This series unifies the memory allocators in kvm-unit-tests: - x86 startup code sets up phys_alloc using the e801 memory map information from multiboot. phys_alloc remains active until the tests call setup_vm. phys_alloc is very simple and is not able to free any memory. - a new MMU-friendly alloc_ops implementation is provided based on lib/x86/vm.c. The new alloc_ops relies on a physical page allocator (in lib/alloc_page.c), which is initialized from the final phys_alloc state, and a virtual address allocator. The alloc_ops get physical pages and maps them into a contiguous virtual address space range. The entry points for the architecture-dependent APIs are setup_mmu, install_page and virt_to_pte_phys. lib/x86/vm.c implements them together with other x86-specific functions. Changes from yesterday's RFC include: - code style fixes when code was moved - spinlocks in the page allocator - an extra patch "x86: introduce pgd_t and pteval_t" to avoid abusing unsigned long / u64, and in general paying more attention to types - quite a few bugfixes - the final 7 patches that port ARM tests to use the new mechanism - tested on i386 and PPC too Possible extensions include implementing the new API for PPC/s390 (probably using a soft TLB approach, similar to Linux, for PPC hashed page tables), and supporting sub-page allocation in malloc. Paolo Paolo Bonzini (18): lib: simplify alloc_ops lib: start moving vmalloc to generic code lib: move page allocator here from x86 alloc_page: fix off-by-one x86: leave VM setup out of vtd_init x86: prepare for extending setup.c x86: use alloc_phys alloc: implement free x86: introduce pgd_t and pteval_t x86: turn virt_to_phys_cr3 into virt_to_pte_phys vmalloc: convert to alloc_ops arm64: use adrp instead of adr arm: make pgtable.h private to mmu.c arm: get rid of pud arm: use better-matching types for virtual and physical addresses arm: only align CPU stacks to one page arm: do not allocate virtio buffers from the stack arm: enable vmalloc arm/Makefile.common | 4 + arm/cstart64.S | 25 ++-- arm/sieve.c | 1 + lib/alloc.c | 202 ++++++++------------------------ lib/alloc.h | 90 +-------------- lib/alloc_page.c | 131 +++++++++++++++++++++ lib/alloc_page.h | 16 +++ lib/alloc_phys.c | 132 +++++++++++++++++++++ lib/alloc_phys.h | 45 ++++++++ lib/arm/asm/mmu-api.h | 15 ++- lib/arm/asm/mmu.h | 1 - lib/arm/asm/page.h | 4 - lib/arm/asm/pgtable.h | 36 +++--- lib/arm/asm/thread_info.h | 2 +- lib/arm/bitops.c | 1 + lib/arm/mmu.c | 104 +++++++++++------ lib/arm/setup.c | 3 +- lib/arm64/asm/mmu.h | 1 - lib/arm64/asm/page.h | 12 +- lib/arm64/asm/pgtable-hwdef.h | 17 +-- lib/arm64/asm/pgtable.h | 15 +-- lib/chr-testdev.c | 17 ++- lib/libcflat.h | 2 + lib/powerpc/setup.c | 1 + lib/virtio-mmio.c | 4 +- lib/vmalloc.c | 102 ++++++++++++++++ lib/vmalloc.h | 17 +++ lib/x86/asm/page.h | 3 + lib/x86/intel-iommu.c | 4 +- lib/x86/intel-iommu.h | 1 - lib/x86/io.c | 2 +- lib/x86/isr.c | 5 +- lib/x86/setup.c | 49 +++++--- lib/x86/vm.c | 262 +++++++----------------------------------- lib/x86/vm.h | 41 +++---- powerpc/Makefile.common | 1 + s390x/Makefile | 2 +- x86/Makefile.common | 4 + x86/asyncpf.c | 7 +- x86/cstart.S | 4 +- x86/cstart64.S | 4 +- x86/emulator.c | 2 + x86/eventinj.c | 4 +- x86/hypercall.c | 1 + x86/hyperv_clock.c | 1 + x86/hyperv_connections.c | 1 + x86/hyperv_stimer.c | 1 + x86/hyperv_synic.c | 1 + x86/intel-iommu.c | 5 + x86/pmu.c | 4 +- x86/rmap_chain.c | 2 + x86/sieve.c | 6 +- x86/svm.c | 1 + x86/taskswitch.c | 1 + x86/taskswitch2.c | 2 + x86/vmx.c | 1 + x86/vmx_tests.c | 2 + 57 files changed, 777 insertions(+), 647 deletions(-) create mode 120000 arm/sieve.c create mode 100644 lib/alloc_page.c create mode 100644 lib/alloc_page.h create mode 100644 lib/alloc_phys.c create mode 100644 lib/alloc_phys.h create mode 100644 lib/vmalloc.c create mode 100644 lib/vmalloc.h -- 2.14.2
