blackbird-op-linux - Blackbird™ Linux sources for OpenPOWER

	Commit message (Collapse)	Author	Age	Files	Lines
*	powerpc/powernv: Add ultravisor message log interface	Claudio Carvalho	2019-08-30	1	-0/+45
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	The ultravisor (UV) provides an in-memory console which follows the OPAL in-memory console structure. This patch extends the OPAL msglog code to initialize the UV memory console and provide the "/sys/firmware/ultravisor/msglog" interface for userspace to view the UV message log. Signed-off-by: Claudio Carvalho <cclaudio@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Tested-by: Claudio Carvalho <cclaudio@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190828130521.26764-2-mpe@ellerman.id.au
*	powerpc/powernv: Introduce FW_FEATURE_ULTRAVISOR	Claudio Carvalho	2019-08-30	1	-0/+24
	In PEF enabled systems, some of the resources which were previously hypervisor privileged are now ultravisor privileged and controlled by the ultravisor firmware. This adds FW_FEATURE_ULTRAVISOR to indicate if PEF is enabled. The host kernel can use FW_FEATURE_ULTRAVISOR, for instance, to skip accessing resources (e.g. PTCR and LDBAR) in case PEF is enabled. Signed-off-by: Claudio Carvalho <cclaudio@linux.ibm.com> [ andmike: Device node name to "ibm,ultravisor" ] Signed-off-by: Michael Anderson <andmike@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190822034838.27876-4-cclaudio@linux.ibm.com