mirror of
https://github.com/torvalds/linux.git
synced 2026-05-05 15:02:40 -04:00
e93d2521b2
The generic vdso data storage cannot handle the special pvclock and hvclock pages. Split them into their own mapping, so the other vdso storage can be migrated to the generic code. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20241010-vdso-generic-base-v1-20-b64f0842d512@linutronix.de
42 lines
971 B
C
42 lines
971 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __ASM_VDSO_VSYSCALL_H
|
|
#define __ASM_VDSO_VSYSCALL_H
|
|
|
|
#define __VDSO_RND_DATA_OFFSET 640
|
|
#define __VVAR_PAGES 4
|
|
|
|
#define VDSO_NR_VCLOCK_PAGES 2
|
|
#define VDSO_PAGE_PVCLOCK_OFFSET 0
|
|
#define VDSO_PAGE_HVCLOCK_OFFSET 1
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#include <vdso/datapage.h>
|
|
#include <asm/vgtod.h>
|
|
|
|
extern struct vdso_data *vdso_data;
|
|
|
|
/*
|
|
* Update the vDSO data page to keep in sync with kernel timekeeping.
|
|
*/
|
|
static __always_inline
|
|
struct vdso_data *__x86_get_k_vdso_data(void)
|
|
{
|
|
return vdso_data;
|
|
}
|
|
#define __arch_get_k_vdso_data __x86_get_k_vdso_data
|
|
|
|
static __always_inline
|
|
struct vdso_rng_data *__x86_get_k_vdso_rng_data(void)
|
|
{
|
|
return (void *)vdso_data + __VDSO_RND_DATA_OFFSET;
|
|
}
|
|
#define __arch_get_k_vdso_rng_data __x86_get_k_vdso_rng_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 */
|