On 8/12/21 12:24 AM, Roger Pau Monné wrote:
The branch main has been updated by royger:
URL:
https://cgit.FreeBSD.org/src/commit/?id=f4c6843ec2b9aa5eff475778fb000ed6278c5b77
commit f4c6843ec2b9aa5eff475778fb000ed6278c5b77
Author: Roger Pau Monné <[email protected]>
AuthorDate: 2021-04-09 09:31:44 +0000
Commit: Roger Pau Monné <[email protected]>
CommitDate: 2021-08-12 07:18:32 +0000
xen: use correct cache attributes for Xen specific memory regions
bus_activate_resource maps memory regions as uncacheable on x86, which
is more strict than required for regions allocated using xenmem_alloc,
so don't rely on bus_activate_resource and instead map the region
using pmap_mapdev_attr and VM_MEMATTR_XEN as the cache attribute.
Sponsored by: Citrix Systems R&D
It would probably be cleaner to use bus_map_resource() for this instead. It
would mean you would have to use a structure that writes to as the argument
to bus_read/write_* instead of using the resource directly.
--
John Baldwin
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