The guest memory layout created by kvmtool is fixed: regular MMIO is below 1G, PCI MMIO is below 2G, and the RAM always starts at the 2G mark. Real hardware can have a different memory layout, and being able to create a specific memory layout can be very useful for testing the guest kernel. This series allows the user the specify the memory layout for the virtual machine by expanding the -m/--mem option to take an <addr> parameter, and by adding architecture specific options to define the I/O ports, regular MMIO and PCI MMIO memory regions. The user defined memory regions are implemented in patch #16; I consider the patch to be an RFC because I'm not really sure that my approach is the correct one; for example, I decided to make the options arch dependent because that seemed like the path of least resistance, but they could have just as easily implemented as arch independent and each architecture advertised having support for them via a define (like with RAM base address). Summary: * Patches 1-8 are fixes and cleanups. * Patch 9 implements the option for the user to specify the RAM base address, but the MMIO regions are left unchanged. * Patches 10-12 represent another round of cleanups. * Patch 13 implements a memory allocator that allows the user the specify any RAM address. The MMIO regions are allocated from the remaining address space. * Patches 14-15 are cleanups in preparation for the patch will allow the user to define the memory layout. * Patch 16 implements the option for the user to define the memory layout. The series are based on previous work by Julien Grall [1]. [1] https://www.spinics.net/lists/kvm/msg179408.html Alexandru Elisei (10): kvmtool: Add helper to sanitize arch specific KVM configuration kvmtool: Use MB consistently builtin-run.c: Always use virtual machine ram_size in bytes arm: Remove redundant define ARM_PCI_CFG_SIZE arm: Allow the user to specify RAM base address arm/pci: Remove unused ioports arm: Allow any base address for RAM arm: Move memory related code to memory.c kvmtool: Make the size@addr option parser globally visible arm: Allow the user to define the MMIO regions Julien Grall (4): kvm__arch_init: Don't pass hugetlbfs_path and ram_size in parameter virtio/scsi: Allow to use multiple banks arm: Move anything related to RAM initialization in kvm__init_ram Fold kvm__init_ram call in kvm__arch_init and rename it Suzuki K Poulose (2): arm: Allow use of hugepage with 16K pagesize host kvmtool: Allow standard size specifiers for memory Documentation/kvmtool.1 | 4 +- Makefile | 2 +- arm/aarch32/include/kvm/kvm-arch.h | 2 +- arm/aarch64/include/kvm/kvm-arch.h | 6 +- arm/allocator.c | 150 ++++++++++++++ arm/gic.c | 30 +-- arm/include/arm-common/allocator.h | 25 +++ arm/include/arm-common/kvm-arch.h | 59 +++--- arm/include/arm-common/kvm-config-arch.h | 25 +++ arm/include/arm-common/memory.h | 13 ++ arm/kvm.c | 58 ++---- arm/memory.c | 326 +++++++++++++++++++++++++++++++ arm/pci.c | 7 +- builtin-run.c | 119 +++++++++-- include/kvm/kvm-config.h | 5 +- include/kvm/kvm.h | 7 +- kvm.c | 15 +- mips/include/kvm/kvm-arch.h | 4 + mips/kvm.c | 14 +- pci.c | 36 +++- powerpc/include/kvm/kvm-arch.h | 4 + powerpc/kvm.c | 14 +- util/util.c | 2 +- virtio/mmio.c | 7 + virtio/scsi.c | 21 +- x86/include/kvm/kvm-arch.h | 4 + x86/kvm.c | 35 ++-- 27 files changed, 843 insertions(+), 151 deletions(-) create mode 100644 arm/allocator.c create mode 100644 arm/include/arm-common/allocator.h create mode 100644 arm/include/arm-common/memory.h create mode 100644 arm/memory.c -- 2.7.4
