linux-stable.git/arch/xtensa, branch v6.1.78

xtensa: boot/lib: fix function prototypes

2023-10-06T12:56:49+00:00

[ Upstream commit f54d02c8f2cc4b46ba2a3bd8252a6750453b6f2b ]

Add function prototype for gunzip() to the boot library code and make
exit() and zalloc() static.

arch/xtensa/boot/lib/zmem.c:8:6: warning: no previous prototype for 'exit' [-Wmissing-prototypes]
    8 | void exit (void)
arch/xtensa/boot/lib/zmem.c:13:7: warning: no previous prototype for 'zalloc' [-Wmissing-prototypes]
   13 | void *zalloc(unsigned size)
arch/xtensa/boot/lib/zmem.c:35:6: warning: no previous prototype for 'gunzip' [-Wmissing-prototypes]
   35 | void gunzip (void *dst, int dstlen, unsigned char *src, int *lenp)

Fixes: 4bedea945451 ("xtensa: Architecture support for Tensilica Xtensa Part 2")
Fixes: e7d163f76665 ("xtensa: Removed local copy of zlib and fixed O= support")
Suggested-by: Randy Dunlap 
Signed-off-by: Max Filippov 
Signed-off-by: Sasha Levin

xtensa: umulsidi3: fix conditional expression

2023-10-06T12:56:48+00:00

[ Upstream commit 9aecda97ec3deecbfa7670877c8ddfd3d0fc87c4 ]

Even when a variant has one or more of these defines set to 1, the
multiplier code paths are not used. Change the expression so that the
correct code paths are used.

arch/xtensa/lib/umulsidi3.S:44:38: warning: "XCHAL_NO_MUL" is not defined, evaluates to 0 [-Wundef]
   44 | #if defined(__XTENSA_CALL0_ABI__) && XCHAL_NO_MUL
arch/xtensa/lib/umulsidi3.S:145:38: warning: "XCHAL_NO_MUL" is not defined, evaluates to 0 [-Wundef]
  145 | #if defined(__XTENSA_CALL0_ABI__) && XCHAL_NO_MUL
arch/xtensa/lib/umulsidi3.S:159:5: warning: "XCHAL_NO_MUL" is not defined, evaluates to 0 [-Wundef]
  159 | #if XCHAL_NO_MUL

Fixes: 8939c58d68f9 ("xtensa: add __umulsidi3 helper")
Signed-off-by: Randy Dunlap 
Cc: Chris Zankel 
Cc: Max Filippov 
Message-Id: <20230920052139.10570-16-rdunlap@infradead.org>
Signed-off-by: Max Filippov 
Signed-off-by: Sasha Levin

xtensa: boot: don't add include-dirs

2023-10-06T12:56:48+00:00

[ Upstream commit 54d3d7d363823782c3444ddc41bb8cf1edc80514 ]

Drop the -I options to prevent build warnings since there
is not boot/include directory:

cc1: warning: arch/xtensa/boot/include: No such file or directory [-Wmissing-include-dirs]

Fixes: 437374e9a950 ("restore arch/{ppc/xtensa}/boot cflags")
Fixes: 4bedea945451 ("xtensa: Architecture support for Tensilica Xtensa Part 2")
Signed-off-by: Randy Dunlap 
Cc: Chris Zankel 
Cc: Max Filippov 
Message-Id: <20230920052139.10570-15-rdunlap@infradead.org>
Signed-off-by: Max Filippov 
Signed-off-by: Sasha Levin

xtensa: iss/network: make functions static

2023-10-06T12:56:48+00:00

[ Upstream commit 1b59efeb59851277266318f4e0132aa61ce3455e ]

Make 2 functions static to prevent build warnings:

arch/xtensa/platforms/iss/network.c:204:16: warning: no previous prototype for 'tuntap_protocol' [-Wmissing-prototypes]
  204 | unsigned short tuntap_protocol(struct sk_buff *skb)
arch/xtensa/platforms/iss/network.c:444:6: warning: no previous prototype for 'iss_net_user_timer_expire' [-Wmissing-prototypes]
  444 | void iss_net_user_timer_expire(struct timer_list *unused)

Fixes: 7282bee78798 ("xtensa: Architecture support for Tensilica Xtensa Part 8")
Fixes: d8479a21a98b ("xtensa: Convert timers to use timer_setup()")
Signed-off-by: Randy Dunlap 
Cc: Chris Zankel 
Cc: Max Filippov 
Message-Id: <20230920052139.10570-14-rdunlap@infradead.org>
Signed-off-by: Max Filippov 
Signed-off-by: Sasha Levin

xtensa: add default definition for XCHAL_HAVE_DIV32

2023-10-06T12:56:48+00:00

[ Upstream commit 494e87ffa0159b3f879694a9231089707792a44d ]

When variant FSF is set, XCHAL_HAVE_DIV32 is not defined. Add default
definition for that macro to prevent build warnings:

arch/xtensa/lib/divsi3.S:9:5: warning: "XCHAL_HAVE_DIV32" is not defined, evaluates to 0 [-Wundef]
    9 | #if XCHAL_HAVE_DIV32
arch/xtensa/lib/modsi3.S:9:5: warning: "XCHAL_HAVE_DIV32" is not defined, evaluates to 0 [-Wundef]
    9 | #if XCHAL_HAVE_DIV32

Fixes: 173d6681380a ("xtensa: remove extra header files")
Suggested-by: Randy Dunlap 
Signed-off-by: Max Filippov 
Reported-by: kernel test robot 
Closes: lore.kernel.org/r/202309150556.t0yCdv3g-lkp@intel.com
Signed-off-by: Sasha Levin

xtensa: PMU: fix base address for the newer hardware

2023-09-13T07:43:01+00:00

commit 687eb3c42f4ad81e7c947c50e2d865f692064291 upstream.

With introduction of ERI access control in RG.0 base address of the PMU
unit registers has changed. Add support for the new PMU configuration.

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov 
Signed-off-by: Greg Kroah-Hartman

init: Remove check_bugs() leftovers

2023-08-08T18:03:47+00:00

commit 61235b24b9cb37c13fcad5b9596d59a1afdcec30 upstream

Everything is converted over to arch_cpu_finalize_init(). Remove the
check_bugs() leftovers including the empty stubs in asm-generic, alpha,
parisc, powerpc and xtensa.

Signed-off-by: Thomas Gleixner 
Reviewed-by: Richard Henderson 
Link: https://lore.kernel.org/r/20230613224545.553215951@linutronix.de
Signed-off-by: Daniel Sneddon 
Signed-off-by: Greg Kroah-Hartman

xtensa: ISS: fix call to split_if_spec

2023-07-23T11:49:45+00:00

commit bc8d5916541fa19ca5bc598eb51a5f78eb891a36 upstream.

split_if_spec expects a NULL-pointer as an end marker for the argument
list, but tuntap_probe never supplied that terminating NULL. As a result
incorrectly formatted interface specification string may cause a crash
because of the random memory access. Fix that by adding NULL terminator
to the split_if_spec argument list.

Cc: stable@vger.kernel.org
Fixes: 7282bee78798 ("[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 8")
Signed-off-by: Max Filippov 
Signed-off-by: Greg Kroah-Hartman

mm/fault: convert remaining simple cases to lock_mm_and_find_vma()

2023-07-01T11:16:25+00:00

commit a050ba1e7422f2cc60ff8bfde3f96d34d00cb585 upstream.

This does the simple pattern conversion of alpha, arc, csky, hexagon,
loongarch, nios2, sh, sparc32, and xtensa to the lock_mm_and_find_vma()
helper.  They all have the regular fault handling pattern without odd
special cases.

The remaining architectures all have something that keeps us from a
straightforward conversion: ia64 and parisc have stacks that can grow
both up as well as down (and ia64 has special address region checks).

And m68k, microblaze, openrisc, sparc64, and um end up having extra
rules about only expanding the stack down a limited amount below the
user space stack pointer.  That is something that x86 used to do too
(long long ago), and it probably could just be skipped, but it still
makes the conversion less than trivial.

Note that this conversion was done manually and with the exception of
alpha without any build testing, because I have a fairly limited cross-
building environment.  The cases are all simple, and I went through the
changes several times, but...

Signed-off-by: Linus Torvalds 
Signed-off-by: Samuel Mendoza-Jonas 
Signed-off-by: David Woodhouse 
Signed-off-by: Greg Kroah-Hartman

xtensa: add __bswap{si,di}2 helpers

2023-05-30T13:03:18+00:00

commit 034f4a7877c32a8efd6beee4d71ed14e424499a9 upstream.

gcc-13 may generate calls for __bswap{si,di}2. This breaks the kernel
build when optimization for size is selected. Add __bswap{si,di}2
helpers to fix that.

Cc: stable@vger.kernel.org
Fixes: 19c5699f9aff ("xtensa: don't link with libgcc")
Signed-off-by: Max Filippov 
Signed-off-by: Greg Kroah-Hartman