linux-dev/tools/testing/selftests/kvm/include/aarch64/processor.h, branch linus/master

selftests: KVM: Create helper for making SMCCC calls

2022-05-03T20:30:20Z

The PSCI and PV stolen time tests both need to make SMCCC calls within the guest. Create a helper for making SMCCC calls and rework the existing tests to use the library function. Signed-off-by: Oliver Upton Reviewed-by: Andrew Jones Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20220409184549.1681189-11-oupton@google.com

KVM: selftests: arm64: Check for supported page sizes

2021-12-28T11:04:20Z

Just as arm64 implemenations don't necessary support all IPA ranges, they don't all support the same page sizes either. Fun. Create a dummy VM to snapshot the page sizes supported by the host, and filter the supported modes. Signed-off-by: Marc Zyngier Reviewed-by: Andrew Jones Link: https://lore.kernel.org/r/20211227124809.1335409-4-maz@kernel.org

KVM: arm64: selftests: Maintain consistency for vcpuid type

2021-10-17T10:17:21Z

The prototype of aarch64_vcpu_setup() accepts vcpuid as 'int', while the rest of the aarch64 (and struct vcpu) carries it as 'uint32_t'. Hence, change the prototype to make it consistent throughout the board. Signed-off-by: Raghavendra Rao Ananta Reviewed-by: Andrew Jones Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20211007233439.1826892-10-rananta@google.com

KVM: arm64: selftests: Add support to disable and enable local IRQs

2021-10-17T10:17:20Z

Add functions local_irq_enable() and local_irq_disable() to enable and disable the IRQs from the guest, respectively. Signed-off-by: Raghavendra Rao Ananta Reviewed-by: Oliver Upton Reviewed-by: Andrew Jones Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20211007233439.1826892-9-rananta@google.com

KVM: arm64: selftests: Add support for cpu_relax

2021-10-17T10:17:20Z

Implement the guest helper routine, cpu_relax(), to yield the processor to other tasks. The function was derived from arch/arm64/include/asm/vdso/processor.h. Signed-off-by: Raghavendra Rao Ananta Reviewed-by: Oliver Upton Reviewed-by: Andrew Jones Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20211007233439.1826892-6-rananta@google.com

KVM: arm64: selftests: Introduce ARM64_SYS_KVM_REG

2021-10-17T10:17:20Z

With the inclusion of sysreg.h, that brings in system register encodings, it would be redundant to re-define register encodings again in processor.h to use it with ARM64_SYS_REG for the KVM functions such as set_reg() or get_reg(). Hence, add helper macro, ARM64_SYS_KVM_REG, that converts SYS_* definitions in sysreg.h into ARM64_SYS_REG definitions. Also replace all the users of ARM64_SYS_REG, relying on the encodings created in processor.h, with ARM64_SYS_KVM_REG and remove the definitions. Signed-off-by: Raghavendra Rao Ananta Reviewed-by: Ricardo Koller Reviewed-by: Andrew Jones Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20211007233439.1826892-5-rananta@google.com

tools: arm64: Import sysreg.h

2021-10-17T10:15:51Z

Bring-in the kernel's arch/arm64/include/asm/sysreg.h into tools/ for arm64 to make use of all the standard register definitions in consistence with the kernel. Make use of the register read/write definitions from sysreg.h, instead of the existing definitions. A syntax correction is needed for the files that use write_sysreg() to make it compliant with the new (kernel's) syntax. Reviewed-by: Andrew Jones Reviewed-by: Oliver Upton Signed-off-by: Raghavendra Rao Ananta [maz: squashed two commits in order to keep the series bisectable] Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20211007233439.1826892-3-rananta@google.com Link: https://lore.kernel.org/r/20211007233439.1826892-4-rananta@google.com

KVM: arm64: selftests: Add MMIO readl/writel support

2021-10-17T10:15:11Z

Define the readl() and writel() functions for the guests to access (4-byte) the MMIO region. The routines, and their dependents, are inspired from the kernel's arch/arm64/include/asm/io.h and arch/arm64/include/asm/barrier.h. Signed-off-by: Raghavendra Rao Ananta Reviewed-by: Oliver Upton Reviewed-by: Andrew Jones Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20211007233439.1826892-2-rananta@google.com

selftests: KVM: Introduce psci_cpu_on_test

2021-08-19T08:08:57Z

Introduce a test for aarch64 that ensures CPU resets induced by PSCI are reflected in the target vCPU's state, even if the target is never run again. This is a regression test for a race between vCPU migration and PSCI. Reviewed-by: Andrew Jones Signed-off-by: Oliver Upton Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20210818202133.1106786-5-oupton@google.com

KVM: selftests: Add aarch64/debug-exceptions test

2021-06-14T08:06:23Z

Covers fundamental tests for debug exceptions. The guest installs and handle its debug exceptions itself, without KVM_SET_GUEST_DEBUG. Signed-off-by: Ricardo Koller Reviewed-by: Andrew Jones Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20210611011020.3420067-7-ricarkol@google.com