228957fea3
Let's allow a minimum block size of 1 MiB in all configurations. Select the default block size based on - The page size of the memory backend. - The THP size if the memory backend size corresponds to the real host page size. - The global minimum of 1 MiB. and warn if something smaller is configured by the user. VIRTIO_MEM only supports Linux (depends on LINUX), so we can probe the THP size unconditionally. For now we only support virtio-mem on x86-64 - there isn't a user-visible change (x86-64 only supports 2 MiB THP on the PMD level) - the default was, and will be 2 MiB. If we ever have THP on the PUD level (e.g., 1 GiB THP on x86-64), we expect it to be more transparent - e.g., to only optimize fully populated ranges unless explicitly told /configured otherwise (in contrast to PMD THP). Reviewed-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Wei Yang <richardw.yang@linux.intel.com> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> Cc: Igor Mammedov <imammedo@redhat.com> Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20201008083029.9504-4-david@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
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.. | ||
Kconfig | ||
meson.build | ||
trace-events | ||
trace.h | ||
vhost-backend.c | ||
vhost-scsi-pci.c | ||
vhost-stub.c | ||
vhost-user-blk-pci.c | ||
vhost-user-fs-pci.c | ||
vhost-user-fs.c | ||
vhost-user-input-pci.c | ||
vhost-user-scsi-pci.c | ||
vhost-user-vsock-pci.c | ||
vhost-user-vsock.c | ||
vhost-user.c | ||
vhost-vdpa.c | ||
vhost-vsock-common.c | ||
vhost-vsock-pci.c | ||
vhost-vsock.c | ||
vhost.c | ||
virtio-9p-pci.c | ||
virtio-balloon-pci.c | ||
virtio-balloon.c | ||
virtio-blk-pci.c | ||
virtio-bus.c | ||
virtio-crypto-pci.c | ||
virtio-crypto.c | ||
virtio-input-host-pci.c | ||
virtio-input-pci.c | ||
virtio-iommu-pci.c | ||
virtio-iommu.c | ||
virtio-mem-pci.c | ||
virtio-mem-pci.h | ||
virtio-mem.c | ||
virtio-mmio.c | ||
virtio-net-pci.c | ||
virtio-pci.c | ||
virtio-pci.h | ||
virtio-pmem-pci.c | ||
virtio-pmem-pci.h | ||
virtio-pmem.c | ||
virtio-rng-pci.c | ||
virtio-rng.c | ||
virtio-scsi-pci.c | ||
virtio-serial-pci.c | ||
virtio.c |