#include "kvm_cache_regs.h"
#include "x86.h"
+#include <asm/asm.h>
#include <asm/cpu.h>
#include <asm/io.h>
#include <asm/desc.h>
u64 rsvd : 48;
u64 gva;
} operand = { vpid, 0, gva };
+ bool error;
- asm volatile (__ex(ASM_VMX_INVVPID)
- /* CF==1 or ZF==1 --> rc = -1 */
- "; ja 1f ; ud2 ; 1:"
- : : "a"(&operand), "c"(ext) : "cc", "memory");
+ asm volatile (__ex(ASM_VMX_INVVPID) CC_SET(na)
+ : CC_OUT(na) (error) : "a"(&operand), "c"(ext)
+ : "memory");
+ BUG_ON(error);
}
static inline void __invept(int ext, u64 eptp, gpa_t gpa)
struct {
u64 eptp, gpa;
} operand = {eptp, gpa};
+ bool error;
- asm volatile (__ex(ASM_VMX_INVEPT)
- /* CF==1 or ZF==1 --> rc = -1 */
- "; ja 1f ; ud2 ; 1:\n"
- : : "a" (&operand), "c" (ext) : "cc", "memory");
+ asm volatile (__ex(ASM_VMX_INVEPT) CC_SET(na)
+ : CC_OUT(na) (error) : "a" (&operand), "c" (ext)
+ : "memory");
+ BUG_ON(error);
}
static struct shared_msr_entry *find_msr_entry(struct vcpu_vmx *vmx, u32 msr)
static void vmcs_clear(struct vmcs *vmcs)
{
u64 phys_addr = __pa(vmcs);
- u8 error;
+ bool error;
- asm volatile (__ex(ASM_VMX_VMCLEAR_RAX) "; setna %0"
- : "=qm"(error) : "a"(&phys_addr), "m"(phys_addr)
- : "cc", "memory");
- if (error)
+ asm volatile (__ex(ASM_VMX_VMCLEAR_RAX) CC_SET(na)
+ : CC_OUT(na) (error) : "a"(&phys_addr), "m"(phys_addr)
+ : "memory");
+ if (unlikely(error))
printk(KERN_ERR "kvm: vmclear fail: %p/%llx\n",
vmcs, phys_addr);
}
static void vmcs_load(struct vmcs *vmcs)
{
u64 phys_addr = __pa(vmcs);
- u8 error;
+ bool error;
if (static_branch_unlikely(&enable_evmcs))
return evmcs_load(phys_addr);
- asm volatile (__ex(ASM_VMX_VMPTRLD_RAX) "; setna %0"
- : "=qm"(error) : "a"(&phys_addr), "m"(phys_addr)
- : "cc", "memory");
- if (error)
+ asm volatile (__ex(ASM_VMX_VMPTRLD_RAX) CC_SET(na)
+ : CC_OUT(na) (error) : "a"(&phys_addr), "m"(phys_addr)
+ : "memory");
+ if (unlikely(error))
printk(KERN_ERR "kvm: vmptrld %p/%llx failed\n",
vmcs, phys_addr);
}
static __always_inline void __vmcs_writel(unsigned long field, unsigned long value)
{
- u8 error;
+ bool error;
- asm volatile (__ex(ASM_VMX_VMWRITE_RAX_RDX) "; setna %0"
- : "=q"(error) : "a"(value), "d"(field) : "cc");
+ asm volatile (__ex(ASM_VMX_VMWRITE_RAX_RDX) CC_SET(na)
+ : CC_OUT(na) (error) : "a"(value), "d"(field));
if (unlikely(error))
vmwrite_error(field, value);
}