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linux-stable/arch/xtensa
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Max Filippov be75de2525 xtensa: limit offsets in __loop_cache_{all,page} 
When building kernel for xtensa cores with big cache lines (e.g. 128
bytes or more) __loop_cache_all and __loop_cache_page may generate
assembly instructions with immediate fields that are too big. This
results in the following build errors:

  arch/xtensa/mm/misc.S: Assembler messages:
  arch/xtensa/mm/misc.S:464: Error: operand 2 of 'diwbi' has invalid value '256'
  arch/xtensa/mm/misc.S:464: Error: operand 2 of 'diwbi' has invalid value '384'
  arch/xtensa/kernel/head.S: Assembler messages:
  arch/xtensa/kernel/head.S:172: Error: operand 2 of 'diu' has invalid value '256'
  arch/xtensa/kernel/head.S:172: Error: operand 2 of 'diu' has invalid value '384'
  arch/xtensa/kernel/head.S:176: Error: operand 2 of 'iiu' has invalid value '256'
  arch/xtensa/kernel/head.S:176: Error: operand 2 of 'iiu' has invalid value '384'
  arch/xtensa/kernel/head.S:255: Error: operand 2 of 'diwb' has invalid value '256'
  arch/xtensa/kernel/head.S:255: Error: operand 2 of 'diwb' has invalid value '384'

Add parameter max_immed to these macros and use it to limit values of
immediate operands. Extract common code of these macros into the new
macro __loop_cache_unroll.

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2018-08-13 20:07:54 -07:00
..
boot Xtensa improvements for v4.16: 2018-01-29 16:40:28 -08:00
configs irqdomain: Kill CONFIG_IRQ_DOMAIN_DEBUG 2018-01-24 12:32:58 +01:00
include xtensa: limit offsets in __loop_cache_{all,page} 2018-08-13 20:07:54 -07:00
kernel Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables 2018-06-14 12:21:18 +09:00
lib xtensa: add support for KASAN 2017-12-16 22:37:12 -08:00
mm signal/xtensa: Use force_sig_fault where appropriate 2018-04-25 10:44:12 -05:00
oprofile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
platforms tty: replace ->proc_fops with ->proc_show 2018-05-16 07:24:30 +02:00
variants
Kconfig Kbuild: rename HAVE_CC_STACKPROTECTOR config variable 2018-06-15 07:15:28 +09:00
Kconfig.debug License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile xtensa: build kernel with text-section-literals 2017-12-10 14:48:51 -08:00