forked from Minki/linux
6f52b16c5b
Many user space API headers are missing licensing information, which makes it hard for compliance tools to determine the correct license. By default are files without license information under the default license of the kernel, which is GPLV2. Marking them GPLV2 would exclude them from being included in non GPLV2 code, which is obviously not intended. The user space API headers fall under the syscall exception which is in the kernels COPYING file: NOTE! This copyright does *not* cover user programs that use kernel services by normal system calls - this is merely considered normal use of the kernel, and does *not* fall under the heading of "derived work". otherwise syscall usage would not be possible. Update the files which contain no license information with an SPDX license identifier. The chosen identifier is 'GPL-2.0 WITH Linux-syscall-note' which is the officially assigned identifier for the Linux syscall exception. SPDX license identifiers are a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. See the previous patch in this series for the methodology of how this patch was researched. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
79 lines
1.2 KiB
C
79 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _GUARDED_STORAGE_H
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#define _GUARDED_STORAGE_H
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#include <linux/types.h>
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struct gs_cb {
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__u64 reserved;
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__u64 gsd;
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__u64 gssm;
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__u64 gs_epl_a;
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};
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struct gs_epl {
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__u8 pad1;
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union {
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__u8 gs_eam;
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struct {
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__u8 : 6;
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__u8 e : 1;
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__u8 b : 1;
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};
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};
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union {
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__u8 gs_eci;
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struct {
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__u8 tx : 1;
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__u8 cx : 1;
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__u8 : 5;
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__u8 in : 1;
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};
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};
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union {
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__u8 gs_eai;
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struct {
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__u8 : 1;
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__u8 t : 1;
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__u8 as : 2;
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__u8 ar : 4;
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};
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};
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__u32 pad2;
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__u64 gs_eha;
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__u64 gs_eia;
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__u64 gs_eoa;
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__u64 gs_eir;
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__u64 gs_era;
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};
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#define GS_ENABLE 0
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#define GS_DISABLE 1
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#define GS_SET_BC_CB 2
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#define GS_CLEAR_BC_CB 3
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#define GS_BROADCAST 4
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static inline void load_gs_cb(struct gs_cb *gs_cb)
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{
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asm volatile(".insn rxy,0xe3000000004d,0,%0" : : "Q" (*gs_cb));
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}
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static inline void store_gs_cb(struct gs_cb *gs_cb)
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{
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asm volatile(".insn rxy,0xe30000000049,0,%0" : : "Q" (*gs_cb));
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}
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static inline void save_gs_cb(struct gs_cb *gs_cb)
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{
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if (gs_cb)
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store_gs_cb(gs_cb);
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}
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static inline void restore_gs_cb(struct gs_cb *gs_cb)
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{
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if (gs_cb)
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load_gs_cb(gs_cb);
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}
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#endif /* _GUARDED_STORAGE_H */
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