Current lazy vfp/simd implementation switches hardware context only on guest access and again on exit to host, otherwise hardware context is skipped. This patch set builds on that functionality and executes a hardware context switch only when vCPU is scheduled out or returns to user space. Patches were tested on FVP sw platform. FP crunching applications summing up values, with outcome compared to known result were executed on several guests, and host. Changes since v1->v2: * Fixed vfp/simd trap configuration to enable trace trapping * Removed set_hcptr branch label * Fixed handling of FPEXC to restore guest and host versions on vcpu_put Mario Smarduch (2): add hooks for armv7 fp/simd lazy switch support enable armv7 fp/simd lazy switch arch/arm/include/asm/kvm_asm.h | 1 + arch/arm/include/asm/kvm_host.h | 6 +++++ arch/arm/kernel/asm-offsets.c | 2 ++ arch/arm/kvm/arm.c | 17 ++++++++++++ arch/arm/kvm/interrupts.S | 60 ++++++++++++++++++++++++++++++----------- arch/arm/kvm/interrupts_head.S | 12 ++++++--- 6 files changed, 79 insertions(+), 19 deletions(-) -- 1.9.1 _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
