Thread (11 messages) flat view 11 messages, 5 authors, 2017-08-14

Re: powerpc/mm: Invalidate partition table cache on host proc tbl base update

From: Michael Ellerman <hidden>
Date: 2017-08-11 12:19:57

On Thu, 2017-08-03 at 04:15:51 UTC, Suraj Jitindar Singh wrote:
The host process table base is stored in the partition table by calling
the function native_register_process_table(). Currently this just sets
the entry in memory and is missing a proceeding cache invalidation
instruction. Any update to the partition table should be followed by a
cache invalidation instruction specifying invalidation of the caching of
any partition table entries (RIC = 2, PRS = 0).

We already have a function to update the partition table with the
required cache invalidation instructions - mmu_partition_table_set_entry().
Update the native_register_process_table() function to call
mmu_partition_table_set_entry(), this ensures all appropriate
invalidation will be performed.

Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Reviewed-by: Aneesh Kumar K.V <redacted>
Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/7cd2a8695ef9c31e8f51773f0de9e6

cheers
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