The SYSENTER stack is only used in configurations that support 32-bit
code and, hence, SYSENTER. Remove it in 64-bit non-compat configurations.
Signed-off-by: Andy Lutomirski <l...@kernel.org>
---
arch/x86/include/asm/processor.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index befc1341f110..786f50e4bd90 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -298,10 +298,12 @@ struct tss_struct {
*/
unsigned long io_bitmap[IO_BITMAP_LONGS + 1];
+#if defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION)
/*
* Space for the temporary SYSENTER stack:
*/
unsigned long SYSENTER_stack[64];
+#endif
} ____cacheline_aligned;
--
2.4.3
--
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