Cam Macdonell wrote:
I don't think so. With the mmap call, I specify MAP_FIXED which requires that the memory in the shared memory object be mapped to the address given in the first parameter (s->ivshmem_ptr). If MAP_FIXED is not specified then mmap would allocate the memory and map on to it, but with MAP_FIXED it maps onto the already reserved space that ivshmem_ptr points to and was allocated with qemu_ram_alloc().
It might be nice to have a variant of qemu_ram_alloc() that takes a pointer to existing memory, so we don't have to play these MAP_FIXED games.
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