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9d66195807
POWER9 requires the host to set up a partition table, which is a table in memory indexed by logical partition ID (LPID) which contains the pointers to page tables and process tables for the host and each guest. This factors out the initialization of the partition table into a single function. This code was previously duplicated between hash_utils_64.c and pgtable-radix.c. This provides a function for setting a partition table entry, which is used in early MMU initialization, and will be used by KVM whenever a guest is created. This function includes a tlbie instruction which will flush all TLB entries for the LPID and all caches of the partition table entry for the LPID, across the system. This also moves a call to memblock_set_current_limit(), which was in radix_init_partition_table(), but has nothing to do with the partition table. By analogy with the similar code for hash, the call gets moved to near the end of radix__early_init_mmu(). It now gets called when running as a guest, whereas previously it would only be called if the kernel is running as the host. Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> |
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