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