linux

iv/linux

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Haren Myneni 2147783d6b powerpc/pseries: Use lparcfg to reconfig VAS windows for DLPAR CPU

The hypervisor assigns VAS (Virtual Accelerator Switchboard)
windows depends on cores configured in LPAR. The kernel uses
OF reconfig notifier to reconfig VAS windows for DLPAR CPU event.
In the case of shared CPU mode partition, the hypervisor assigns
VAS windows depends on CPU entitled capacity, not based on vcpus.
When the user changes CPU entitled capacity for the partition,
drmgr uses /proc/ppc64/lparcfg interface to notify the kernel.

This patch adds the following changes to update VAS resources
for shared mode:
- Call vas reconfig windows from lparcfg_write()
- Ignore reconfig changes in the VAS notifier

Signed-off-by: Haren Myneni <haren@linux.ibm.com>
[mpe: Rework error handling, report any errors as EIO]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/efa9c16e4a78dda4567a16f13dabfd73cb4674a2.camel@linux.ibm.com

2022-10-18 22:46:18 +11:00

boot

Kbuild updates for v6.1

2022-10-10 12:00:45 -07:00

configs

- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in

2022-10-10 17:53:04 -07:00

crypto

treewide: use get_random_bytes() when possible

2022-10-11 17:42:58 -06:00

include

powerpc fixes for 6.1 #2