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authoraliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162>2009-01-22 16:59:11 +0000
committeraliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162>2009-01-22 16:59:11 +0000
commit6d16c2f88f2a866bec27c4d170ddd97ee8e41a0e (patch)
tree77f31b52168f1a8c7042be16b2a2b9821e525e97 /net.h
parentd268de04f29f8f6ad4523958e55fc5b55395eabc (diff)
Add target memory mapping API (Avi Kivity)
Devices accessing large amounts of memory (as with DMA) will wish to obtain a pointer to guest memory rather than access it indirectly via cpu_physical_memory_rw(). Add a new API to convert target addresses to host pointers. In case the target address does not correspond to RAM, a bounce buffer is allocated. To prevent the guest from causing the host to allocate unbounded amounts of bounce buffer, this memory is limited (currently to one page). Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6394 c046a42c-6fe2-441c-8c8c-71466251a162
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