linux-stable.git/arch/alpha, branch v4.9.321

alpha: define get_cycles macro for arch-override

2022-06-25T09:45:13+00:00

commit 1097710bc9660e1e588cf2186a35db3d95c4d258 upstream.

Alpha defines a get_cycles() function, but it does not do the usual
`#define get_cycles get_cycles` dance, making it impossible for generic
code to see if an arch-specific function was defined. While the
get_cycles() ifdef is not currently used, the following timekeeping
patch in this series will depend on the macro existing (or not existing)
when defining random_get_entropy().

Cc: Thomas Gleixner 
Cc: Arnd Bergmann 
Cc: Richard Henderson 
Cc: Ivan Kokshaysky 
Acked-by: Matt Turner 
Signed-off-by: Jason A. Donenfeld 
Signed-off-by: Greg Kroah-Hartman

alpha: Declare virt_to_phys and virt_to_bus parameter as pointer to volatile

2021-10-06T08:23:40+00:00

[ Upstream commit 35a3f4ef0ab543daa1725b0c963eb8c05e3376f8 ]

Some drivers pass a pointer to volatile data to virt_to_bus() and
virt_to_phys(), and that works fine.  One exception is alpha.  This
results in a number of compile errors such as

  drivers/net/wan/lmc/lmc_main.c: In function 'lmc_softreset':
  drivers/net/wan/lmc/lmc_main.c:1782:50: error:
	passing argument 1 of 'virt_to_bus' discards 'volatile'
	qualifier from pointer target type

  drivers/atm/ambassador.c: In function 'do_loader_command':
  drivers/atm/ambassador.c:1747:58: error:
	passing argument 1 of 'virt_to_bus' discards 'volatile'
	qualifier from pointer target type

Declare the parameter of virt_to_phys and virt_to_bus as pointer to
volatile to fix the problem.

Signed-off-by: Guenter Roeck 
Acked-by: Arnd Bergmann 
Signed-off-by: Linus Torvalds 
Signed-off-by: Sasha Levin

alpha: Send stop IPI to send to online CPUs

2021-08-15T11:01:04+00:00

[ Upstream commit caace6ca4e06f09413fb8f8a63319594cfb7d47d ]

This issue was noticed while debugging a shutdown issue where some
secondary CPUs are not being shutdown correctly.  A fix for that [1] requires
that secondary cpus be offlined using the cpu_online_mask so that the
stop operation is a no-op if CPU HOTPLUG is disabled.  I, like the author in
[1] looked at the architectures and found that alpha is one of two
architectures that executes smp_send_stop() on all possible CPUs.

On alpha, smp_send_stop() sends an IPI to all possible CPUs but only needs
to send them to online CPUs.

Send the stop IPI to only the online CPUs.

[1] https://lkml.org/lkml/2020/1/10/250

Signed-off-by: Prarit Bhargava 
Cc: Richard Henderson 
Cc: Ivan Kokshaysky 
Signed-off-by: Matt Turner 
Signed-off-by: Sasha Levin

alpha: switch __copy_user() and __do_clean_user() to normal calling conventions

2021-03-17T15:10:18+00:00

commit 8525023121de4848b5f0a7d867ffeadbc477774d upstream.

They used to need odd calling conventions due to old exception handling
mechanism, the last remnants of which had disappeared back in 2002.

Signed-off-by: Al Viro 
Cc: Guenter Roeck 
Signed-off-by: Greg Kroah-Hartman

alpha: Package string routines together

2021-03-17T15:10:18+00:00

commit 4758ce82e66711b1a4557577e30a5f9b88d4a4b5 upstream.

There are direct branches between {str*cpy,str*cat} and stx*cpy.
Ensure the branches are within range by merging these objects.

Signed-off-by: Richard Henderson 
Signed-off-by: Matt Turner 
Cc: Guenter Roeck 
Signed-off-by: Greg Kroah-Hartman

alpha: make short build log available for division routines

2021-03-17T15:10:18+00:00

commit 3eec0291830e4c28d09f73bab247f3b59172022b upstream.

This enables the Kbuild standard log style as follows:

  AS      arch/alpha/lib/__divlu.o
  AS      arch/alpha/lib/__divqu.o
  AS      arch/alpha/lib/__remlu.o
  AS      arch/alpha/lib/__remqu.o

Signed-off-by: Masahiro Yamada 
Cc: Guenter Roeck 
Signed-off-by: Greg Kroah-Hartman

alpha: merge build rules of division routines

2021-03-17T15:10:18+00:00

commit e19a4e3f1bffe45b8e2ea67fcfb0c9c88278c4cc upstream.

These four objects are generated by the same build rule, with
different compile options.  The build rules can be merged.

Signed-off-by: Masahiro Yamada 
Cc: Guenter Roeck 
Signed-off-by: Greg Kroah-Hartman

alpha: add $(src)/ rather than $(obj)/ to make source file path

2021-03-17T15:10:18+00:00

commit 5ed78e5523fd9ba77b8444d380d54da1f88c53fc upstream.

$(ev6-y)divide.S is a source file, not a build-time generated file.
So, it should be prefixed with $(src)/ rather than $(obj)/.

Signed-off-by: Masahiro Yamada 
Cc: Guenter Roeck 
Signed-off-by: Greg Kroah-Hartman

alpha: fix annotation of io{read,write}{16,32}be()

2020-08-26T08:29:05+00:00

[ Upstream commit bd72866b8da499e60633ff28f8a4f6e09ca78efe ]

These accessors must be used to read/write a big-endian bus.  The value
returned or written is native-endian.

However, these accessors are defined using be{16,32}_to_cpu() or
cpu_to_be{16,32}() to make the endian conversion but these expect a
__be{16,32} when none is present.  Keeping them would need a force cast
that would solve nothing at all.

So, do the conversion using swab{16,32}, like done in asm-generic for
similar situations.

Reported-by: kernel test robot 
Signed-off-by: Luc Van Oostenryck 
Signed-off-by: Andrew Morton 
Cc: Richard Henderson 
Cc: Ivan Kokshaysky 
Cc: Matt Turner 
Cc: Stephen Boyd 
Cc: Arnd Bergmann 
Link: http://lkml.kernel.org/r/20200622114232.80039-1-luc.vanoostenryck@gmail.com
Signed-off-by: Linus Torvalds 
Signed-off-by: Sasha Levin

alpha: Fix Eiger NR_IRQS to 128

2019-02-20T09:18:32+00:00

commit bfc913682464f45bc4d6044084e370f9048de9d5 upstream.

Eiger machine vector definition has nr_irqs 128, and working 2.6.26
boot shows SCSI getting IRQ-s 64 and 65. Current kernel boot fails
because Symbios SCSI fails to request IRQ-s and does not find the disks.
It has been broken at least since 3.18 - the earliest I could test with
my gcc-5.

The headers have moved around and possibly another order of defines has
worked in the past - but since 128 seems to be correct and used, fix
arch/alpha/include/asm/irq.h to have NR_IRQS=128 for Eiger.

This fixes 4.19-rc7 boot on my Force Flexor A264 (Eiger subarch).

Cc: stable@vger.kernel.org # v3.18+
Signed-off-by: Meelis Roos 
Signed-off-by: Matt Turner 
Signed-off-by: Greg Kroah-Hartman