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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_S390_ASCE_H
#define _ASM_S390_ASCE_H
#include <linux/thread_info.h>
#include <linux/irqflags.h>
#include <asm/lowcore.h>
#include <asm/ctlreg.h>
static inline bool enable_sacf_uaccess(void)
{
unsigned long flags;
if (test_thread_flag(TIF_ASCE_PRIMARY))
return true;
local_irq_save(flags);
local_ctl_load(1, &get_lowcore()->kernel_asce);
set_thread_flag(TIF_ASCE_PRIMARY);
local_irq_restore(flags);
return false;
}
static inline void disable_sacf_uaccess(bool previous)
{
unsigned long flags;
if (previous)
return;
local_irq_save(flags);
local_ctl_load(1, &get_lowcore()->user_asce);
clear_thread_flag(TIF_ASCE_PRIMARY);
local_irq_restore(flags);
}
#endif /* _ASM_S390_ASCE_H */
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