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69 lines
1.5 KiB
69 lines
1.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __KVM_X86_SVM_OPS_H |
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#define __KVM_X86_SVM_OPS_H |
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#include <linux/compiler_types.h> |
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#include <asm/kvm_host.h> |
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#define svm_asm(insn, clobber...) \ |
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do { \ |
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asm_volatile_goto("1: " __stringify(insn) "\n\t" \ |
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_ASM_EXTABLE(1b, %l[fault]) \ |
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::: clobber : fault); \ |
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return; \ |
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fault: \ |
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kvm_spurious_fault(); \ |
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} while (0) |
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#define svm_asm1(insn, op1, clobber...) \ |
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do { \ |
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asm_volatile_goto("1: " __stringify(insn) " %0\n\t" \ |
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_ASM_EXTABLE(1b, %l[fault]) \ |
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:: op1 : clobber : fault); \ |
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return; \ |
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fault: \ |
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kvm_spurious_fault(); \ |
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} while (0) |
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#define svm_asm2(insn, op1, op2, clobber...) \ |
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do { \ |
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asm_volatile_goto("1: " __stringify(insn) " %1, %0\n\t" \ |
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_ASM_EXTABLE(1b, %l[fault]) \ |
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:: op1, op2 : clobber : fault); \ |
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return; \ |
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fault: \ |
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kvm_spurious_fault(); \ |
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} while (0) |
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static inline void clgi(void) |
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{ |
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svm_asm(clgi); |
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} |
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static inline void stgi(void) |
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{ |
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svm_asm(stgi); |
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} |
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static inline void invlpga(unsigned long addr, u32 asid) |
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{ |
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svm_asm2(invlpga, "c"(asid), "a"(addr)); |
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} |
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/* |
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* Despite being a physical address, the portion of rAX that is consumed by |
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* VMSAVE, VMLOAD, etc... is still controlled by the effective address size, |
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* hence 'unsigned long' instead of 'hpa_t'. |
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*/ |
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static inline void vmsave(unsigned long pa) |
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{ |
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svm_asm1(vmsave, "a" (pa), "memory"); |
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} |
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static inline void vmload(unsigned long pa) |
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{ |
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svm_asm1(vmload, "a" (pa), "memory"); |
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} |
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#endif /* __KVM_X86_SVM_OPS_H */
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