/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __KVM_X86_SVM_OPS_H
#define __KVM_X86_SVM_OPS_H
#include <linux/compiler_types.h>
#include "x86.h"
#define svm_asm(insn, clobber...) \
do { \
asm goto ("1: " __stringify(insn) "\n\t" \
_ASM_EXTABLE(1 b, %l[fault]) \
::: clobber : fault); \
return ; \
fault: \
kvm_spurious_fault(); \
} while (0 )
#define svm_asm1(insn, op1, clobber...) \
do { \
asm goto ("1: " __stringify(insn) " %0\n\t" \
_ASM_EXTABLE(1 b, %l[fault]) \
:: op1 : clobber : fault); \
return ; \
fault: \
kvm_spurious_fault(); \
} while (0 )
#define svm_asm2(insn, op1, op2, clobber...) \
do { \
asm goto ("1: " __stringify(insn) " %1, %0\n\t" \
_ASM_EXTABLE(1 b, %l[fault]) \
:: op1, op2 : clobber : fault); \
return ; \
fault: \
kvm_spurious_fault(); \
} while (0 )
static inline void clgi(void )
{
svm_asm(clgi);
}
static inline void stgi(void )
{
svm_asm(stgi);
}
static inline void invlpga(unsigned long addr, u32 asid)
{
svm_asm2(invlpga, "c" (asid), "a" (addr));
}
/*
* Despite being a physical address , the portion of rAX that is consumed by
* VMSAVE , VMLOAD , etc . . . is still controlled by the effective address size ,
* hence ' unsigned long ' instead of ' hpa_t ' .
*/
static __always_inline void vmsave(unsigned long pa)
{
svm_asm1(vmsave, "a" (pa), "memory" );
}
#endif /* __KVM_X86_SVM_OPS_H */
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(vorverarbeitet am 2026-10-02)
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