linux-toradex.git/arch/powerpc/kernel/exceptions-64s.S, branch v5.5-rc7 Linux kernel for Apalis and Colibri modules powerpc/64s/exception: Fix kaup -> kuap typo 2019-11-13T05:58:08+00:00 Andrew Donnellan ajd@linux.ibm.com 2019-10-22T06:06:03+00:00 1db550f44ab672b5ded14a94e092b9a9a2d29c8c It's KUAP, not KAUP. Fix typo in INT_COMMON macro. Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20191022060603.24101-1-ajd@linux.ibm.com 
It's KUAP, not KAUP. Fix typo in INT_COMMON macro.

Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191022060603.24101-1-ajd@linux.ibm.com
powerpc/64s/exception: reduce page fault unnecessary loads 2019-08-30T01:14:59+00:00 Nicholas Piggin npiggin@gmail.com 2019-08-02T10:57:01+00:00 9b123d1ea23701bc00ebf712f1e03b25b8195eeb This avoids 3 loads in the radix page fault case, 1 load in the hash fault case, and 2 loads in the hash miss page fault case. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190802105709.27696-37-npiggin@gmail.com 
This avoids 3 loads in the radix page fault case, 1 load in the
hash fault case, and 2 loads in the hash miss page fault case.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802105709.27696-37-npiggin@gmail.com
powerpc/64s/exception: Remove pointless KVM handler name bifurcation 2019-08-30T01:14:59+00:00 Nicholas Piggin npiggin@gmail.com 2019-08-02T10:57:00+00:00 05f97d94dd0e2883bc7b2e6b7b5e4c088e0d1437 Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190802105709.27696-36-npiggin@gmail.com 
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802105709.27696-36-npiggin@gmail.com
powerpc/64s/exception: program check handler do not branch into a macro 2019-08-30T01:14:58+00:00 Nicholas Piggin npiggin@gmail.com 2019-08-02T10:56:59+00:00 1b3599829a2560fe6c9a5a4a6bb6b2bc4e5bdaee It is clever, but the small code saving is not worth the spaghetti of jumping to a label in an expanded macro, particularly when the label is just a number rather than a descriptive name. So expand the INT_COMMON macro twice, once for the stack and no stack cases, and branch to those. The slight code size increase is worth the improved clarity of branches for this non-performance critical code. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190802105709.27696-35-npiggin@gmail.com 
It is clever, but the small code saving is not worth the spaghetti of
jumping to a label in an expanded macro, particularly when the label
is just a number rather than a descriptive name.

So expand the INT_COMMON macro twice, once for the stack and no stack
cases, and branch to those. The slight code size increase is worth
the improved clarity of branches for this non-performance critical
code.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802105709.27696-35-npiggin@gmail.com
powerpc/64s/exception: move interrupt entry code above the common handler 2019-08-30T01:14:58+00:00 Nicholas Piggin npiggin@gmail.com 2019-08-02T10:56:58+00:00 c7c5cbb42d6e207a059c64740b1654376619345e This better reflects the order in which the code is executed. No generated code change except BUG line number constants. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190802105709.27696-34-npiggin@gmail.com 
This better reflects the order in which the code is executed.

No generated code change except BUG line number constants.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802105709.27696-34-npiggin@gmail.com
powerpc/64s/exception: INT_COMMON add DAR, DSISR, reconcile options 2019-08-30T01:14:58+00:00 Nicholas Piggin npiggin@gmail.com 2019-08-02T10:56:57+00:00 d1a84718888e768296557b83f4c56cb1caef8fdd Move DAR and DSISR saving to pt_regs into INT_COMMON. Also add an option to expand RECONCILE_IRQ_STATE. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190802105709.27696-33-npiggin@gmail.com 
Move DAR and DSISR saving to pt_regs into INT_COMMON. Also add an
option to expand RECONCILE_IRQ_STATE.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802105709.27696-33-npiggin@gmail.com
powerpc/64s/exception: Expand EXCEPTION_PROLOG_COMMON_1 and 2 into caller 2019-08-30T01:14:58+00:00 Nicholas Piggin npiggin@gmail.com 2019-08-02T10:56:56+00:00 8c9fb5d4f3ddf02fb0fa3dec2dffd6b007ac894c No generated code change except BUG line number constants. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190802105709.27696-32-npiggin@gmail.com 
No generated code change except BUG line number constants.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802105709.27696-32-npiggin@gmail.com
powerpc/64s/exception: Expand EXCEPTION_COMMON macro into caller 2019-08-30T01:14:58+00:00 Nicholas Piggin npiggin@gmail.com 2019-08-02T10:56:55+00:00 5d5e0edfd5fa2a60d0f9b8d6ece1a5ce51aae3b5 No generated code change except BUG line number constants. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190802105709.27696-31-npiggin@gmail.com 
No generated code change except BUG line number constants.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802105709.27696-31-npiggin@gmail.com
powerpc/64s/exception: Add INT_COMMON gas macro to generate common exception code 2019-08-30T01:14:57+00:00 Nicholas Piggin npiggin@gmail.com 2019-08-02T10:56:54+00:00 bcbceed40a8c355b48678d90c5c407dfca811f0e No generated code change except BUG line number constants. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190802105709.27696-30-npiggin@gmail.com 
No generated code change except BUG line number constants.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802105709.27696-30-npiggin@gmail.com
powerpc/64s/exception: Merge EXCEPTION_PROLOG_COMMON_2/3 2019-08-30T01:14:57+00:00 Nicholas Piggin npiggin@gmail.com 2019-08-02T10:56:53+00:00 9a9c739aa83d031da7468028de8a65608146eccc Merge EXCEPTION_PROLOG_COMMON_3 into EXCEPTION_PROLOG_COMMON_2. No generated code change except BUG line number constants. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190802105709.27696-29-npiggin@gmail.com 
Merge EXCEPTION_PROLOG_COMMON_3 into EXCEPTION_PROLOG_COMMON_2.

No generated code change except BUG line number constants.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802105709.27696-29-npiggin@gmail.com