For VFIO based device assignment, we need to know what guest memory
areas are actual RAM. RAMBlocks have long since become a grab bag
of misc allocations, so aren't effective for this. Anthony has had
a RAM API in mind for a while now that addresses this problem. This
implements just enough of it so that we have an interface to get
actual guest memory physical addresses to setup the host IOMMU. We
can continue building a full RAM API on top of this stub.
Anthony, feel free to add copyright to memory.c as it's based on
your initial implementation. I had to add something since the file
in your branch just copies a header with Frabrice's copywrite.
Thanks,
Alex
---
Alex Williamson (2):
RAM API: Make use of it for x86 PC
Minimal RAM API support
Makefile.target | 1 +
cpu-common.h | 2 +
hw/pc.c | 12 ++++----
memory.c | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
memory.h | 23 +++++++++++++++
5 files changed, 114 insertions(+), 6 deletions(-)
create mode 100644 memory.c
create mode 100644 memory.h
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