linux.git/arch/sparc, branch v4.4.57

sparc64: fix compile warning section mismatch in find_node()

2016-12-10T18:07:25+00:00

[ Upstream commit 87a349f9cc0908bc0cfac0c9ece3179f650ae95a ]

A compile warning is introduced by a commit to fix the find_node().
This patch fix the compile warning by moving find_node() into __init
section. Because find_node() is only used by memblock_nid_range() which
is only used by a __init add_node_ranges(). find_node() and
memblock_nid_range() should also be inside __init section.

Signed-off-by: Thomas Tai 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc64: Fix find_node warning if numa node cannot be found

2016-12-10T18:07:25+00:00

[ Upstream commit 74a5ed5c4f692df2ff0a2313ea71e81243525519 ]

When booting up LDOM, find_node() warns that a physical address
doesn't match a NUMA node.

WARNING: CPU: 0 PID: 0 at arch/sparc/mm/init_64.c:835
find_node+0xf4/0x120 find_node: A physical address doesn't
match a NUMA node rule. Some physical memory will be
owned by node 0.Modules linked in:

CPU: 0 PID: 0 Comm: swapper Not tainted 4.9.0-rc3 #4
Call Trace:
 [0000000000468ba0] __warn+0xc0/0xe0
 [0000000000468c74] warn_slowpath_fmt+0x34/0x60
 [00000000004592f4] find_node+0xf4/0x120
 [0000000000dd0774] add_node_ranges+0x38/0xe4
 [0000000000dd0b1c] numa_parse_mdesc+0x268/0x2e4
 [0000000000dd0e9c] bootmem_init+0xb8/0x160
 [0000000000dd174c] paging_init+0x808/0x8fc
 [0000000000dcb0d0] setup_arch+0x2c8/0x2f0
 [0000000000dc68a0] start_kernel+0x48/0x424
 [0000000000dcb374] start_early_boot+0x27c/0x28c
 [0000000000a32c08] tlb_fixup_done+0x4c/0x64
 [0000000000027f08] 0x27f08

It is because linux use an internal structure node_masks[] to
keep the best memory latency node only. However, LDOM mdesc can
contain single latency-group with multiple memory latency nodes.

If the address doesn't match the best latency node within
node_masks[], it should check for an alternative via mdesc.
The warning message should only be printed if the address
doesn't match any node_masks[] nor within mdesc. To minimize
the impact of searching mdesc every time, the last matched
mask and index is stored in a variable.

Signed-off-by: Thomas Tai 
Reviewed-by: Chris Hyser 
Reviewed-by: Liam Merwick 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc32: Fix inverted invalid_frame_pointer checks on sigreturns

2016-12-10T18:07:25+00:00

[ Upstream commit 07b5ab3f71d318e52c18cc3b73c1d44c908aacfa ]

Signed-off-by: Andreas Larsson 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc64: Delete now unused user copy fixup functions.

2016-11-21T09:06:42+00:00

[ Upstream commit 0fd0ff01d4c3c01e7fe69b762ee1a13236639acc ]

Now that all of the user copy routines are converted to return
accurate residual lengths when an exception occurs, we no longer need
the broken fixup routines.

Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc64: Delete now unused user copy assembler helpers.

2016-11-21T09:06:42+00:00

[ Upstream commit 614da3d9685b67917cab48c8452fd8bf93de0867 ]

All of __ret{,l}_mone{_asi,_fp,_asi_fpu} are now unused.

Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc64: Convert U3copy_{from,to}_user to accurate exception reporting.

2016-11-21T09:06:42+00:00

[ Upstream commit ee841d0aff649164080e445e84885015958d8ff4 ]

Report the exact number of bytes which have not been successfully
copied when an exception occurs, using the running remaining length.

Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc64: Convert NG2copy_{from,to}_user to accurate exception reporting.

2016-11-21T09:06:42+00:00

[ Upstream commit e93704e4464fdc191f73fce35129c18de2ebf95d ]

Report the exact number of bytes which have not been successfully
copied when an exception occurs, using the running remaining length.

Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc64: Convert NGcopy_{from,to}_user to accurate exception reporting.

2016-11-21T09:06:41+00:00

[ Upstream commit 7ae3aaf53f1695877ccd5ebbc49ea65991e41f1e ]

Report the exact number of bytes which have not been successfully
copied when an exception occurs, using the running remaining length.

Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc64: Convert NG4copy_{from,to}_user to accurate exception reporting.

2016-11-21T09:06:41+00:00

[ Upstream commit 95707704800988093a9b9a27e0f2f67f5b4bf2fa ]

Report the exact number of bytes which have not been successfully
copied when an exception occurs, using the running remaining length.

Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc64: Convert U1copy_{from,to}_user to accurate exception reporting.

2016-11-21T09:06:41+00:00

[ Upstream commit cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada ]

Report the exact number of bytes which have not been successfully
copied when an exception occurs, using the running remaining length.

Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman