GS is a special segment on x86_64, move load_gs_index() to its own new
header file to simplify header inclusion.
No change in functionality.
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Signed-off-by: Xin Li <xin3.li@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230112072032.35626-5-xin3.li@intel.com
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef _ASM_X86_GSSEG_H
+#define _ASM_X86_GSSEG_H
+
+#include <linux/types.h>
+
+#include <asm/asm.h>
+#include <asm/cpufeature.h>
+#include <asm/alternative.h>
+#include <asm/processor.h>
+#include <asm/nops.h>
+
+#ifdef CONFIG_X86_64
+
+extern asmlinkage void asm_load_gs_index(u16 selector);
+
+static inline void native_load_gs_index(unsigned int selector)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ asm_load_gs_index(selector);
+ local_irq_restore(flags);
+}
+
+#endif /* CONFIG_X86_64 */
+
+#ifndef CONFIG_PARAVIRT_XXL
+
+static inline void load_gs_index(unsigned int selector)
+{
+#ifdef CONFIG_X86_64
+ native_load_gs_index(selector);
+#else
+ loadsegment(gs, selector);
+#endif
+}
+
+#endif /* CONFIG_PARAVIRT_XXL */
+
+#endif /* _ASM_X86_GSSEG_H */
#include <asm/tlbflush.h>
#include <asm/paravirt.h>
#include <asm/debugreg.h>
+#include <asm/gsseg.h>
extern atomic64_t last_mm_ctx_id;
asm volatile("wbinvd": : :"memory");
}
-extern asmlinkage void asm_load_gs_index(u16 selector);
-
-static inline void native_load_gs_index(unsigned int selector)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- asm_load_gs_index(selector);
- local_irq_restore(flags);
-}
-
static inline unsigned long __read_cr4(void)
{
return native_read_cr4();
native_wbinvd();
}
-
-static inline void load_gs_index(unsigned int selector)
-{
-#ifdef CONFIG_X86_64
- native_load_gs_index(selector);
-#else
- loadsegment(gs, selector);
-#endif
-}
-
#endif /* CONFIG_PARAVIRT_XXL */
static inline void clflush(volatile void *__p)
#include <asm/special_insns.h>
#include <asm/tlb.h>
#include <asm/io_bitmap.h>
+#include <asm/gsseg.h>
/*
* nop stub, which must not clobber anything *including the stack* to
#include <asm/sigframe.h>
#include <asm/sighandling.h>
#include <asm/smap.h>
+#include <asm/gsseg.h>
#ifdef CONFIG_IA32_EMULATION
#include <asm/ia32_unistd.h>
#include <asm/ldt.h>
#include <asm/processor.h>
#include <asm/proto.h>
+#include <asm/gsseg.h>
#include "tls.h"