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>
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File | Mode | Size |
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Kconfig | -rw-r--r-- | 939 bytes |
Makefile | -rw-r--r-- | 416 bytes |
mv_64xx.c | -rw-r--r-- | 18.6 KB |
mv_64xx.h | -rw-r--r-- | 4.2 KB |
mv_94xx.c | -rw-r--r-- | 28.8 KB |
mv_94xx.h | -rw-r--r-- | 10.0 KB |
mv_chips.h | -rw-r--r-- | 5.8 KB |
mv_defs.h | -rw-r--r-- | 18.6 KB |
mv_init.c | -rw-r--r-- | 19.9 KB |
mv_sas.c | -rw-r--r-- | 53.5 KB |
mv_sas.h | -rw-r--r-- | 12.8 KB |
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