Re: [Qemu-devel] [PATCH 1/5] Add target memory mapping API

[Ian Jackson]

Avi Kivity writes ("[Qemu-devel] [PATCH 1/5] Add target memory mapping API"):
> 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 <address@hidden>
...
> +void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len,
> +                               int is_write, target_phys_addr_t access_len)

Great, thanks for adding the access_len.

Ian.