Files
linux/arch/powerpc/platforms
Nathan Lynch cc24b32d7d powerpc/pseries/lpar: add missing RTAS retry status handling
[ Upstream commit daa8ab5904 ]

The ibm,get-system-parameter RTAS function may return -2 or 990x,
which indicate that the caller should try again.

pseries_lpar_read_hblkrm_characteristics() ignores this, making it
possible to incorrectly detect TLB block invalidation characteristics
at boot.

Move the RTAS call into a coventional rtas_busy_delay()-based loop.

Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Fixes: 1211ee61b4 ("powerpc/pseries: Read TLB Block Invalidate Characteristics")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20230125-b4-powerpc-rtas-queue-v3-3-26929c8cce78@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-03-01 13:21:51 +01:00
..
2020-05-28 23:24:36 +10:00
2024-01-25 14:52:32 -08:00
2021-06-21 21:15:26 +10:00