powerpc/xics: Add icp_native_cause_ipi_rm
Function to cause an IPI by directly updating the MFFR register in the XICS. The function is meant for real-mode callers since they cannot use the smp_ops->cause_ipi function which uses an ioremapped address. Normal usage is for the the KVM real mode code to set the IPI message using smp_muxed_ipi_message_pass and then invoke icp_native_cause_ipi_rm to cause the actual IPI. The function requires kvm_hstate.xics_phys to have been initialized with the physical address of XICS. Signed-off-by:Suresh Warrier <warrier@linux.vnet.ibm.com> Acked-by:
Michael Ellerman <mpe@ellerman.id.au> Signed-off-by:
Paul Mackerras <paulus@samba.org>
parent
31639c77
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