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/linux-6.3-rc2/arch/x86/kernel/
A Dsev.c158 unsigned long old_ist, new_ist; in __sev_es_ist_enter() local
161 new_ist = old_ist = __this_cpu_read(cpu_tss_rw.x86_tss.ist[IST_INDEX_VC]); in __sev_es_ist_enter()
169 new_ist = regs->sp; in __sev_es_ist_enter()
175 new_ist -= sizeof(old_ist); in __sev_es_ist_enter()
176 *(unsigned long *)new_ist = old_ist; in __sev_es_ist_enter()
179 this_cpu_write(cpu_tss_rw.x86_tss.ist[IST_INDEX_VC], new_ist); in __sev_es_ist_enter()

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