“62c4f0a2d5a188f73a94f2cb8ea0dba3e7cf0a7f”上不存在“arch/m32r/include/asm/cacheflush.h”
提交 ff7ebff4 编写于 作者: T Thomas Gleixner 提交者: Borislav Petkov

x86/pkru: Provide pkru_write_default()

Provide a simple and trivial helper which just writes the PKRU default
value without trying to fiddle with the task's xsave buffer.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NBorislav Petkov <bp@suse.de>
Reviewed-by: NBorislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210623121455.513729794@linutronix.de
上级 739e2eec
...@@ -60,4 +60,12 @@ static inline void write_pkru(u32 pkru) ...@@ -60,4 +60,12 @@ static inline void write_pkru(u32 pkru)
fpregs_unlock(); fpregs_unlock();
} }
static inline void pkru_write_default(void)
{
if (!cpu_feature_enabled(X86_FEATURE_OSPKE))
return;
wrpkru(pkru_get_init_value());
}
#endif #endif
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