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2024-04-26KVM: riscv: selftests: Add a test for PMU snapshot functionalityAtish Patra1-0/+25
Verify PMU snapshot functionality by setting up the shared memory correctly and reading the counter values from the shared memory instead of the CSR. Reviewed-by: Andrew Jones <[email protected]> Reviewed-by: Anup Patel <[email protected]> Signed-off-by: Atish Patra <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Anup Patel <[email protected]>
2024-04-26KVM: riscv: selftests: Add SBI PMU extension definitionsAtish Patra1-0/+66
The SBI PMU extension definition is required for upcoming SBI PMU selftests. Reviewed-by: Andrew Jones <[email protected]> Reviewed-by: Anup Patel <[email protected]> Signed-off-by: Atish Patra <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Anup Patel <[email protected]>
2024-04-26KVM: riscv: selftests: Add helper functions for extension checksAtish Patra1-0/+10
__vcpu_has_ext can check both SBI and ISA extensions when the first argument is properly converted to SBI/ISA extension IDs. Introduce two helper functions to make life easier for developers so they don't have to worry about the conversions. Replace the current usages as well with new helpers. Reviewed-by: Andrew Jones <[email protected]> Signed-off-by: Atish Patra <[email protected]> Reviewed-by: Anup Patel <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Anup Patel <[email protected]>
2024-04-26KVM: riscv: selftests: Move sbi definitions to its own header fileAtish Patra3-39/+51
The SBI definitions will continue to grow. Move the sbi related definitions to its own header file from processor.h Suggested-by: Andrew Jones <[email protected]> Reviewed-by: Andrew Jones <[email protected]> Signed-off-by: Atish Patra <[email protected]> Reviewed-by: Anup Patel <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Anup Patel <[email protected]>
2024-03-11Merge tag 'kvm-x86-selftests-6.9' of https://github.com/kvm-x86/linux into HEADPaolo Bonzini1-0/+7
KVM selftests changes for 6.9: - Add macros to reduce the amount of boilerplate code needed to write "simple" selftests, and to utilize selftest TAP infrastructure, which is especially beneficial for KVM selftests with multiple testcases. - Add basic smoke tests for SEV and SEV-ES, along with a pile of library support for handling private/encrypted/protected memory. - Fix benign bugs where tests neglect to close() guest_memfd files.
2024-03-06KVM: riscv: selftests: Add sstc timer testHaibo Xu2-0/+81
Add a KVM selftests to validate the Sstc timer functionality. The test was ported from arm64 arch timer test. Signed-off-by: Haibo Xu <[email protected]> Reviewed-by: Andrew Jones <[email protected]> Signed-off-by: Anup Patel <[email protected]>
2024-03-06KVM: riscv: selftests: Change vcpu_has_ext to a common functionHaibo Xu1-0/+2
Move vcpu_has_ext to the processor.c and rename it to __vcpu_has_ext so that other test cases can use it for vCPU extension check. Signed-off-by: Haibo Xu <[email protected]> Reviewed-by: Andrew Jones <[email protected]> Signed-off-by: Anup Patel <[email protected]>
2024-03-06KVM: riscv: selftests: Add exception handling supportHaibo Xu1-0/+50
Add the infrastructure for guest exception handling in riscv selftests. Customized handlers can be enabled by vm_install_exception_handler(vector) or vm_install_interrupt_handler(). The code is inspired from that of x86/arm64. Signed-off-by: Haibo Xu <[email protected]> Reviewed-by: Andrew Jones <[email protected]> Signed-off-by: Anup Patel <[email protected]>
2024-02-28KVM: selftests: Allow tagging protected memory in guest page tablesPeter Gonda1-0/+7
Add support for tagging and untagging guest physical address, e.g. to allow x86's SEV and TDX guests to embed shared vs. private information in the GPA. SEV (encryption, a.k.a. C-bit) and TDX (shared, a.k.a. S-bit) steal bits from the guest's physical address space that is consumed by the CPU metadata, i.e. effectively aliases the "real" GPA. Implement generic "tagging" so that the shared vs. private metadata can be managed by x86 without bleeding too many details into common code. Cc: Paolo Bonzini <[email protected]> Cc: Sean Christopherson <[email protected]> Cc: Vishal Annapurve <[email protected]> Cc: Ackerly Tng <[email protected]> cc: Andrew Jones <[email protected]> Cc: Tom Lendacky <[email protected]> Cc: Michael Roth <[email protected]> Tested-by: Carlos Bilbao <[email protected]> Originally-by: Michael Roth <[email protected]> Signed-off-by: Peter Gonda <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2024-02-26KVM: riscv: selftests: Switch to use macro from csr.hHaibo Xu1-8/+2
Signed-off-by: Haibo Xu <[email protected]> Reviewed-by: Andrew Jones <[email protected]> Signed-off-by: Anup Patel <[email protected]>
2023-12-30RISC-V: KVM: selftests: Add steal_time test supportAndrew Jones1-0/+1
With the introduction of steal-time accounting support for RISC-V KVM we can add RISC-V support to the steal_time test. Reviewed-by: Anup Patel <[email protected]> Reviewed-by: Atish Patra <[email protected]> Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Anup Patel <[email protected]>
2023-12-30RISC-V: KVM: selftests: Add guest_sbi_probe_extensionAndrew Jones1-0/+21
Add guest_sbi_probe_extension(), allowing guest code to probe for SBI extensions. As guest_sbi_probe_extension() needs SBI_ERR_NOT_SUPPORTED, take the opportunity to bring in all SBI error codes. We don't bring in all current extension IDs or base extension function IDs though, even though we need one of each, because we'd prefer to bring those in as necessary. Reviewed-by: Anup Patel <[email protected]> Reviewed-by: Atish Patra <[email protected]> Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Anup Patel <[email protected]>
2023-12-29KVM: riscv: selftests: Add RISCV_SBI_EXT_REGAndrew Jones1-17/+23
While adding RISCV_SBI_EXT_REG(), acknowledge that some registers have subtypes and extend __kvm_reg_id() to take a subtype field. Then, update all macros to set the new field appropriately. The general CSR macro gets renamed to include "GENERAL", but the other macros, like the new RISCV_SBI_EXT_REG, just use the SINGLE subtype. Signed-off-by: Andrew Jones <[email protected]> Reviewed-by: Anup Patel <[email protected]> Signed-off-by: Anup Patel <[email protected]>
2023-08-31Merge tag 'kvm-riscv-6.6-1' of https://github.com/kvm-riscv/linux into HEADPaolo Bonzini1-0/+3
KVM/riscv changes for 6.6 - Zba, Zbs, Zicntr, Zicsr, Zifencei, and Zihpm support for Guest/VM - Added ONE_REG interface for SATP mode - Added ONE_REG interface to enable/disable multiple ISA extensions - Improved error codes returned by ONE_REG interfaces - Added KVM_GET_REG_LIST ioctl() implementation for KVM RISC-V - Added get-reg-list selftest for KVM RISC-V
2023-08-09KVM: riscv: selftests: Add get-reg-list testHaibo Xu1-0/+3
get-reg-list test is used to check for KVM registers regressions during VM migration which happens when destination host kernel missing registers that the source host kernel has. The blessed list registers was created by running on v6.5-rc3 Signed-off-by: Haibo Xu <[email protected]> Reviewed-by: Andrew Jones <[email protected]> Signed-off-by: Anup Patel <[email protected]>
2023-08-02KVM: selftests: Add #define of expected KVM exit reason for ucallSean Christopherson1-0/+2
Define the expected architecture specific exit reason for a successful ucall so that common tests can assert that a ucall occurred without the test needing to implement arch specific code. Suggested-by: Andrew Jones <[email protected]> Reviewed-by: Andrew Jones <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2023-08-02KVM: selftests: Add arch ucall.h and inline simple arch hooksSean Christopherson1-0/+18
Add an architecture specific ucall.h and inline the simple arch hooks, e.g. the init hook for everything except ARM, and the actual "do ucall" hook for everything except x86 (which should be simple, but temporarily isn't due to carrying a workaround). Having a per-arch ucall header will allow adding a #define for the expected KVM exit reason for a ucall that is colocated (for everything except x86) with the ucall itself. Reviewed-by: Andrew Jones <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2022-06-11KVM: selftests: Consolidate KVM_{G,S}ET_ONE_REG helpersSean Christopherson1-20/+0
Rework vcpu_{g,s}et_reg() to provide the APIs that tests actually want to use, and drop the three "one-off" implementations that cropped up due to the poor API. Ignore the handful of direct KVM_{G,S}ET_ONE_REG calls that don't fit the APIs for one reason or another. No functional change intended. Signed-off-by: Sean Christopherson <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2022-05-20KVM: selftests: riscv: Improve unexpected guest trap handlingAnup Patel1-3/+5
Currently, we simply hang using "while (1) ;" upon any unexpected guest traps because the default guest trap handler is guest_hang(). The above approach is not useful to anyone because KVM selftests users will only see a hung application upon any unexpected guest trap. This patch improves unexpected guest trap handling for KVM RISC-V selftests by doing the following: 1) Return to host user-space 2) Dump VCPU registers 3) Die using TEST_ASSERT(0, ...) Signed-off-by: Anup Patel <[email protected]> Tested-by: Mayuresh Chitale <[email protected]> Signed-off-by: Anup Patel <[email protected]>
2022-04-09KVM: selftests: riscv: Set PTE A and D bits in VS-stage page tableAnup Patel1-1/+3
Supporting hardware updates of PTE A and D bits is optional for any RISC-V implementation so current software strategy is to always set these bits in both G-stage (hypervisor) and VS-stage (guest kernel). If PTE A and D bits are not set by software (hypervisor or guest) then RISC-V implementations not supporting hardware updates of these bits will cause traps even for perfectly valid PTEs. Based on above explanation, the VS-stage page table created by various KVM selftest applications is not correct because PTE A and D bits are not set. This patch fixes VS-stage page table programming of PTE A and D bits for KVM selftests. Fixes: 3e06cdf10520 ("KVM: selftests: Add initial support for RISC-V 64-bit") Signed-off-by: Anup Patel <[email protected]> Tested-by: Mayuresh Chitale <[email protected]> Signed-off-by: Anup Patel <[email protected]>
2022-01-06KVM: selftests: Add initial support for RISC-V 64-bitAnup Patel1-0/+135
We add initial support for RISC-V 64-bit in KVM selftests using which we can cross-compile and run arch independent tests such as: demand_paging_test dirty_log_test kvm_create_max_vcpus, kvm_page_table_test set_memory_region_test kvm_binary_stats_test All VM guest modes defined in kvm_util.h require at least 48-bit guest virtual address so to use KVM RISC-V selftests hardware need to support at least Sv48 MMU for guest (i.e. VS-mode). Signed-off-by: Anup Patel <[email protected]> Reviewed-and-tested-by: Atish Patra <[email protected]>
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