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Diffstat (limited to 'arch/x86/kvm/vmx/ops.h')
-rw-r--r--arch/x86/kvm/vmx/ops.h316
1 files changed, 0 insertions, 316 deletions
diff --git a/arch/x86/kvm/vmx/ops.h b/arch/x86/kvm/vmx/ops.h
deleted file mode 100644
index 5f1ac002b4b6..000000000000
--- a/arch/x86/kvm/vmx/ops.h
+++ /dev/null
@@ -1,316 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __KVM_X86_VMX_INSN_H
-#define __KVM_X86_VMX_INSN_H
-
-#include <linux/nospec.h>
-
-#include <asm/kvm_host.h>
-#include <asm/vmx.h>
-
-#include "evmcs.h"
-#include "vmcs.h"
-
-#define __ex(x) __kvm_handle_fault_on_reboot(x)
-
-asmlinkage void vmread_error(unsigned long field, bool fault);
-__attribute__((regparm(0))) void vmread_error_trampoline(unsigned long field,
- bool fault);
-void vmwrite_error(unsigned long field, unsigned long value);
-void vmclear_error(struct vmcs *vmcs, u64 phys_addr);
-void vmptrld_error(struct vmcs *vmcs, u64 phys_addr);
-void invvpid_error(unsigned long ext, u16 vpid, gva_t gva);
-void invept_error(unsigned long ext, u64 eptp, gpa_t gpa);
-
-static __always_inline void vmcs_check16(unsigned long field)
-{
- BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2000,
- "16-bit accessor invalid for 64-bit field");
- BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2001,
- "16-bit accessor invalid for 64-bit high field");
- BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x4000,
- "16-bit accessor invalid for 32-bit high field");
- BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x6000,
- "16-bit accessor invalid for natural width field");
-}
-
-static __always_inline void vmcs_check32(unsigned long field)
-{
- BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0,
- "32-bit accessor invalid for 16-bit field");
- BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x6000,
- "32-bit accessor invalid for natural width field");
-}
-
-static __always_inline void vmcs_check64(unsigned long field)
-{
- BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0,
- "64-bit accessor invalid for 16-bit field");
- BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2001,
- "64-bit accessor invalid for 64-bit high field");
- BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x4000,
- "64-bit accessor invalid for 32-bit field");
- BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x6000,
- "64-bit accessor invalid for natural width field");
-}
-
-static __always_inline void vmcs_checkl(unsigned long field)
-{
- BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0,
- "Natural width accessor invalid for 16-bit field");
- BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2000,
- "Natural width accessor invalid for 64-bit field");
- BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2001,
- "Natural width accessor invalid for 64-bit high field");
- BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x4000,
- "Natural width accessor invalid for 32-bit field");
-}
-
-static __always_inline unsigned long __vmcs_readl(unsigned long field)
-{
- unsigned long value;
-
- asm volatile("1: vmread %2, %1\n\t"
- ".byte 0x3e\n\t" /* branch taken hint */
- "ja 3f\n\t"
-
- /*
- * VMREAD failed. Push '0' for @fault, push the failing
- * @field, and bounce through the trampoline to preserve
- * volatile registers.
- */
- "push $0\n\t"
- "push %2\n\t"
- "2:call vmread_error_trampoline\n\t"
-
- /*
- * Unwind the stack. Note, the trampoline zeros out the
- * memory for @fault so that the result is '0' on error.
- */
- "pop %2\n\t"
- "pop %1\n\t"
- "3:\n\t"
-
- /* VMREAD faulted. As above, except push '1' for @fault. */
- ".pushsection .fixup, \"ax\"\n\t"
- "4: push $1\n\t"
- "push %2\n\t"
- "jmp 2b\n\t"
- ".popsection\n\t"
- _ASM_EXTABLE(1b, 4b)
- : ASM_CALL_CONSTRAINT, "=r"(value) : "r"(field) : "cc");
- return value;
-}
-
-static __always_inline u16 vmcs_read16(unsigned long field)
-{
- vmcs_check16(field);
- if (static_branch_unlikely(&enable_evmcs))
- return evmcs_read16(field);
- return __vmcs_readl(field);
-}
-
-static __always_inline u32 vmcs_read32(unsigned long field)
-{
- vmcs_check32(field);
- if (static_branch_unlikely(&enable_evmcs))
- return evmcs_read32(field);
- return __vmcs_readl(field);
-}
-
-static __always_inline u64 vmcs_read64(unsigned long field)
-{
- vmcs_check64(field);
- if (static_branch_unlikely(&enable_evmcs))
- return evmcs_read64(field);
-#ifdef CONFIG_X86_64
- return __vmcs_readl(field);
-#else
- return __vmcs_readl(field) | ((u64)__vmcs_readl(field+1) << 32);
-#endif
-}
-
-static __always_inline unsigned long vmcs_readl(unsigned long field)
-{
- vmcs_checkl(field);
- if (static_branch_unlikely(&enable_evmcs))
- return evmcs_read64(field);
- return __vmcs_readl(field);
-}
-
-#define vmx_asm1(insn, op1, error_args...) \
-do { \
- asm_volatile_goto("1: " __stringify(insn) " %0\n\t" \
- ".byte 0x2e\n\t" /* branch not taken hint */ \
- "jna %l[error]\n\t" \
- _ASM_EXTABLE(1b, %l[fault]) \
- : : op1 : "cc" : error, fault); \
- return; \
-error: \
- insn##_error(error_args); \
- return; \
-fault: \
- kvm_spurious_fault(); \
-} while (0)
-
-#define vmx_asm2(insn, op1, op2, error_args...) \
-do { \
- asm_volatile_goto("1: " __stringify(insn) " %1, %0\n\t" \
- ".byte 0x2e\n\t" /* branch not taken hint */ \
- "jna %l[error]\n\t" \
- _ASM_EXTABLE(1b, %l[fault]) \
- : : op1, op2 : "cc" : error, fault); \
- return; \
-error: \
- insn##_error(error_args); \
- return; \
-fault: \
- kvm_spurious_fault(); \
-} while (0)
-
-static __always_inline void __vmcs_writel(unsigned long field, unsigned long value)
-{
- vmx_asm2(vmwrite, "r"(field), "rm"(value), field, value);
-}
-
-static __always_inline void vmcs_write16(unsigned long field, u16 value)
-{
- vmcs_check16(field);
- if (static_branch_unlikely(&enable_evmcs))
- return evmcs_write16(field, value);
-
- __vmcs_writel(field, value);
-}
-
-static __always_inline void vmcs_write32(unsigned long field, u32 value)
-{
- vmcs_check32(field);
- if (static_branch_unlikely(&enable_evmcs))
- return evmcs_write32(field, value);
-
- __vmcs_writel(field, value);
-}
-
-static __always_inline void vmcs_write64(unsigned long field, u64 value)
-{
- vmcs_check64(field);
- if (static_branch_unlikely(&enable_evmcs))
- return evmcs_write64(field, value);
-
- __vmcs_writel(field, value);
-#ifndef CONFIG_X86_64
- __vmcs_writel(field+1, value >> 32);
-#endif
-}
-
-static __always_inline void vmcs_writel(unsigned long field, unsigned long value)
-{
- vmcs_checkl(field);
- if (static_branch_unlikely(&enable_evmcs))
- return evmcs_write64(field, value);
-
- __vmcs_writel(field, value);
-}
-
-static __always_inline void vmcs_clear_bits(unsigned long field, u32 mask)
-{
- BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x2000,
- "vmcs_clear_bits does not support 64-bit fields");
- if (static_branch_unlikely(&enable_evmcs))
- return evmcs_write32(field, evmcs_read32(field) & ~mask);
-
- __vmcs_writel(field, __vmcs_readl(field) & ~mask);
-}
-
-static __always_inline void vmcs_set_bits(unsigned long field, u32 mask)
-{
- BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x2000,
- "vmcs_set_bits does not support 64-bit fields");
- if (static_branch_unlikely(&enable_evmcs))
- return evmcs_write32(field, evmcs_read32(field) | mask);
-
- __vmcs_writel(field, __vmcs_readl(field) | mask);
-}
-
-static inline void vmcs_clear(struct vmcs *vmcs)
-{
- u64 phys_addr = __pa(vmcs);
-
- vmx_asm1(vmclear, "m"(phys_addr), vmcs, phys_addr);
-}
-
-static inline void vmcs_load(struct vmcs *vmcs)
-{
- u64 phys_addr = __pa(vmcs);
-
- if (static_branch_unlikely(&enable_evmcs))
- return evmcs_load(phys_addr);
-
- vmx_asm1(vmptrld, "m"(phys_addr), vmcs, phys_addr);
-}
-
-static inline void __invvpid(unsigned long ext, u16 vpid, gva_t gva)
-{
- struct {
- u64 vpid : 16;
- u64 rsvd : 48;
- u64 gva;
- } operand = { vpid, 0, gva };
-
- vmx_asm2(invvpid, "r"(ext), "m"(operand), ext, vpid, gva);
-}
-
-static inline void __invept(unsigned long ext, u64 eptp, gpa_t gpa)
-{
- struct {
- u64 eptp, gpa;
- } operand = {eptp, gpa};
-
- vmx_asm2(invept, "r"(ext), "m"(operand), ext, eptp, gpa);
-}
-
-static inline void vpid_sync_vcpu_single(int vpid)
-{
- if (vpid == 0)
- return;
-
- __invvpid(VMX_VPID_EXTENT_SINGLE_CONTEXT, vpid, 0);
-}
-
-static inline void vpid_sync_vcpu_global(void)
-{
- __invvpid(VMX_VPID_EXTENT_ALL_CONTEXT, 0, 0);
-}
-
-static inline void vpid_sync_context(int vpid)
-{
- if (cpu_has_vmx_invvpid_single())
- vpid_sync_vcpu_single(vpid);
- else if (vpid != 0)
- vpid_sync_vcpu_global();
-}
-
-static inline void vpid_sync_vcpu_addr(int vpid, gva_t addr)
-{
- if (vpid == 0)
- return;
-
- if (cpu_has_vmx_invvpid_individual_addr())
- __invvpid(VMX_VPID_EXTENT_INDIVIDUAL_ADDR, vpid, addr);
- else
- vpid_sync_context(vpid);
-}
-
-static inline void ept_sync_global(void)
-{
- __invept(VMX_EPT_EXTENT_GLOBAL, 0, 0);
-}
-
-static inline void ept_sync_context(u64 eptp)
-{
- if (cpu_has_vmx_invept_context())
- __invept(VMX_EPT_EXTENT_CONTEXT, eptp, 0);
- else
- ept_sync_global();
-}
-
-#endif /* __KVM_X86_VMX_INSN_H */
generated by cgit (git 2.34.1) at 2025-12-26 01:09:46 +0000