The master-abort patch introduced a background memory region
covering all 64 bit pci address space, the visible parts
being the unused pci-holes addresses.
The patch revealed the following issues:
1. Some memory regions have INT64_MAX size, but the size
was supposed to be UINT64_MAX (meaning that the
region covers all 64 bit address space). Having
a region that is not even a multiple of PAGE_SIZE
is really not what we want.
2. exec.c does not support all the 64 bit address range
and when using an unsupported address, it leads to
page tables corruption.
3. Some memory regions overlap and the visible region
is selected by chance (the algorithm implementation)
and not by the memory API:
- selecting a proper priority
- arrange the regions that are not supposed to overlap.
This series reverts this patch and another related patch
because the impact for 1.7 is too big.
After the issues above are solved, the patch can finally
be applied.
Marcel Apfelbaum (1):
Revert "hw/pci: partially handle pci master abort"
Michael S. Tsirkin (1):
Revert "exec: limit system memory size"
exec.c | 7 +------
hw/pci/pci.c | 26 --------------------------
include/hw/pci/pci_bus.h | 1 -
3 files changed, 1 insertion(+), 33 deletions(-)
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1.8.3.1
