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ee6a569d3b
This patch enables the ultravisor adapter interruption vitualization support indicated by UV feature BIT_UV_FEAT_AIV. This allows ISC interruption injection directly into the GISA IPM for PV kvm guests. Hardware that does not support this feature will continue to use the UV interruption interception method to deliver ISC interruptions to PV kvm guests. For this purpose, the ECA_AIV bit for all guest cpus will be cleared and the GISA will be disabled during PV CPU setup. In addition a check in __inject_io() has been removed. That reduces the required instructions for interruption handling for PV and traditional kvm guests. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Link: https://lore.kernel.org/r/20220209152217.1793281-2-mimu@linux.ibm.com Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com> |
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| .. | ||
| appldata | ||
| boot | ||
| configs | ||
| crypto | ||
| hypfs | ||
| include | ||
| kernel | ||
| kvm | ||
| lib | ||
| mm | ||
| net | ||
| pci | ||
| purgatory | ||
| tools | ||
| Kbuild | ||
| Kconfig | ||
| Kconfig.debug | ||
| Makefile | ||