We currently have duplicated functionality for the mmu_memory_cache used to pre-allocate memory for the page table manipulation code which cannot allocate memory while holding spinlocks. This functionality is duplicated across x86, arm/arm64, and mips. There were recently a debate of modifying the arm code to be more in line with the x86 code and some discussions around changing the page flags used for allocation. This series should make it easier to take a uniform approach across architectures. While there's not a huge amount of code sharing, we come out with a net gain. Only tested on arm/arm64, and only compile-tested on x86 and mips. Changes since v2: - Simplified kalloc flag definitions as per Paolo's review comment. Changes since v1: - Split out rename from initial x86 patch to have separate patches to move the logic to common code and to rename. - Introduce KVM_ARCH_WANT_MMU_MEMCACHE to avoid compile breakage on architectures that don't use this functionality. - Rename KVM_NR_MEM_OBJS to KVM_MMU_NR_MEMCACHE_OBJS Christoffer Dall (4): KVM: x86: Move mmu_memory_cache functions to common code KVM: x86: Rename mmu_memory_cache to kvm_mmu_memcache KVM: arm/arm64: Move to common kvm_mmu_memcache infrastructure KVM: mips: Move to common kvm_mmu_memcache infrastructure arch/arm/include/asm/kvm_host.h | 13 +--- arch/arm/include/asm/kvm_mmu.h | 2 +- arch/arm/include/asm/kvm_types.h | 11 ++++ arch/arm64/include/asm/kvm_host.h | 13 +--- arch/arm64/include/asm/kvm_mmu.h | 2 +- arch/arm64/include/asm/kvm_types.h | 12 ++++ arch/mips/include/asm/kvm_host.h | 15 +---- arch/mips/include/asm/kvm_types.h | 11 ++++ arch/mips/kvm/mips.c | 2 +- arch/mips/kvm/mmu.c | 54 +++------------- arch/powerpc/include/asm/kvm_types.h | 5 ++ arch/s390/include/asm/kvm_types.h | 5 ++ arch/x86/include/asm/kvm_host.h | 17 +---- arch/x86/include/asm/kvm_types.h | 11 ++++ arch/x86/kvm/mmu.c | 97 ++++++---------------------- arch/x86/kvm/paging_tmpl.h | 4 +- include/linux/kvm_host.h | 11 ++++ include/linux/kvm_types.h | 13 ++++ virt/kvm/arm/arm.c | 2 +- virt/kvm/arm/mmu.c | 68 +++++-------------- virt/kvm/kvm_main.c | 60 +++++++++++++++++ 21 files changed, 198 insertions(+), 230 deletions(-) create mode 100644 arch/arm/include/asm/kvm_types.h create mode 100644 arch/arm64/include/asm/kvm_types.h create mode 100644 arch/mips/include/asm/kvm_types.h create mode 100644 arch/powerpc/include/asm/kvm_types.h create mode 100644 arch/s390/include/asm/kvm_types.h create mode 100644 arch/x86/include/asm/kvm_types.h -- 2.18.0
