arch/x86/kernel/traps_32.c:1193:31: error: dubious one-bit signed bitfield
This was being used to ensure the proper alignment of the FXSAVE/FXRSTOR data.
This would create a sparse error in the _correct_ cases, hiding further
warnings. Use BUILD_BUG_ON instead.
Signed-off-by: Harvey Harrison <[EMAIL PROTECTED]>
---
arch/x86/kernel/traps_32.c | 15 +++++----------
1 files changed, 5 insertions(+), 10 deletions(-)
diff --git a/arch/x86/kernel/traps_32.c b/arch/x86/kernel/traps_32.c
index 2f94f69..47ca425 100644
--- a/arch/x86/kernel/traps_32.c
+++ b/arch/x86/kernel/traps_32.c
@@ -1182,17 +1182,12 @@ void __init trap_init(void)
#endif
set_trap_gate(19,&simd_coprocessor_error);
+ /*
+ * Verify that the FXSAVE/FXRSTOR data will be 16-byte aligned.
+ * Generate a build-time error if the alignment is wrong.
+ */
+ BUILD_BUG_ON(offsetof(struct task_struct, thread.i387.fxsave) & 15);
if (cpu_has_fxsr) {
- /*
- * Verify that the FXSAVE/FXRSTOR data will be 16-byte aligned.
- * Generates a compile-time "error: zero width for bit-field" if
- * the alignment is wrong.
- */
- struct fxsrAlignAssert {
- int _:!(offsetof(struct task_struct,
- thread.i387.fxsave) & 15);
- };
-
printk(KERN_INFO "Enabling fast FPU save and restore... ");
set_in_cr4(X86_CR4_OSFXSR);
printk("done.\n");
--
1.5.4.rc5.1138.g2602
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