linux_dsm_epyc7002/drivers/xen/xen-pciback
Jan Beulich d2bd05d88d xen-pciback: return proper values during BAR sizing
Reads following writes with all address bits set to 1 should return all
changeable address bits as one, not the BAR size (nor, as was the case
for the upper half of 64-bit BARs, the high half of the region's end
address). Presumably this didn't cause any problems so far because
consumers use the value to calculate the size (usually via val & -val),
and do nothing else with it.

But also consider the exception here: Unimplemented BARs should always
return all zeroes.

And finally, the check for whether to return the sizing address on read
for the ROM BAR should ignore all non-address bits, not just the ROM
Enable one.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2016-06-24 10:53:03 +01:00
..
conf_space_capability.c xen/pciback: Drop two backends, squash and cleanup some code. 2011-07-19 20:58:35 -04:00
conf_space_header.c xen-pciback: return proper values during BAR sizing 2016-06-24 10:53:03 +01:00
conf_space_quirks.c xen/pciback: miscellaneous adjustments 2011-09-21 18:17:59 -04:00
conf_space_quirks.h xen/pciback: Drop two backends, squash and cleanup some code. 2011-07-19 20:58:35 -04:00
conf_space.c xen/pciback: Fix conf_space read/write overlap check. 2016-06-23 11:36:15 +01:00
conf_space.h xen-pciback: Add name prefix to global 'permissive' variable 2015-04-29 17:34:50 +01:00
Makefile xen/pciback: Have 'passthrough' option instead of XEN_PCIDEV_BACKEND_PASS and XEN_PCIDEV_BACKEND_VPCI 2011-07-19 21:04:20 -04:00
passthrough.c xen/pciback: Don't deadlock when unbinding. 2014-12-04 12:41:58 +00:00
pci_stub.c xen/pciback: Don't print scary messages when unsupported by hypervisor. 2015-03-16 14:49:14 +00:00
pciback_ops.c xen: features and fixes for 4.6-rc0 2016-03-22 12:55:17 -07:00
pciback.h xen/pciback: Save xen_pci_op commands before processing it 2015-12-18 10:00:47 -05:00
vpci.c xen/pciback: Don't deadlock when unbinding. 2014-12-04 12:41:58 +00:00
xenbus.c xen: audit usages of module.h ; remove unnecessary instances 2016-03-21 15:13:32 +00:00