On Tue, Dec 22, 2015 at 12:03:33PM +0100, Paolo Bonzini wrote: > memcpy can take a large amount of time for small reads and writes. > For virtio it is a common case that the first iovec can satisfy the > whole read or write. In that case, and if bytes is a constant to > avoid excessive growth of code, inline the first iteration > into the caller. > > Signed-off-by: Paolo Bonzini <pbonz...@redhat.com> > --- > v1->v2: check for overflow in offset + bytes, which > is covered by test-iov > > include/qemu/iov.h | 34 ++++++++++++++++++++++++++++++---- > util/iov.c | 8 ++++---- > 2 files changed, 34 insertions(+), 8 deletions(-)
Thanks, applied to my block tree: https://github.com/stefanha/qemu/commits/block Stefan
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