mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
synced 2026-04-18 03:23:53 -04:00
51d6ca373f
Extend the generic vDSO data storage with a page for the random state data. The random state data is stored in a dedicated page, as the existing storage page is only meant for time-related, time-namespace-aware data. This simplifies to access logic to not need to handle time namespaces anymore and also frees up more space in the time-related page. In case further generic vDSO data store is required it can be added to the random state page. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250204-vdso-store-rng-v3-6-13a4669dfc8c@linutronix.de
57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_GENERIC_VSYSCALL_H
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#define __ASM_GENERIC_VSYSCALL_H
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#ifndef __ASSEMBLY__
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#ifdef CONFIG_GENERIC_VDSO_DATA_STORE
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#ifndef __arch_get_vdso_u_time_data
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static __always_inline const struct vdso_time_data *__arch_get_vdso_u_time_data(void)
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{
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return vdso_u_time_data;
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}
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#endif
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#ifndef __arch_get_vdso_u_rng_data
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static __always_inline const struct vdso_rng_data *__arch_get_vdso_u_rng_data(void)
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{
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return &vdso_u_rng_data;
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}
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#endif
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#else /* !CONFIG_GENERIC_VDSO_DATA_STORE */
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#ifndef __arch_get_k_vdso_data
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static __always_inline struct vdso_data *__arch_get_k_vdso_data(void)
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{
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return NULL;
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}
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#endif /* __arch_get_k_vdso_data */
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#define vdso_k_time_data __arch_get_k_vdso_data()
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#define __arch_get_vdso_u_time_data __arch_get_vdso_data
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#ifndef __arch_get_vdso_u_rng_data
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#define __arch_get_vdso_u_rng_data() __arch_get_vdso_rng_data()
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#endif
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#define vdso_k_rng_data __arch_get_k_vdso_rng_data()
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#endif /* CONFIG_GENERIC_VDSO_DATA_STORE */
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#ifndef __arch_update_vsyscall
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static __always_inline void __arch_update_vsyscall(struct vdso_data *vdata)
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{
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}
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#endif /* __arch_update_vsyscall */
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#ifndef __arch_sync_vdso_data
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static __always_inline void __arch_sync_vdso_data(struct vdso_data *vdata)
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{
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}
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#endif /* __arch_sync_vdso_data */
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#endif /* !__ASSEMBLY__ */
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#endif /* __ASM_GENERIC_VSYSCALL_H */
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