Commits · 12ab11a2c09b30c1938c8e82e53908f8a33426d5 · Kirill Smelkov / linux

04 Oct, 2016 40 commits

powerpc/64: Align hot loops of memset() and backwards_memcpy() · 12ab11a2

Anton Blanchard authored Aug 04, 2016

Align the hot loops in our assembly implementation of memset()
and backwards_memcpy().

backwards_memcpy() is called from tcp_v4_rcv(), so we might
want to optimise this a little more.
Signed-off-by: Anton Blanchard <anton@samba.org>
Reviewed-by: Nick Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

12ab11a2

powerpc/64s: Remove unused exception code, small cleanups · e0319829

Nicholas Piggin authored Sep 21, 2016

This was not done before the big patches because I only noticed
them afterwards. It has become much easier to see which handlers
are branched to from which exception vectors now, and to see
exactly what vector space is being used for what.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

e0319829

powerpc/64s: Use a single macro for both parts of OOL exception · a33532af

Nicholas Piggin authored Sep 21, 2016

Simple substitution. This is possible now that both parts of the OOL
initial handler get linked into their correct location.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

a33532af

powerpc/64s: Move __replay_interrupt function below handlers · 0f0c6ca1

Nicholas Piggin authored Sep 21, 2016

This is not an exception handler as such, it's called from
local_irq_enable(), not exception entry.

Also clean up some now redundant comments at the end of the
consolidation series.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

0f0c6ca1

powerpc/64s: Consolidate CBE Thermal 0x1800 interrupt · 3965f8ab

Nicholas Piggin authored Sep 21, 2016

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

3965f8ab

powerpc/64s: Consolidate Altivec 0x1700 interrupt · b51c079e

Nicholas Piggin authored Sep 21, 2016

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

b51c079e

powerpc/64s: Consolidate Debug 0x1600 interrupt · 69a79344

Nicholas Piggin authored Sep 21, 2016

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

69a79344

powerpc/64s: Consolidate Softpatch 0x1500 interrupt · d7e89849

Nicholas Piggin authored Sep 21, 2016

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

d7e89849

powerpc/64s: Consolidate Instruction Breakpoint 0x1300 interrupt · 4e96dbbf
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
4e96dbbf
powerpc/64s: Consolidate CBE System Error 0x1200 interrupt · ff1b3206
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
ff1b3206
powerpc/64s: Consolidate Reserved 0xfa0-0x1200 interrupts · e46b964c
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
e46b964c
powerpc/64s: Consolidate Hypervisor Facility Unavailable 0xf80 interrupt · 14b0072c
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
14b0072c
powerpc/64s: Consolidate Facility Unavailable 0xf60 interrupt · 1134713c
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
1134713c
powerpc/64s: Consolidate VSX Unavailable 0xf40 interrupt · 792cbddd
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
792cbddd
powerpc/64s: Consolidate Vector Unavailable 0xf20 interrupt · d1a0ca9c
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
d1a0ca9c
powerpc/64s: Consolidate Performance Monitor 0xf00 interrupt · b1c7f150
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
b1c7f150
powerpc/64s: Consolidate Reserved 0xec0, 0xee0 interrupts · bda7fea2
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
bda7fea2
powerpc/64s: Consolidate Hypervisor Virtualization 0xea0 interrupt · 74408776
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
74408776
powerpc/64s: Consolidate Directed Hypervisor Doorbell 0xe80 interrupt · 9bcb81bf
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
9bcb81bf
powerpc/64s: Consolidate Hypervisor Maintenance 0xe60 interrupt · 62f9b03b
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
62f9b03b
powerpc/64s: Consolidate Hypervisor Emulation Assistance 0xe40 interrupt · 031b4026
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
031b4026
powerpc/64s: Consolidate Hypervisor Instruction Storage 0xe20 interrupt · 82517cab
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
82517cab
powerpc/64s: Consolidate Hypervisor Data Storage 0xe00 interrupt · f5c32c1d
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
f5c32c1d

powerpc/64s: Consolidate Trace 0xd00 interrupt · bc6675c6

Nicholas Piggin authored Sep 21, 2016

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

bc6675c6

powerpc/64s: Consolidate System Call 0xc00 interrupt · d807ad37

Nicholas Piggin authored Sep 21, 2016

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

d807ad37

powerpc/64s: Consolidate Reserved 0xb00 interrupt · 341215dc

Nicholas Piggin authored Sep 21, 2016

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

341215dc

powerpc/64s: Consolidate Directed Privileged Doorbell 0xa00 interrupt · ca243163
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
ca243163
powerpc/64s: Consolidate Hypervisor Decrementer 0x980 interrupt · facc6d74
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
facc6d74

powerpc/64s: Consolidate Decrementer 0x900 interrupt · 39c0da57

Nicholas Piggin authored Sep 21, 2016

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

39c0da57

powerpc/64s: Consolidate FP Unavailable 0x800 interrupt · c78d9b97
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
c78d9b97

powerpc/64s: Consolidate Program 0x700 interrupt · 11e87346

Nicholas Piggin authored Sep 21, 2016

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

11e87346

powerpc/64s: Consolidate Alignment 0x600 interrupt · f9aa6714

Nicholas Piggin authored Sep 21, 2016

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

f9aa6714

powerpc/64s: Consolidate External 0x500 interrupt · c138e588

Nicholas Piggin authored Sep 21, 2016

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

c138e588

powerpc/64s: Consolidate Instruction Segment 0x480 interrupt · 8d04631a
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
8d04631a
powerpc/64s: Consolidate Instruction Storage 0x400 interrupt · 27ce77df
Nicholas Piggin authored Sep 21, 2016
```
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
```
27ce77df

powerpc/64s: Consolidate Data Segment 0x380 interrupt · 2b9af6e4

Nicholas Piggin authored Sep 21, 2016

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

2b9af6e4

powerpc/64s: Consolidate Data Storage 0x300 interrupt · 80795e6c

Nicholas Piggin authored Sep 21, 2016

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

80795e6c

powerpc/64s: Consolidate Machine Check 0x200 interrupt · afcf0095

Nicholas Piggin authored Sep 21, 2016

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

afcf0095

powerpc/64s: Consolidate System Reset 0x100 interrupt · 582baf44

Nicholas Piggin authored Sep 21, 2016

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

582baf44

powerpc: Use gas sections for arranging exception vectors · 57f26649

Nicholas Piggin authored Sep 28, 2016

Use assembler sections of fixed size and location to arrange the 64-bit
Book3S exception vector code (64-bit Book3E also uses it in head_64.S
for 0x0..0x100).

This allows better flexibility in arranging exception code and hiding
unimportant details behind macros.

Gas sections can be a bit painful to use this way, mainly because the
assembler does not know where they will be finally linked. Taking
absolute addresses requires a bit of trickery for example, but it can
be hidden behind macros for the most part.

Generated code is mostly the same except locations, offsets, alignments.

The "+ 0x2" is only required for the trap number / kvm exit number,
which gets loaded as a constant into a register.

Previously, code also used + 0x2 for label names, but we changed to
using "H" to distinguish HV case for that. Remove the last vestiges
of that.

__after_prom_start is taking absolute address of a label in another
fixed section. Newer toolchains seemed to compile this okay, but older
ones do not. FIXED_SYMBOL_ABS_ADDR is more foolproof, it just takes an
additional line to define.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

57f26649