| 68c77d8a1e1ad6cfe228390702f3e4eb2bf8e17a |
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25-Aug-2014 |
Ralf Baechle <ralf@linux-mips.org> |
MIPS: COP2: CPP macro safety fixes.
- Don't pass things to macros that couldn't be dereferences if that
macro was actually a function.
- Don't use empty function-like macros.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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| 1db1af84d6df99a8e5d6ddea8c7b5c1327c9a620 |
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27-Jan-2014 |
Paul Burton <paul.burton@imgtec.com> |
MIPS: Basic MSA context switching support
This patch adds support for context switching the MSA vector registers.
These 128 bit vector registers are aliased with the FP registers - an
FP register accesses the least significant bits of the vector register
with which it is aliased (ie. the register with the same index). Due to
both this & the requirement that the scalar FPU must be 64-bit (FR=1) if
enabled at the same time as MSA the kernel will enable MSA & scalar FP
at the same time for tasks which use MSA. If we restore the MSA vector
context then we might as well enable the scalar FPU since the reason it
was left disabled was to allow for lazy FP context restoring - but we
just restored the FP context as it's a subset of the vector context. If
we restore the FP context and have previously used MSA then we have to
restore the whole vector context anyway (see comment in
enable_restore_fp_context for details) so similarly we might as well
enable MSA.
Thus if a task does not use MSA then it will continue to behave as
without this patch - the scalar FP context will be saved & restored as
usual. But if a task executes an MSA instruction then it will save &
restore the vector context forever more.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6431/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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| 8c0f8ab0e942da00a910d342c65a44656ef843cf |
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19-Nov-2013 |
Paul Burton <paul.burton@imgtec.com> |
MIPS: clean up resume declaration
This patch cleans up the declaration of the resume function by replacing
void pointers with their correct types. The irrelevant & incorrect
comment preceeding the resume function is replaced by one documenting
its function.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Reviewed-by: Qais Yousef <qais.yousef@imgtec.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6146/
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| 2c952e06e4f57716109b609956eda28c900faac0 |
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10-Jun-2013 |
Jayachandran C <jchandra@broadcom.com> |
MIPS: Move cop2 save/restore to switch_to()
Move the common code for saving and restoring platform specific COP2
registers to switch_to(). This will make supporting new platforms (like
Netlogic XLP) easier.
The platform specific COP2 definitions are to be specified in
asm/processor.h and in asm/cop2.h.
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Cc: ddaney.cavm@gmail.com
Patchwork: https://patchwork.linux-mips.org/patch/5411/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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| 7034228792cc561e79ff8600f02884bd4c80e287 |
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22-Jan-2013 |
Ralf Baechle <ralf@linux-mips.org> |
MIPS: Whitespace cleanup.
Having received another series of whitespace patches I decided to do this
once and for all rather than dealing with this kind of patches trickling
in forever.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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| 2dd17030c940ef1199a07b095ec79c4660fa8734 |
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19-Jul-2012 |
Leonid Yegoshin <yegoshin@mips.com> |
MIPS: Fix race condition with FPU thread task flag during context switch.
[ralf@linux-mips.org: Cosmetic changes; also fixed up r2300_switch.S and
octeon_switch.S which needed similar modifications.]
Signed-off-by: Leonid Yegoshin <yegoshin@mips.com>
Signed-off-by: Steven J. Hill <sjhill@mips.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3784/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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| b81947c646bfefdf98e2fde5d7d39cbbda8525d4 |
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28-Mar-2012 |
David Howells <dhowells@redhat.com> |
Disintegrate asm/system.h for MIPS
Disintegrate asm/system.h for MIPS.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
cc: linux-mips@linux-mips.org
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