phy_pages_alloc(vm, nr_pages, min_gpa, type, vm_arch_has_protected_memory(vm)); } static inline gpa_t vm_phy_page_alloc(struct kvm_vm *vm, gpa_t min_gpa, - u32 memslot) + enum kvm_mem_region_type type) { - return vm_phy_pages_alloc(vm, 1, min_gpa, memslot); + return vm_phy_pages_alloc(vm, 1, min_gpa, type); } static inline gpa_t vm_alloc_page_table_pages(struct kvm_vm *vm, size_t nr_pages) { return vm_phy_pages_alloc(vm, nr_pages, KVM_GUEST_PAGE_TABLE_MIN_PADDR, - vm->memslots[MEM_REGION_PT]); + MEM_REGION_PT); } static inline gpa_t vm_alloc_page_table(struct kvm_vm *vm) diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c index 781af2928d04..e500d1799151 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util.c +++ b/tools/testing/selftests/kvm/lib/kvm_util.c @@ -1475,7 +1475,7 @@ static gva_t ____vm_alloc(struct kvm_vm *vm, size_t sz, gva_t min_gva, virt_pgd_alloc(vm); gpa_t gpa = __vm_phy_pages_alloc(vm, pages, KVM_UTIL_MIN_PFN * vm->page_size, - vm->memslots[type], protected); + type, protected); /* * Find an unused range of virtual page addresses of at least @@ -2088,9 +2088,13 @@ gpa_t ____vm_phy_pages_alloc(struct kvm_vm *vm, size_t nr_pages, gpa_t min_gpa, } gpa_t __vm_phy_pages_alloc(struct kvm_vm *vm, size_t nr_pages, gpa_t min_gpa, - u32 memslot, bool protected) + enum kvm_mem_region_type type, bool protected) { - return ____vm_phy_pages_alloc(vm, nr_pages, min_gpa, memslot, protected, false); + TEST_ASSERT(type < NR_MEM_REGIONS, + "Invalid memory region type '%u'", type); + + return ____vm_phy_pages_alloc(vm, nr_pages, min_gpa, vm->memslots[type], + protected, false); } /* diff --git a/tools/testing/selftests/kvm/lib/x86/processor.c b/tools/testing/selftests/kvm/lib/x86/processor.c index b988eea373ad..39d9ca6ceb1d 100644 --- a/tools/testing/selftests/kvm/lib/x86/processor.c +++ b/tools/testing/selftests/kvm/lib/x86/processor.c @@ -1475,7 +1475,7 @@ void setup_smram(struct kvm_vm *vm, struct kvm_vcpu *vcpu, gpa_t smram_gpa, smram_gpa, SMRAM_MEMSLOT, SMRAM_PAGES); TEST_ASSERT(vm_phy_pages_alloc(vm, SMRAM_PAGES, smram_gpa, - SMRAM_MEMSLOT) == smram_gpa, + MEM_REGION_TEST_EXTRA) == smram_gpa, "Could not allocate guest physical addresses for SMRAM"); memset(addr_gpa2hva(vm, smram_gpa), 0x0, SMRAM_SIZE); diff --git a/tools/testing/selftests/kvm/set_memory_region_test.c b/tools/testing/selftests/kvm/set_memory_region_test.c index 9d21594e2f81..160bbe3d7203 100644 --- a/tools/testing/selftests/kvm/set_memory_region_test.c +++ b/tools/testing/selftests/kvm/set_memory_region_test.c @@ -124,7 +124,7 @@ static struct kvm_vm *spawn_vm(struct kvm_vcpu **vcpu, pthread_t *vcpu_thread, * Allocate and map two pages so that the GPA accessed by guest_code() * stays valid across the memslot move. */ - gpa = vm_phy_pages_alloc(vm, 2, MEM_REGION_GPA, MEM_REGION_SLOT); + gpa = vm_phy_pages_alloc(vm, 2, MEM_REGION_GPA, MEM_REGION_TEST_EXTRA); TEST_ASSERT(gpa == MEM_REGION_GPA, "Failed vm_phy_pages_alloc\n"); virt_map(vm, MEM_REGION_GPA, MEM_REGION_GPA, 2); diff --git a/tools/testing/selftests/kvm/x86/smaller_maxphyaddr_emulation_test.c b/tools/testing/selftests/kvm/x86/smaller_maxphyaddr_emulation_test.c index b21798a385ca..4e125eb5e0cf 100644 --- a/tools/testing/selftests/kvm/x86/smaller_maxphyaddr_emulation_test.c +++ b/tools/testing/selftests/kvm/x86/smaller_maxphyaddr_emulation_test.c @@ -67,7 +67,7 @@ int main(int argc, char *argv[]) MEM_REGION_SIZE / PAGE_SIZE); gpa = vm_phy_pages_alloc(vm, MEM_REGION_SIZE / PAGE_SIZE, - MEM_REGION_GPA, MEM_REGION_SLOT); + MEM_REGION_GPA, MEM_REGION_TEST_EXTRA); TEST_ASSERT(gpa == MEM_REGION_GPA, "Failed vm_phy_pages_alloc"); virt_map(vm, MEM_REGION_GVA, MEM_REGION_GPA, 1); hva = addr_gpa2hva(vm, MEM_REGION_GPA); -- 2.55.0.887.g758fc8c411-goog _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv