linux-riscv · linux-riscv-bot · Sep 9, 2026 · Sep 9, 2026 · Sep 9, 2026 · Sep 9, 2026
diff --git a/MAINTAINERS b/MAINTAINERS
@@ -11064,8 +11064,8 @@ M:	Vincenzo Frascino <vincenzo.frascino@arm.com>
 L:	linux-kernel@vger.kernel.org
 S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers/vdso
-F:	include/asm-generic/vdso/vsyscall.h
 F:	include/linux/vdso_datastore.h
+F:	include/linux/vdso_time.h
 F:	include/vdso/
 F:	kernel/time/namespace_vdso.c
 F:	kernel/time/vsyscall.c

diff --git a/arch/arm/include/asm/vdso/vsyscall.h b/arch/arm/include/asm/vdso/vsyscall.h
@@ -2,8 +2,6 @@
 #ifndef __ASM_VDSO_VSYSCALL_H
 #define __ASM_VDSO_VSYSCALL_H
 
-#ifndef __ASSEMBLY__
-
 #include <vdso/datapage.h>
 #include <asm/cacheflush.h>
 
@@ -14,9 +12,4 @@ void __arch_sync_vdso_time_data(struct vdso_time_data *vdata)
 }
 #define __arch_sync_vdso_time_data __arch_sync_vdso_time_data
 
-/* The asm-generic header needs to be included after the definitions above */
-#include <asm-generic/vdso/vsyscall.h>
-
-#endif /* !__ASSEMBLY__ */
-
 #endif /* __ASM_VDSO_VSYSCALL_H */
diff --git a/arch/arm/kernel/vdso.c b/arch/arm/kernel/vdso.c
@@ -23,7 +23,6 @@
 #include <asm/vdso.h>
 #include <clocksource/arm_arch_timer.h>
 #include <vdso/helpers.h>
-#include <vdso/vsyscall.h>
 
 #define MAX_SYMNAME	64
 

diff --git a/arch/arm64/include/asm/vdso/getrandom.h b/arch/arm64/include/asm/vdso/getrandom.h
@@ -6,7 +6,6 @@
 #ifndef __ASSEMBLER__
 
 #include <asm/unistd.h>
-#include <asm/vdso/vsyscall.h>
 #include <vdso/datapage.h>
 
 /**

diff --git a/arch/arm64/include/asm/vdso/vsyscall.h b/arch/arm64/include/asm/vdso/vsyscall.h
@@ -2,8 +2,6 @@
 #ifndef __ASM_VDSO_VSYSCALL_H
 #define __ASM_VDSO_VSYSCALL_H
 
-#ifndef __ASSEMBLER__
-
 #include <vdso/datapage.h>
 
 #define VDSO_PRECISION_MASK	~(0xFF00ULL<<48)
@@ -19,9 +17,4 @@ void __arch_update_vdso_clock(struct vdso_clock *vc)
 }
 #define __arch_update_vdso_clock __arch_update_vdso_clock
 
-/* The asm-generic header needs to be included after the definitions above */
-#include <asm-generic/vdso/vsyscall.h>
-
-#endif /* !__ASSEMBLER__ */
-
 #endif /* __ASM_VDSO_VSYSCALL_H */
diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c
@@ -22,7 +22,6 @@
 #include <linux/vmalloc.h>
 #include <vdso/datapage.h>
 #include <vdso/helpers.h>
-#include <vdso/vsyscall.h>
 
 #include <asm/cacheflush.h>
 #include <asm/signal32.h>

diff --git a/arch/arm64/kernel/vdso/vdso.lds.S b/arch/arm64/kernel/vdso/vdso.lds.S
@@ -11,7 +11,6 @@
 #include <linux/const.h>
 #include <asm/page.h>
 #include <asm/vdso.h>
-#include <asm/vdso/vsyscall.h>
 #include <asm-generic/vmlinux.lds.h>
 #include <vdso/datapage.h>
 

diff --git a/arch/loongarch/include/asm/vdso/vsyscall.h b/arch/loongarch/include/asm/vdso/vsyscall.h
diff --git a/arch/loongarch/kernel/vdso.c b/arch/loongarch/kernel/vdso.c
@@ -20,7 +20,6 @@
 #include <asm/vdso.h>
 #include <asm/vdso/vdso.h>
 #include <vdso/helpers.h>
-#include <vdso/vsyscall.h>
 #include <vdso/datapage.h>
 #include <generated/vdso-offsets.h>
 

diff --git a/arch/mips/include/asm/vdso/vsyscall.h b/arch/mips/include/asm/vdso/vsyscall.h
diff --git a/arch/mips/kernel/vdso.c b/arch/mips/kernel/vdso.c
@@ -23,7 +23,6 @@
 #include <asm/vdso.h>
 #include <asm/vdso/vdso.h>
 #include <vdso/helpers.h>
-#include <vdso/vsyscall.h>
 
 static_assert(VDSO_NR_PAGES == __VDSO_PAGES);
 

diff --git a/arch/powerpc/include/asm/vdso/vsyscall.h b/arch/powerpc/include/asm/vdso/vsyscall.h
diff --git a/arch/riscv/include/asm/vdso/vsyscall.h b/arch/riscv/include/asm/vdso/vsyscall.h
diff --git a/arch/riscv/kernel/sys_hwprobe.c b/arch/riscv/kernel/sys_hwprobe.c
@@ -18,7 +18,7 @@
 #include <asm/vendor_extensions/mips_hwprobe.h>
 #include <asm/vendor_extensions/sifive_hwprobe.h>
 #include <asm/vendor_extensions/thead_hwprobe.h>
-#include <vdso/vsyscall.h>
+#include <vdso/datapage.h>
 
 
 #define EXT_KEY(isa_arg, ext, pv, missing)					\

diff --git a/arch/riscv/kernel/vdso.c b/arch/riscv/kernel/vdso.c
@@ -15,7 +15,6 @@
 #include <asm/vdso.h>
 #include <linux/vdso_datastore.h>
 #include <vdso/datapage.h>
-#include <vdso/vsyscall.h>
 
 #define VVAR_SIZE  (VDSO_NR_PAGES << PAGE_SHIFT)
 

diff --git a/arch/s390/include/asm/vdso/getrandom.h b/arch/s390/include/asm/vdso/getrandom.h
@@ -6,7 +6,6 @@
 #ifndef __ASSEMBLER__
 
 #include <vdso/datapage.h>
-#include <asm/vdso/vsyscall.h>
 #include <asm/syscall.h>
 #include <asm/unistd.h>
 #include <asm/page.h>

diff --git a/arch/s390/include/asm/vdso/vsyscall.h b/arch/s390/include/asm/vdso/vsyscall.h
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
@@ -39,7 +39,7 @@
 #include <linux/gfp.h>
 #include <linux/kprobes.h>
 #include <linux/uaccess.h>
-#include <vdso/vsyscall.h>
+#include <linux/vdso_time.h>
 #include <vdso/clocksource.h>
 #include <vdso/helpers.h>
 #include <asm/facility.h>
@@ -527,7 +527,7 @@ static int stp_sync_clock(void *data)
 			cpu_relax();
 		rc = 0;
 		if (stp_info.todoff || stp_info.tmd != 2) {
-			flags = vdso_update_begin();
+			flags = vdso_time_update_begin();
 			rc = chsc_sstpc(stp_page, STP_OP_SYNC, 0,
 					&clock_delta);
 			if (rc == 0) {
@@ -537,7 +537,7 @@ static int stp_sync_clock(void *data)
 				if (rc == 0 && stp_info.tmd != 2)
 					rc = -EAGAIN;
 			}
-			vdso_update_end(flags);
+			vdso_time_update_end(flags);
 		}
 		sync->in_sync = rc ? -EAGAIN : 1;
 		xchg(&first, 0);

diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c
@@ -18,7 +18,6 @@
 #include <linux/random.h>
 #include <linux/vdso_datastore.h>
 #include <vdso/datapage.h>
-#include <asm/vdso/vsyscall.h>
 #include <asm/alternative.h>
 #include <asm/vdso.h>
 

diff --git a/arch/s390/kernel/vdso/vdso.lds.S b/arch/s390/kernel/vdso/vdso.lds.S
@@ -4,7 +4,6 @@
  * library
  */
 
-#include <asm/vdso/vsyscall.h>
 #include <asm/page.h>
 #include <asm/vdso.h>
 #include <asm-generic/vmlinux.lds.h>

diff --git a/arch/sparc/include/asm/vdso.h b/arch/sparc/include/asm/vdso.h
@@ -5,6 +5,10 @@
 #ifndef _ASM_SPARC_VDSO_H
 #define _ASM_SPARC_VDSO_H
 
+#define __VDSO_PAGES 4
+
+#ifndef __ASSEMBLER__
+
 struct vdso_image {
 	void *data;
 	unsigned long size;   /* Always a multiple of PAGE_SIZE */
@@ -17,4 +21,6 @@ extern const struct vdso_image vdso_image_64_builtin;
 extern const struct vdso_image vdso_image_32_builtin;
 #endif
 
+#endif /* __ASSEMBLER__ */
+
 #endif /* _ASM_SPARC_VDSO_H */
diff --git a/arch/sparc/include/asm/vdso/vsyscall.h b/arch/sparc/include/asm/vdso/vsyscall.h
diff --git a/arch/sparc/vdso/vdso-layout.lds.S b/arch/sparc/vdso/vdso-layout.lds.S
@@ -6,7 +6,7 @@
 
 #include <vdso/datapage.h>
 #include <vdso/page.h>
-#include <asm/vdso/vsyscall.h>
+#include <asm/vdso.h>
 
 SECTIONS
 {

diff --git a/arch/sparc/vdso/vma.c b/arch/sparc/vdso/vma.c
@@ -23,7 +23,6 @@
 #include <asm/page.h>
 
 #include <vdso/datapage.h>
-#include <asm/vdso/vsyscall.h>
 
 unsigned int __read_mostly vdso_enabled = 1;
 

diff --git a/arch/x86/entry/vdso/common/vdso-layout.lds.S b/arch/x86/entry/vdso/common/vdso-layout.lds.S
@@ -1,6 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 #include <asm/vdso.h>
-#include <asm/vdso/vsyscall.h>
 #include <vdso/datapage.h>
 
 /*

diff --git a/arch/x86/entry/vdso/vma.c b/arch/x86/entry/vdso/vma.c
@@ -25,7 +25,6 @@
 #include <asm/page.h>
 #include <asm/desc.h>
 #include <asm/cpufeature.h>
-#include <asm/vdso/vsyscall.h>
 #include <clocksource/hyperv_timer.h>
 
 static_assert(VDSO_NR_PAGES + VDSO_NR_VCLOCK_PAGES == __VDSO_PAGES);

diff --git a/arch/x86/include/asm/vdso.h b/arch/x86/include/asm/vdso.h
@@ -6,6 +6,13 @@
 #include <linux/linkage.h>
 #include <linux/init.h>
 
+#define __VDSO_PAGES	6
+
+#define VDSO_NR_VCLOCK_PAGES	2
+#define VDSO_VCLOCK_PAGES_START(_b)	((_b) + (__VDSO_PAGES - VDSO_NR_VCLOCK_PAGES) * PAGE_SIZE)
+#define VDSO_PAGE_PVCLOCK_OFFSET	0
+#define VDSO_PAGE_HVCLOCK_OFFSET	1
+
 #ifndef __ASSEMBLER__
 
 #include <linux/mm_types.h>

diff --git a/arch/x86/include/asm/vdso/vsyscall.h b/arch/x86/include/asm/vdso/vsyscall.h
diff --git a/include/asm-generic/Kbuild b/include/asm-generic/Kbuild
@@ -63,6 +63,7 @@ mandatory-y += trace_clock.h
 mandatory-y += uaccess.h
 mandatory-y += unwind_user.h
 mandatory-y += vdso/clocksource.h
+mandatory-y += vdso/vsyscall.h
 mandatory-y += vermagic.h
 mandatory-y += vga.h
 mandatory-y += video.h

diff --git a/include/asm-generic/vdso/vsyscall.h b/include/asm-generic/vdso/vsyscall.h
@@ -1,35 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __ASM_GENERIC_VSYSCALL_H
-#define __ASM_GENERIC_VSYSCALL_H
-
-#ifndef __ASSEMBLER__
-
-#ifndef __arch_get_vdso_u_time_data
-static __always_inline const struct vdso_time_data *__arch_get_vdso_u_time_data(void)
-{
-	return &vdso_u_time_data;
-}
-#endif
-
-#ifndef __arch_get_vdso_u_rng_data
-static __always_inline const struct vdso_rng_data *__arch_get_vdso_u_rng_data(void)
-{
-	return &vdso_u_rng_data;
-}
-#endif
-
-#ifndef __arch_update_vdso_clock
-static __always_inline void __arch_update_vdso_clock(struct vdso_clock *vc)
-{
-}
-#endif /* __arch_update_vdso_clock */
-
-#ifndef __arch_sync_vdso_time_data
-static __always_inline void __arch_sync_vdso_time_data(struct vdso_time_data *vdata)
-{
-}
-#endif /* __arch_sync_vdso_time_data */
-
-#endif /* !__ASSEMBLER__ */
-
-#endif /* __ASM_GENERIC_VSYSCALL_H */

diff --git a/include/linux/vdso_time.h b/include/linux/vdso_time.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_VDSO_TIME_H
+#define _LINUX_VDSO_TIME_H
+
+unsigned long vdso_time_update_begin(void);
+void vdso_time_update_end(unsigned long flags);
+
+#endif /* _LINUX_VDSO_TIME_H */