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Wed, 26 Aug 2026 16:05:13 -0700 (PDT) Date: Wed, 26 Aug 2026 16:04:51 -0700 Mime-Version: 1.0 X-Mailer: git-send-email 2.55.0.887.g758fc8c411-goog Message-ID: <20260826230511.972824-1-seanjc@google.com> Subject: [PATCH 00/20] KVM: selftests: PPC pre-enabling 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_160515_667865_B93E46F2 X-CRM114-Status: GOOD ( 11.35 ) 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 This is a big pile of cleanups and refactoring to prepare for PPC support in KVM selftests. PPC has paging modes that require multi-page page tables, and those page tables need to be naturally aligned. The original proposal was to plumb in an @align param to the page allocators[*], but I didn't love the idea of adding another rarely used param to the allocators. Reworking the APIs to take a region type requires a fair bit of churn, and was more painful than expected as I didn't realize just how many one-off tests did weird things, but overall I think it's worth it? If only to keep cutting down on the use of magic memslot numbers in tests. This needs explicit testing on s390. I tested on arm64 and x86, and given the number of failures I had to wade through, I wouldn't be at all suprised if I broke something subtle on s390 as well. I'm less concerned about RISC-V and LoongArch as they don't have any custom tests that are affected (which is where I got burned). [*] https://lore.kernel.org/all/df86b5ccdbdafc3509d9538bd5e6796737bab2db.1781093720.git.ritesh.list@gmail.com Nicholas Piggin (1): KVM: selftests: Use goto instead of do-while to retry finding unused physical pages Sean Christopherson (19): KVM: selftests: Use MEM_REGION_PT memslot instead of '0' for s390 regions/segments KVM: selftests: Bump the minimum GPA for page tables to 0x200000 KVM: selftests: Use vm_alloc_page_table() to allocate LoongArch page tables KVM: selftests: Rename "num" param to "nr_pages" for physical page allocators KVM: selftests: Extend page allocator to support naturally aligned allocations KVM: selftests: Make the single-page allocator APIs static inline KVM: selftests: Use the innermost page allocator API in the memslot perf test KVM: selftests: Use the innermost page allocator API in s390's IRQ routing test KVM: selftests: Add a wrapper API to allocate multiple page table pages KVM: selftests: Initialize vm->memslots[] with invalid memslots during creation KVM: selftests: Add APIs to override memory region types with custom memslots KVM: selftests: Add TEST_EXTRA memory region type for "special" memslots KVM: selftests: Use TEST_EXTRA region in arm64's vGIC LPI stress test KVM: selftests: Use TEST_EXTRA region in x86's smaller MAXPHYADDR test KVM: selftests: Use TEST_EXTRA region in set memory region test KVM: selftests: Take the memory region type, not memslot, in page allocators KVM: selftests: Use TEST_ASSERT(), not assert(), in vm_get_mem_region() KVM: selftests: Automatically pick min_gpa for allocations based on region type KVM: selftests: Add arch hook to force page tables to be naturally aligned .../selftests/kvm/arm64/page_fault_test.c | 18 ++- .../selftests/kvm/arm64/vgic_lpi_stress.c | 19 ++- .../testing/selftests/kvm/include/kvm_util.h | 106 +++++++++++++-- tools/testing/selftests/kvm/include/x86/smm.h | 2 +- .../selftests/kvm/lib/arm64/processor.c | 4 +- tools/testing/selftests/kvm/lib/kvm_util.c | 127 +++++++++++------- .../selftests/kvm/lib/loongarch/processor.c | 5 +- .../selftests/kvm/lib/riscv/processor.c | 4 +- .../selftests/kvm/lib/s390/processor.c | 7 +- .../testing/selftests/kvm/lib/x86/processor.c | 15 ++- .../testing/selftests/kvm/memslot_perf_test.c | 3 +- tools/testing/selftests/kvm/s390/cmma_test.c | 19 +-- .../testing/selftests/kvm/s390/irq_routing.c | 2 +- .../selftests/kvm/set_memory_region_test.c | 8 +- .../x86/smaller_maxphyaddr_emulation_test.c | 9 +- 15 files changed, 219 insertions(+), 129 deletions(-) base-commit: 76671054f9a1ff6abb976583cd8da37650acdc97 -- 2.55.0.887.g758fc8c411-goog _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv