After commit 464d1a78fbf8cf6c7fd970e7b3e2db50a320ce28 aka
"[PATCH] i386: Convert i386 PDA code to use %fs"
%fs saved during context switch moved from thread_struct to pt_regs
and value on thread_struct became unused.
I don't understand why .fs (OK, .gs first) initializer was added, kernel
clearly stopped touching it after the patch.
Signed-off-by: Alexey Dobriyan <adobri...@gmail.com>
---
arch/x86/include/asm/processor.h | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index c2cceae..a6732ff 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -428,7 +428,9 @@ struct thread_struct {
unsigned short gsindex;
#endif
unsigned long ip;
+#ifdef CONFIG_X86_64
unsigned long fs;
+#endif
unsigned long gs;
/* Hardware debugging registers: */
unsigned long debugreg0;
@@ -874,7 +876,6 @@ static inline void spin_lock_prefetch(const void *x)
.vm86_info = NULL, \
.sysenter_cs = __KERNEL_CS, \
.io_bitmap_ptr = NULL, \
- .fs = __KERNEL_PERCPU, \
}
/*
--
1.5.6.5
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