1 /* SPDX-License-Identifier: GPL-2.0 */
7 #include <asm/processor-flags.h>
18 	asm volatile("mov %%cr0,%0" : "=r" (val));  in native_read_cr0()
25 	asm volatile("mov %%cr2,%0" : "=r" (val));  in native_read_cr2()
31 	asm volatile("mov %0,%%cr2": : "r" (val) : "memory");  in native_write_cr2()
37 	asm volatile("mov %%cr3,%0" : "=r" (val));  in __native_read_cr3()
43 	asm volatile("mov %0,%%cr3": : "r" (val) : "memory");  in native_write_cr3()
51 	 * This could fault if CR4 does not exist.  Non-existent CR4  in native_read_cr4()
55 	asm volatile("1: mov %%cr4, %0\n"  in native_read_cr4()
61 	asm volatile("mov %%cr4,%0" : "=r" (val));  in native_read_cr4()
78 	asm volatile(".byte 0x0f,0x01,0xee\n\t"  in rdpkru()
92 	asm volatile(".byte 0x0f,0x01,0xef\n\t"  in wrpkru()
110  * on the micro-architecture, WBINVD (and WBNOINVD below) may or may not affect
116 	asm volatile("wbinvd" : : : "memory");  in wbinvd()
125  * i.e. leave all/most cache lines in the hierarchy in non-modified state.
188 static __always_inline void clflush(volatile void *__p)  in clflush()
190 	asm volatile("clflush %0" : "+m" (*(volatile char __force *)__p));  in clflush()
193 static inline void clflushopt(volatile void *__p)  in clflushopt()
197 		       "+m" (*(volatile char __force *)__p));  in clflushopt()
200 static inline void clwb(volatile void *__p)  in clwb()
202 	volatile struct { char x[64]; } *p = __p;  in clwb()
204 	asm_inline volatile(ALTERNATIVE_2(  in clwb()
220 	return -EFAULT;  in write_user_shstk_64()
224 #define nop() asm volatile ("nop")
229 	asm volatile(".byte 0xf, 0x1, 0xe8" ::: "memory");  in serialize()
232 /* The dst parameter must be 64-bytes aligned */
249 	asm volatile(".byte 0x66, 0x0f, 0x38, 0xf8, 0x02"  in movdir64b()
260  * enqcmds - Enqueue a command in supervisor (CPL0) mode
261  * @dst: destination, in MMIO space (must be 512-bit aligned)
264  * The ENQCMDS instruction allows software to write a 512-bit command to
265  * a 512-bit-aligned special MMIO region that supports the instruction.
272  * returns 0 on success and -EAGAIN on failure.
289 	asm volatile(".byte 0xf3, 0x0f, 0x38, 0xf8, 0x02, 0x66, 0x90"  in enqcmds()
296 		return -EAGAIN;  in enqcmds()
307 	asm volatile(".byte 0xc4, 0xe2, 0x78, 0x49, 0xc0");  in tile_release()