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2147783d6b
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 |
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