65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
/* 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(1b, %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(1b, %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(1b, %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 */
|