From mboxrd@z Thu Jan 1 00:00:00 1970 From: julien.grall@arm.com (Julien Grall) Date: Thu, 10 May 2018 15:14:41 +0100 Subject: [RFC 00/13] arm: Allow the user specifying where the RAM is place in the memory In-Reply-To: <20180510140441.24573-1-julien.grall@arm.com> References: <20180510140441.24573-1-julien.grall@arm.com> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org I forgot to mention in the title that the series is for kvmtools. Sorry for the confusion. Cheers, On 10/05/18 15:04, Julien Grall wrote: > Hi all, > > At the moment, a user is only able to specify the amount of RAM used by the > guest. Where the RAM will live is left to the software and hardcoded. > > It could be useful for testing purpose to move the RAM in different place. > This series adds the possibility for the user to specify multiple RAM region. > > The option -m/--mem is extended to specify the address using the following > format: @. The option needs to be repeated as many times as the > number of RAM region in the guest layout. > > For instance, if you want 512MB at 3GB and 512MB 4GB it would look like: > -m 512 at 0xc0000000 -m 512 at 0x100000000 > > Note that the memory layout is not yet fully configurable by the user, so the > MMIO region is still living below 2GB. This means RAM cannot live in the > region 0-2GB. This could be changed in the future. > > This new version also integrates work from Suzuki to allow the user specifying > the IPA size for the guest. This was previously sent separately on kvmarm [1]. > > Cheers, > > [1] https://lkml.org/lkml/2018/3/27/437 > > Julien Grall (7): > kvm__arch_init: Don't pass hugetlbfs_path and ram_size in parameter > virtio/scsi: Allow to use multiple banks > Fold kvm__init_ram call in kvm__arch_init > kvm__arch_sanitize_cfg > arm: Move anything related to RAM initialization in kvm__init_ram > Allow the user to specify where the RAM is placed in the memory > arm: Add support for multi memory regions > > Suzuki K Poulose (6): > arm: Allow use of hugepage with 16K pagesize host > virtio: Handle aborts using invalid PFN > kvmtool: Allow backends to run checks on the KVM device fd > kvmtool: arm64: Add support for guest physical address size > kvmtool: arm64: Switch memory layout > kvmtool: arm/arm64: Add support for creating VM with PA size > > arm/aarch32/include/kvm/kvm-arch.h | 3 +- > arm/aarch64/include/kvm/kvm-arch.h | 15 ++- > arm/aarch64/include/kvm/kvm-config-arch.h | 5 +- > arm/fdt.c | 17 ++- > arm/include/arm-common/kvm-arch.h | 32 ++++-- > arm/include/arm-common/kvm-config-arch.h | 1 + > arm/kvm.c | 183 +++++++++++++++++++++++++----- > builtin-run.c | 87 ++++++++++++-- > include/kvm/kvm-config.h | 16 ++- > include/kvm/kvm.h | 28 ++++- > kvm.c | 10 +- > mips/kvm.c | 47 +++++--- > powerpc/kvm.c | 33 +++--- > virtio/mmio.c | 14 ++- > virtio/pci.c | 10 +- > virtio/scsi.c | 21 ++-- > x86/bios.c | 8 +- > x86/kvm.c | 54 +++++---- > 18 files changed, 443 insertions(+), 141 deletions(-) > -- Julien Grall