debian/patches/0009-Fix-CONFIG_X86_DEBUG_FPU-build-failure.patch

   1 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
   2 From: Brian Behlendorf <behlendorf1@llnl.gov>
   3 Date: Wed, 17 Jul 2019 09:14:36 -0700
   4 Subject: [PATCH] Fix CONFIG_X86_DEBUG_FPU build failure
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 When CONFIG_X86_DEBUG_FPU is defined the alternatives_patched symbol
  10 is pulled in as a dependency which results in a build failure.  To
  11 prevent this undefine CONFIG_X86_DEBUG_FPU to disable the WARN_ON_FPU()
  12 macro and rely on WARN_ON_ONCE debugging checks which were previously
  13 added.
  14
  15 Reviewed-by: Tony Hutter <hutter2@llnl.gov>
  16 Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
  17 Closes #9041
  18 Closes #9049
  19 (cherry picked from commit 095b5412b31c07cad5cec74a4eb5ace011c92b27)
  20 Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
  21 ---
  22  include/linux/simd_x86.h | 9 +++++++++
  23  1 file changed, 9 insertions(+)
  24
  25 diff --git a/include/linux/simd_x86.h b/include/linux/simd_x86.h
  26 index 2d7a1c3a5..5f243e0cc 100644
  27 --- a/include/linux/simd_x86.h
  28 +++ b/include/linux/simd_x86.h
  29 @@ -82,6 +82,15 @@
  30
  31  #if defined(_KERNEL)
  32
  33 +/*
  34 + * Disable the WARN_ON_FPU() macro to prevent additional dependencies
  35 + * when providing the kfpu_* functions.  Relevant warnings are included
  36 + * as appropriate and are unconditionally enabled.
  37 + */
  38 +#if defined(CONFIG_X86_DEBUG_FPU) && !defined(KERNEL_EXPORTS_X86_FPU)
  39 +#undef CONFIG_X86_DEBUG_FPU
  40 +#endif
  41 +
  42  #if defined(HAVE_KERNEL_FPU_API_HEADER)
  43  #include <asm/fpu/api.h>
  44  #include <asm/fpu/internal.h>