Revision 32ffa4f71e10009498ae6b54da65ab316db967bd authored by Axel Rasmussen on 19 May 2021, 20:03:33 UTC, committed by Paolo Bonzini on 27 May 2021, 11:45:55 UTC
This is a preparatory commit needed before we can use different kinds of backing pages for guest memory. Previously, we used perf_test_args.host_page_size, which is the host's native page size (commonly 4K). For VM_MEM_SRC_ANONYMOUS this turns out to be okay, but in a follow-up commit we want to allow using different kinds of backing memory. Take VM_MEM_SRC_ANONYMOUS_HUGETLB for example. Without this change, if we used that backing page type, when we issued a UFFDIO_COPY ioctl we'd only do so with 4K, rather than the full 2M of a backing hugepage. In this case, UFFDIO_COPY returns -EINVAL (__mcopy_atomic_hugetlb checks the size). Signed-off-by: Axel Rasmussen <axelrasmussen@google.com> Message-Id: <20210519200339.829146-5-axelrasmussen@google.com> Reviewed-by: Ben Gardon <bgardon@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
1 parent 25408e5
| File | Mode | Size |
|---|---|---|
| Kconfig | -rw-r--r-- | 4.2 KB |
| Makefile | -rw-r--r-- | 577 bytes |
| virtio.c | -rw-r--r-- | 11.5 KB |
| virtio_balloon.c | -rw-r--r-- | 32.8 KB |
| virtio_dma_buf.c | -rw-r--r-- | 2.2 KB |
| virtio_input.c | -rw-r--r-- | 11.1 KB |
| virtio_mem.c | -rw-r--r-- | 73.4 KB |
| virtio_mmio.c | -rw-r--r-- | 19.9 KB |
| virtio_pci_common.c | -rw-r--r-- | 15.9 KB |
| virtio_pci_common.h | -rw-r--r-- | 4.2 KB |
| virtio_pci_legacy.c | -rw-r--r-- | 7.8 KB |
| virtio_pci_modern.c | -rw-r--r-- | 11.5 KB |
| virtio_pci_modern_dev.c | -rw-r--r-- | 18.6 KB |
| virtio_ring.c | -rw-r--r-- | 60.4 KB |
| virtio_vdpa.c | -rw-r--r-- | 9.2 KB |
Computing file changes ...
