FILE
fpu.h
File preview with syntax highlighting.
linux-6.19.14/arch/x86/kvm/fpu.h
1/* SPDX-License-Identifier: GPL-2.0 */ 2 3#ifndef __KVM_FPU_H_ 4#define __KVM_FPU_H_ 5 6#include <asm/fpu/api.h> 7 8typedef u32 __attribute__((vector_size(16))) sse128_t; 9#define __sse128_u union { sse128_t vec; u64 as_u64[2]; u32 as_u32[4]; } 10#define sse128_lo(x) ({ __sse128_u t; t.vec = x; t.as_u64[0]; }) 11#define sse128_hi(x) ({ __sse128_u t; t.vec = x; t.as_u64[1]; }) 12#define sse128_l0(x) ({ __sse128_u t; t.vec = x; t.as_u32[0]; }) 13#define sse128_l1(x) ({ __sse128_u t; t.vec = x; t.as_u32[1]; }) 14#define sse128_l2(x) ({ __sse128_u t; t.vec = x; t.as_u32[2]; }) 15#define sse128_l3(x) ({ __sse128_u t; t.vec = x; t.as_u32[3]; }) 16#define sse128(lo, hi) ({ __sse128_u t; t.as_u64[0] = lo; t.as_u64[1] = hi; t.vec; }) 17 18typedef u32 __attribute__((vector_size(32))) avx256_t; 19 20static inline void _kvm_read_avx_reg(int reg, avx256_t *data) 21{ 22 switch (reg) { 23 case 0: asm("vmovdqa %%ymm0, %0" : "=m"(*data)); break; 24 case 1: asm("vmovdqa %%ymm1, %0" : "=m"(*data)); break; 25 case 2: asm("vmovdqa %%ymm2, %0" : "=m"(*data)); break; 26 case 3: asm("vmovdqa %%ymm3, %0" : "=m"(*data)); break; 27 case 4: asm("vmovdqa %%ymm4, %0" : "=m"(*data)); break; 28 case 5: asm("vmovdqa %%ymm5, %0" : "=m"(*data)); break; 29 case 6: asm("vmovdqa %%ymm6, %0" : "=m"(*data)); break; 30 case 7: asm("vmovdqa %%ymm7, %0" : "=m"(*data)); break; 31#ifdef CONFIG_X86_64 32 case 8: asm("vmovdqa %%ymm8, %0" : "=m"(*data)); break; 33 case 9: asm("vmovdqa %%ymm9, %0" : "=m"(*data)); break; 34 case 10: asm("vmovdqa %%ymm10, %0" : "=m"(*data)); break; 35 case 11: asm("vmovdqa %%ymm11, %0" : "=m"(*data)); break; 36 case 12: asm("vmovdqa %%ymm12, %0" : "=m"(*data)); break; 37 case 13: asm("vmovdqa %%ymm13, %0" : "=m"(*data)); break; 38 case 14: asm("vmovdqa %%ymm14, %0" : "=m"(*data)); break; 39 case 15: asm("vmovdqa %%ymm15, %0" : "=m"(*data)); break; 40#endif 41 default: BUG(); 42 } 43} 44 45static inline void _kvm_write_avx_reg(int reg, const avx256_t *data) 46{ 47 switch (reg) { 48 case 0: asm("vmovdqa %0, %%ymm0" : : "m"(*data)); break; 49 case 1: asm("vmovdqa %0, %%ymm1" : : "m"(*data)); break; 50 case 2: asm("vmovdqa %0, %%ymm2" : : "m"(*data)); break; 51 case 3: asm("vmovdqa %0, %%ymm3" : : "m"(*data)); break; 52 case 4: asm("vmovdqa %0, %%ymm4" : : "m"(*data)); break; 53 case 5: asm("vmovdqa %0, %%ymm5" : : "m"(*data)); break; 54 case 6: asm("vmovdqa %0, %%ymm6" : : "m"(*data)); break; 55 case 7: asm("vmovdqa %0, %%ymm7" : : "m"(*data)); break; 56#ifdef CONFIG_X86_64 57 case 8: asm("vmovdqa %0, %%ymm8" : : "m"(*data)); break; 58 case 9: asm("vmovdqa %0, %%ymm9" : : "m"(*data)); break; 59 case 10: asm("vmovdqa %0, %%ymm10" : : "m"(*data)); break; 60 case 11: asm("vmovdqa %0, %%ymm11" : : "m"(*data)); break; 61 case 12: asm("vmovdqa %0, %%ymm12" : : "m"(*data)); break; 62 case 13: asm("vmovdqa %0, %%ymm13" : : "m"(*data)); break; 63 case 14: asm("vmovdqa %0, %%ymm14" : : "m"(*data)); break; 64 case 15: asm("vmovdqa %0, %%ymm15" : : "m"(*data)); break; 65#endif 66 default: BUG(); 67 } 68} 69 70static inline void _kvm_read_sse_reg(int reg, sse128_t *data) 71{ 72 switch (reg) { 73 case 0: asm("movdqa %%xmm0, %0" : "=m"(*data)); break; 74 case 1: asm("movdqa %%xmm1, %0" : "=m"(*data)); break; 75 case 2: asm("movdqa %%xmm2, %0" : "=m"(*data)); break; 76 case 3: asm("movdqa %%xmm3, %0" : "=m"(*data)); break; 77 case 4: asm("movdqa %%xmm4, %0" : "=m"(*data)); break; 78 case 5: asm("movdqa %%xmm5, %0" : "=m"(*data)); break; 79 case 6: asm("movdqa %%xmm6, %0" : "=m"(*data)); break; 80 case 7: asm("movdqa %%xmm7, %0" : "=m"(*data)); break; 81#ifdef CONFIG_X86_64 82 case 8: asm("movdqa %%xmm8, %0" : "=m"(*data)); break; 83 case 9: asm("movdqa %%xmm9, %0" : "=m"(*data)); break; 84 case 10: asm("movdqa %%xmm10, %0" : "=m"(*data)); break; 85 case 11: asm("movdqa %%xmm11, %0" : "=m"(*data)); break; 86 case 12: asm("movdqa %%xmm12, %0" : "=m"(*data)); break; 87 case 13: asm("movdqa %%xmm13, %0" : "=m"(*data)); break; 88 case 14: asm("movdqa %%xmm14, %0" : "=m"(*data)); break; 89 case 15: asm("movdqa %%xmm15, %0" : "=m"(*data)); break; 90#endif 91 default: BUG(); 92 } 93} 94 95static inline void _kvm_write_sse_reg(int reg, const sse128_t *data) 96{ 97 switch (reg) { 98 case 0: asm("movdqa %0, %%xmm0" : : "m"(*data)); break; 99 case 1: asm("movdqa %0, %%xmm1" : : "m"(*data)); break; 100 case 2: asm("movdqa %0, %%xmm2" : : "m"(*data)); break; 101 case 3: asm("movdqa %0, %%xmm3" : : "m"(*data)); break; 102 case 4: asm("movdqa %0, %%xmm4" : : "m"(*data)); break; 103 case 5: asm("movdqa %0, %%xmm5" : : "m"(*data)); break; 104 case 6: asm("movdqa %0, %%xmm6" : : "m"(*data)); break; 105 case 7: asm("movdqa %0, %%xmm7" : : "m"(*data)); break; 106#ifdef CONFIG_X86_64 107 case 8: asm("movdqa %0, %%xmm8" : : "m"(*data)); break; 108 case 9: asm("movdqa %0, %%xmm9" : : "m"(*data)); break; 109 case 10: asm("movdqa %0, %%xmm10" : : "m"(*data)); break; 110 case 11: asm("movdqa %0, %%xmm11" : : "m"(*data)); break; 111 case 12: asm("movdqa %0, %%xmm12" : : "m"(*data)); break; 112 case 13: asm("movdqa %0, %%xmm13" : : "m"(*data)); break; 113 case 14: asm("movdqa %0, %%xmm14" : : "m"(*data)); break; 114 case 15: asm("movdqa %0, %%xmm15" : : "m"(*data)); break; 115#endif 116 default: BUG(); 117 } 118} 119 120static inline void _kvm_read_mmx_reg(int reg, u64 *data) 121{ 122 switch (reg) { 123 case 0: asm("movq %%mm0, %0" : "=m"(*data)); break; 124 case 1: asm("movq %%mm1, %0" : "=m"(*data)); break; 125 case 2: asm("movq %%mm2, %0" : "=m"(*data)); break; 126 case 3: asm("movq %%mm3, %0" : "=m"(*data)); break; 127 case 4: asm("movq %%mm4, %0" : "=m"(*data)); break; 128 case 5: asm("movq %%mm5, %0" : "=m"(*data)); break; 129 case 6: asm("movq %%mm6, %0" : "=m"(*data)); break; 130 case 7: asm("movq %%mm7, %0" : "=m"(*data)); break; 131 default: BUG(); 132 } 133} 134 135static inline void _kvm_write_mmx_reg(int reg, const u64 *data) 136{ 137 switch (reg) { 138 case 0: asm("movq %0, %%mm0" : : "m"(*data)); break; 139 case 1: asm("movq %0, %%mm1" : : "m"(*data)); break; 140 case 2: asm("movq %0, %%mm2" : : "m"(*data)); break; 141 case 3: asm("movq %0, %%mm3" : : "m"(*data)); break; 142 case 4: asm("movq %0, %%mm4" : : "m"(*data)); break; 143 case 5: asm("movq %0, %%mm5" : : "m"(*data)); break; 144 case 6: asm("movq %0, %%mm6" : : "m"(*data)); break; 145 case 7: asm("movq %0, %%mm7" : : "m"(*data)); break; 146 default: BUG(); 147 } 148} 149 150static inline void kvm_fpu_get(void) 151{ 152 fpregs_lock(); 153 154 fpregs_assert_state_consistent(); 155 if (test_thread_flag(TIF_NEED_FPU_LOAD)) 156 switch_fpu_return(); 157} 158 159static inline void kvm_fpu_put(void) 160{ 161 fpregs_unlock(); 162} 163 164static inline void kvm_read_avx_reg(int reg, avx256_t *data) 165{ 166 kvm_fpu_get(); 167 _kvm_read_avx_reg(reg, data); 168 kvm_fpu_put(); 169} 170 171static inline void kvm_write_avx_reg(int reg, const avx256_t *data) 172{ 173 kvm_fpu_get(); 174 _kvm_write_avx_reg(reg, data); 175 kvm_fpu_put(); 176} 177 178static inline void kvm_read_sse_reg(int reg, sse128_t *data) 179{ 180 kvm_fpu_get(); 181 _kvm_read_sse_reg(reg, data); 182 kvm_fpu_put(); 183} 184 185static inline void kvm_write_sse_reg(int reg, const sse128_t *data) 186{ 187 kvm_fpu_get(); 188 _kvm_write_sse_reg(reg, data); 189 kvm_fpu_put(); 190} 191 192static inline void kvm_read_mmx_reg(int reg, u64 *data) 193{ 194 kvm_fpu_get(); 195 _kvm_read_mmx_reg(reg, data); 196 kvm_fpu_put(); 197} 198 199static inline void kvm_write_mmx_reg(int reg, const u64 *data) 200{ 201 kvm_fpu_get(); 202 _kvm_write_mmx_reg(reg, data); 203 kvm_fpu_put(); 204} 205 206#endif
~/
Read-only file preview.