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x86: Restrict KVM-induced symbol exports to KVM modules where obvious/possible

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Extend KVM's export macro framework to provide EXPORT_SYMBOL_FOR_KVM(),
and use the helper macro to export symbols for KVM throughout x86 if and
only if KVM will build one or more modules, and only for those modules.

To avoid unnecessary exports when CONFIG_KVM=m but kvm.ko will not be
built (because no vendor modules are selected), let arch code #define
EXPORT_SYMBOL_FOR_KVM to suppress/override the exports.

Note, the set of symbols to restrict to KVM was generated by manual search
and audit; any "misses" are due to human error, not some grand plan.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Kai Huang <kai.huang@intel.com>
Tested-by: Kai Huang <kai.huang@intel.com>
Link: https://patch.msgid.link/20251112173944.1380633-5-seanjc%40google.com
This commit is contained in:
Sean Christopherson
2025-11-12 09:39:44 -08:00
committed by Dave Hansen
parent e6f2d5866c
commit 6276c67f2b
32 changed files with 144 additions and 104 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
arch/x86/entry/entry.S
View File

@@ -4,6 +4,7 @@
*/
#include <linux/export.h>
#include <linux/kvm_types.h>
#include <linux/linkage.h>
#include <linux/objtool.h>
#include <asm/msr-index.h>
@@ -29,8 +30,7 @@ SYM_FUNC_START(write_ibpb)
FILL_RETURN_BUFFER %rax, RSB_CLEAR_LOOPS, X86_BUG_IBPB_NO_RET
RET
SYM_FUNC_END(write_ibpb)
/* For KVM */
EXPORT_SYMBOL_GPL(write_ibpb);
EXPORT_SYMBOL_FOR_KVM(write_ibpb);
.popsection
@@ -48,8 +48,7 @@ SYM_CODE_START_NOALIGN(x86_verw_sel)
.word __KERNEL_DS
.align L1_CACHE_BYTES, 0xcc
SYM_CODE_END(x86_verw_sel);
/* For KVM */
EXPORT_SYMBOL_GPL(x86_verw_sel);
EXPORT_SYMBOL_FOR_KVM(x86_verw_sel);
.popsection

3
arch/x86/entry/entry_64.S
View File

@@ -19,6 +19,7 @@
* - idtentry: Define exception entry points.
*/
#include <linux/export.h>
#include <linux/kvm_types.h>
#include <linux/linkage.h>
#include <asm/segment.h>
#include <asm/cache.h>
@@ -1566,5 +1567,5 @@ SYM_FUNC_START(clear_bhb_loop)
pop %rbp
RET
SYM_FUNC_END(clear_bhb_loop)
EXPORT_SYMBOL_GPL(clear_bhb_loop)
EXPORT_SYMBOL_FOR_KVM(clear_bhb_loop)
STACK_FRAME_NON_STANDARD(clear_bhb_loop)

3
arch/x86/entry/entry_64_fred.S
View File

@@ -4,6 +4,7 @@
*/
#include <linux/export.h>
#include <linux/kvm_types.h>
#include <asm/asm.h>
#include <asm/fred.h>
@@ -146,5 +147,5 @@ SYM_FUNC_START(asm_fred_entry_from_kvm)
RET
SYM_FUNC_END(asm_fred_entry_from_kvm)
EXPORT_SYMBOL_GPL(asm_fred_entry_from_kvm);
EXPORT_SYMBOL_FOR_KVM(asm_fred_entry_from_kvm);
#endif

5
arch/x86/events/amd/core.c
View File

@@ -2,6 +2,7 @@
#include <linux/perf_event.h>
#include <linux/jump_label.h>
#include <linux/export.h>
#include <linux/kvm_types.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/slab.h>
@@ -1569,7 +1570,7 @@ void amd_pmu_enable_virt(void)
/* Reload all events */
amd_pmu_reload_virt();
}
EXPORT_SYMBOL_GPL(amd_pmu_enable_virt);
EXPORT_SYMBOL_FOR_KVM(amd_pmu_enable_virt);
void amd_pmu_disable_virt(void)
{
@@ -1586,4 +1587,4 @@ void amd_pmu_disable_virt(void)
/* Reload all events */
amd_pmu_reload_virt();
}
EXPORT_SYMBOL_GPL(amd_pmu_disable_virt);
EXPORT_SYMBOL_FOR_KVM(amd_pmu_disable_virt);

7
arch/x86/events/core.c
View File

@@ -20,6 +20,7 @@
#include <linux/export.h>
#include <linux/init.h>
#include <linux/kdebug.h>
#include <linux/kvm_types.h>
#include <linux/sched/mm.h>
#include <linux/sched/clock.h>
#include <linux/uaccess.h>
@@ -714,7 +715,7 @@ struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr, void *data)
{
return static_call(x86_pmu_guest_get_msrs)(nr, data);
}
EXPORT_SYMBOL_GPL(perf_guest_get_msrs);
EXPORT_SYMBOL_FOR_KVM(perf_guest_get_msrs);
/*
* There may be PMI landing after enabled=0. The PMI hitting could be before or
@@ -3106,7 +3107,7 @@ void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap)
cap->events_mask_len = x86_pmu.events_mask_len;
cap->pebs_ept = x86_pmu.pebs_ept;
}
EXPORT_SYMBOL_GPL(perf_get_x86_pmu_capability);
EXPORT_SYMBOL_FOR_KVM(perf_get_x86_pmu_capability);
u64 perf_get_hw_event_config(int hw_event)
{
@@ -3117,4 +3118,4 @@ u64 perf_get_hw_event_config(int hw_event)
return 0;
}
EXPORT_SYMBOL_GPL(perf_get_hw_event_config);
EXPORT_SYMBOL_FOR_KVM(perf_get_hw_event_config);

3
arch/x86/events/intel/lbr.c
View File

@@ -1,4 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/kvm_types.h>
#include <linux/perf_event.h>
#include <linux/types.h>
@@ -1705,7 +1706,7 @@ void x86_perf_get_lbr(struct x86_pmu_lbr *lbr)
lbr->info = x86_pmu.lbr_info;
lbr->has_callstack = x86_pmu_has_lbr_callstack();
}
EXPORT_SYMBOL_GPL(x86_perf_get_lbr);
EXPORT_SYMBOL_FOR_KVM(x86_perf_get_lbr);
struct event_constraint vlbr_constraint =
__EVENT_CONSTRAINT(INTEL_FIXED_VLBR_EVENT, (1ULL << INTEL_PMC_IDX_FIXED_VLBR),

7
arch/x86/events/intel/pt.c
View File

@@ -17,6 +17,7 @@
#include <linux/limits.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/kvm_types.h>
#include <asm/cpuid/api.h>
#include <asm/perf_event.h>
@@ -82,13 +83,13 @@ u32 intel_pt_validate_cap(u32 *caps, enum pt_capabilities capability)
return (c & cd->mask) >> shift;
}
EXPORT_SYMBOL_GPL(intel_pt_validate_cap);
EXPORT_SYMBOL_FOR_KVM(intel_pt_validate_cap);
u32 intel_pt_validate_hw_cap(enum pt_capabilities cap)
{
return intel_pt_validate_cap(pt_pmu.caps, cap);
}
EXPORT_SYMBOL_GPL(intel_pt_validate_hw_cap);
EXPORT_SYMBOL_FOR_KVM(intel_pt_validate_hw_cap);
static ssize_t pt_cap_show(struct device *cdev,
struct device_attribute *attr,
@@ -1590,7 +1591,7 @@ void intel_pt_handle_vmx(int on)
local_irq_restore(flags);
}
EXPORT_SYMBOL_GPL(intel_pt_handle_vmx);
EXPORT_SYMBOL_FOR_KVM(intel_pt_handle_vmx);
/*
* PMU callbacks

5
arch/x86/include/asm/kvm_types.h
View File

@@ -10,6 +10,11 @@
#define KVM_SUB_MODULES kvm-intel
#else
#undef KVM_SUB_MODULES
/*
* Don't export symbols for KVM without vendor modules, as kvm.ko is built iff
* at least one vendor module is enabled.
*/
#define EXPORT_SYMBOL_FOR_KVM(symbol)
#endif
#define KVM_ARCH_NR_OBJS_PER_MEMORY_CACHE 40

3
arch/x86/kernel/apic/apic.c
View File

@@ -36,6 +36,7 @@
#include <linux/dmi.h>
#include <linux/smp.h>
#include <linux/mm.h>
#include <linux/kvm_types.h>
#include <xen/xen.h>
@@ -2316,7 +2317,7 @@ u32 x86_msi_msg_get_destid(struct msi_msg *msg, bool extid)
dest |= msg->arch_addr_hi.destid_8_31 << 8;
return dest;
}
EXPORT_SYMBOL_GPL(x86_msi_msg_get_destid);
EXPORT_SYMBOL_FOR_KVM(x86_msi_msg_get_destid);
static void __init apic_bsp_up_setup(void)
{

3
arch/x86/kernel/apic/apic_common.c
View File

@@ -4,6 +4,7 @@
* SPDX-License-Identifier: GPL-2.0
*/
#include <linux/irq.h>
#include <linux/kvm_types.h>
#include <asm/apic.h>
#include "local.h"
@@ -25,7 +26,7 @@ u32 default_cpu_present_to_apicid(int mps_cpu)
else
return BAD_APICID;
}
EXPORT_SYMBOL_GPL(default_cpu_present_to_apicid);
EXPORT_SYMBOL_FOR_KVM(default_cpu_present_to_apicid);
/*
* Set up the logical destination ID when the APIC operates in logical

4
arch/x86/kernel/cpu/amd.c
View File

@@ -3,7 +3,7 @@
#include <linux/bitops.h>
#include <linux/elf.h>
#include <linux/mm.h>
#include <linux/kvm_types.h>
#include <linux/io.h>
#include <linux/sched.h>
#include <linux/sched/clock.h>
@@ -1310,7 +1310,7 @@ unsigned long amd_get_dr_addr_mask(unsigned int dr)
return per_cpu(amd_dr_addr_mask[dr], smp_processor_id());
}
EXPORT_SYMBOL_GPL(amd_get_dr_addr_mask);
EXPORT_SYMBOL_FOR_KVM(amd_get_dr_addr_mask);
static void zenbleed_check_cpu(void *unused)
{

17
arch/x86/kernel/cpu/bugs.c
View File

@@ -16,6 +16,7 @@
#include <linux/sched/smt.h>
#include <linux/pgtable.h>
#include <linux/bpf.h>
#include <linux/kvm_types.h>
#include <asm/spec-ctrl.h>
#include <asm/cmdline.h>
@@ -178,7 +179,7 @@ DEFINE_STATIC_KEY_FALSE(switch_mm_always_ibpb);
/* Control IBPB on vCPU load */
DEFINE_STATIC_KEY_FALSE(switch_vcpu_ibpb);
EXPORT_SYMBOL_GPL(switch_vcpu_ibpb);
EXPORT_SYMBOL_FOR_KVM(switch_vcpu_ibpb);
/* Control CPU buffer clear before idling (halt, mwait) */
DEFINE_STATIC_KEY_FALSE(cpu_buf_idle_clear);
@@ -197,7 +198,7 @@ DEFINE_STATIC_KEY_FALSE(switch_mm_cond_l1d_flush);
* mitigation is required.
*/
DEFINE_STATIC_KEY_FALSE(cpu_buf_vm_clear);
EXPORT_SYMBOL_GPL(cpu_buf_vm_clear);
EXPORT_SYMBOL_FOR_KVM(cpu_buf_vm_clear);
#undef pr_fmt
#define pr_fmt(fmt) "mitigations: " fmt
@@ -365,7 +366,7 @@ x86_virt_spec_ctrl(u64 guest_virt_spec_ctrl, bool setguest)
speculation_ctrl_update(tif);
}
}
EXPORT_SYMBOL_GPL(x86_virt_spec_ctrl);
EXPORT_SYMBOL_FOR_KVM(x86_virt_spec_ctrl);
static void x86_amd_ssb_disable(void)
{
@@ -1031,7 +1032,7 @@ bool gds_ucode_mitigated(void)
return (gds_mitigation == GDS_MITIGATION_FULL ||
gds_mitigation == GDS_MITIGATION_FULL_LOCKED);
}
EXPORT_SYMBOL_GPL(gds_ucode_mitigated);
EXPORT_SYMBOL_FOR_KVM(gds_ucode_mitigated);
void update_gds_msr(void)
{
@@ -2858,7 +2859,7 @@ void x86_spec_ctrl_setup_ap(void)
}
bool itlb_multihit_kvm_mitigation;
EXPORT_SYMBOL_GPL(itlb_multihit_kvm_mitigation);
EXPORT_SYMBOL_FOR_KVM(itlb_multihit_kvm_mitigation);
#undef pr_fmt
#define pr_fmt(fmt) "L1TF: " fmt
@@ -2866,11 +2867,9 @@ EXPORT_SYMBOL_GPL(itlb_multihit_kvm_mitigation);
/* Default mitigation for L1TF-affected CPUs */
enum l1tf_mitigations l1tf_mitigation __ro_after_init =
IS_ENABLED(CONFIG_MITIGATION_L1TF) ? L1TF_MITIGATION_AUTO : L1TF_MITIGATION_OFF;
#if IS_ENABLED(CONFIG_KVM_INTEL)
EXPORT_SYMBOL_GPL(l1tf_mitigation);
#endif
EXPORT_SYMBOL_FOR_KVM(l1tf_mitigation);
enum vmx_l1d_flush_state l1tf_vmx_mitigation = VMENTER_L1D_FLUSH_AUTO;
EXPORT_SYMBOL_GPL(l1tf_vmx_mitigation);
EXPORT_SYMBOL_FOR_KVM(l1tf_vmx_mitigation);
/*
* These CPUs all support 44bits physical address space internally in the

3
arch/x86/kernel/cpu/bus_lock.c
View File

@@ -6,6 +6,7 @@
#include <linux/workqueue.h>
#include <linux/delay.h>
#include <linux/cpuhotplug.h>
#include <linux/kvm_types.h>
#include <asm/cpu_device_id.h>
#include <asm/cmdline.h>
#include <asm/traps.h>
@@ -289,7 +290,7 @@ bool handle_guest_split_lock(unsigned long ip)
force_sig_fault(SIGBUS, BUS_ADRALN, NULL);
return false;
}
EXPORT_SYMBOL_GPL(handle_guest_split_lock);
EXPORT_SYMBOL_FOR_KVM(handle_guest_split_lock);
void bus_lock_init(void)
{

7
arch/x86/kernel/cpu/common.c
View File

@@ -7,6 +7,7 @@
#include <linux/bitops.h>
#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/kvm_types.h>
#include <linux/percpu.h>
#include <linux/string.h>
#include <linux/ctype.h>
@@ -460,14 +461,14 @@ void cr4_update_irqsoff(unsigned long set, unsigned long clear)
__write_cr4(newval);
}
}
EXPORT_SYMBOL(cr4_update_irqsoff);
EXPORT_SYMBOL_FOR_KVM(cr4_update_irqsoff);
/* Read the CR4 shadow. */
unsigned long cr4_read_shadow(void)
{
return this_cpu_read(cpu_tlbstate.cr4);
}
EXPORT_SYMBOL_GPL(cr4_read_shadow);
EXPORT_SYMBOL_FOR_KVM(cr4_read_shadow);
void cr4_init(void)
{
@@ -722,7 +723,7 @@ void load_direct_gdt(int cpu)
gdt_descr.size = GDT_SIZE - 1;
load_gdt(&gdt_descr);
}
EXPORT_SYMBOL_GPL(load_direct_gdt);
EXPORT_SYMBOL_FOR_KVM(load_direct_gdt);
/* Load a fixmap remapping of the per-cpu GDT */
void load_fixmap_gdt(int cpu)

3
arch/x86/kernel/cpu/sgx/main.c
View File

@@ -5,6 +5,7 @@
#include <linux/freezer.h>
#include <linux/highmem.h>
#include <linux/kthread.h>
#include <linux/kvm_types.h>
#include <linux/miscdevice.h>
#include <linux/node.h>
#include <linux/pagemap.h>
@@ -915,7 +916,7 @@ int sgx_set_attribute(unsigned long *allowed_attributes,
*allowed_attributes |= SGX_ATTR_PROVISIONKEY;
return 0;
}
EXPORT_SYMBOL_GPL(sgx_set_attribute);
EXPORT_SYMBOL_FOR_KVM(sgx_set_attribute);
static int __init sgx_init(void)
{

5
arch/x86/kernel/cpu/sgx/virt.c
View File

@@ -5,6 +5,7 @@
* Copyright(c) 2021 Intel Corporation.
*/
#include <linux/kvm_types.h>
#include <linux/miscdevice.h>
#include <linux/mm.h>
#include <linux/mman.h>
@@ -363,7 +364,7 @@ int sgx_virt_ecreate(struct sgx_pageinfo *pageinfo, void __user *secs,
WARN_ON_ONCE(ret);
return 0;
}
EXPORT_SYMBOL_GPL(sgx_virt_ecreate);
EXPORT_SYMBOL_FOR_KVM(sgx_virt_ecreate);
static int __sgx_virt_einit(void __user *sigstruct, void __user *token,
void __user *secs)
@@ -432,4 +433,4 @@ int sgx_virt_einit(void __user *sigstruct, void __user *token,
return ret;
}
EXPORT_SYMBOL_GPL(sgx_virt_einit);
EXPORT_SYMBOL_FOR_KVM(sgx_virt_einit);

3
arch/x86/kernel/e820.c
View File

@@ -16,6 +16,7 @@
#include <linux/firmware-map.h>
#include <linux/sort.h>
#include <linux/memory_hotplug.h>
#include <linux/kvm_types.h>
#include <asm/e820/api.h>
#include <asm/setup.h>
@@ -95,7 +96,7 @@ bool e820__mapped_raw_any(u64 start, u64 end, enum e820_type type)
{
return _e820__mapped_any(e820_table_firmware, start, end, type);
}
EXPORT_SYMBOL_GPL(e820__mapped_raw_any);
EXPORT_SYMBOL_FOR_KVM(e820__mapped_raw_any);
bool e820__mapped_any(u64 start, u64 end, enum e820_type type)
{

21
arch/x86/kernel/fpu/core.c
View File

@@ -18,6 +18,7 @@
#include <uapi/asm/kvm.h>
#include <linux/hardirq.h>
#include <linux/kvm_types.h>
#include <linux/pkeys.h>
#include <linux/vmalloc.h>
@@ -276,7 +277,7 @@ bool fpu_alloc_guest_fpstate(struct fpu_guest *gfpu)
return true;
}
EXPORT_SYMBOL_GPL(fpu_alloc_guest_fpstate);
EXPORT_SYMBOL_FOR_KVM(fpu_alloc_guest_fpstate);
void fpu_free_guest_fpstate(struct fpu_guest *gfpu)
{
@@ -291,7 +292,7 @@ void fpu_free_guest_fpstate(struct fpu_guest *gfpu)
gfpu->fpstate = NULL;
vfree(fpstate);
}
EXPORT_SYMBOL_GPL(fpu_free_guest_fpstate);
EXPORT_SYMBOL_FOR_KVM(fpu_free_guest_fpstate);
/*
* fpu_enable_guest_xfd_features - Check xfeatures against guest perm and enable
@@ -313,7 +314,7 @@ int fpu_enable_guest_xfd_features(struct fpu_guest *guest_fpu, u64 xfeatures)
return __xfd_enable_feature(xfeatures, guest_fpu);
}
EXPORT_SYMBOL_GPL(fpu_enable_guest_xfd_features);
EXPORT_SYMBOL_FOR_KVM(fpu_enable_guest_xfd_features);
#ifdef CONFIG_X86_64
void fpu_update_guest_xfd(struct fpu_guest *guest_fpu, u64 xfd)
@@ -324,7 +325,7 @@ void fpu_update_guest_xfd(struct fpu_guest *guest_fpu, u64 xfd)
xfd_update_state(guest_fpu->fpstate);
fpregs_unlock();
}
EXPORT_SYMBOL_GPL(fpu_update_guest_xfd);
EXPORT_SYMBOL_FOR_KVM(fpu_update_guest_xfd);
/**
* fpu_sync_guest_vmexit_xfd_state - Synchronize XFD MSR and software state
@@ -348,7 +349,7 @@ void fpu_sync_guest_vmexit_xfd_state(void)
__this_cpu_write(xfd_state, fpstate->xfd);
}
}
EXPORT_SYMBOL_GPL(fpu_sync_guest_vmexit_xfd_state);
EXPORT_SYMBOL_FOR_KVM(fpu_sync_guest_vmexit_xfd_state);
#endif /* CONFIG_X86_64 */
int fpu_swap_kvm_fpstate(struct fpu_guest *guest_fpu, bool enter_guest)
@@ -390,7 +391,7 @@ int fpu_swap_kvm_fpstate(struct fpu_guest *guest_fpu, bool enter_guest)
fpregs_unlock();
return 0;
}
EXPORT_SYMBOL_GPL(fpu_swap_kvm_fpstate);
EXPORT_SYMBOL_FOR_KVM(fpu_swap_kvm_fpstate);
void fpu_copy_guest_fpstate_to_uabi(struct fpu_guest *gfpu, void *buf,
unsigned int size, u64 xfeatures, u32 pkru)
@@ -409,7 +410,7 @@ void fpu_copy_guest_fpstate_to_uabi(struct fpu_guest *gfpu, void *buf,
ustate->xsave.header.xfeatures = XFEATURE_MASK_FPSSE;
}
}
EXPORT_SYMBOL_GPL(fpu_copy_guest_fpstate_to_uabi);
EXPORT_SYMBOL_FOR_KVM(fpu_copy_guest_fpstate_to_uabi);
int fpu_copy_uabi_to_guest_fpstate(struct fpu_guest *gfpu, const void *buf,
u64 xcr0, u32 *vpkru)
@@ -439,7 +440,7 @@ int fpu_copy_uabi_to_guest_fpstate(struct fpu_guest *gfpu, const void *buf,
return copy_uabi_from_kernel_to_xstate(kstate, ustate, vpkru);
}
EXPORT_SYMBOL_GPL(fpu_copy_uabi_to_guest_fpstate);
EXPORT_SYMBOL_FOR_KVM(fpu_copy_uabi_to_guest_fpstate);
#endif /* CONFIG_KVM */
void kernel_fpu_begin_mask(unsigned int kfpu_mask)
@@ -857,7 +858,7 @@ void switch_fpu_return(void)
fpregs_restore_userregs();
}
EXPORT_SYMBOL_GPL(switch_fpu_return);
EXPORT_SYMBOL_FOR_KVM(switch_fpu_return);
void fpregs_lock_and_load(void)
{
@@ -892,7 +893,7 @@ void fpregs_assert_state_consistent(void)
WARN_ON_FPU(!fpregs_state_valid(fpu, smp_processor_id()));
}
EXPORT_SYMBOL_GPL(fpregs_assert_state_consistent);
EXPORT_SYMBOL_FOR_KVM(fpregs_assert_state_consistent);
#endif
void fpregs_mark_activate(void)

7
arch/x86/kernel/fpu/xstate.c
View File

@@ -8,6 +8,7 @@
#include <linux/compat.h>
#include <linux/cpu.h>
#include <linux/mman.h>
#include <linux/kvm_types.h>
#include <linux/nospec.h>
#include <linux/pkeys.h>
#include <linux/seq_file.h>
@@ -1058,7 +1059,7 @@ void *get_xsave_addr(struct xregs_state *xsave, int xfeature_nr)
return __raw_xsave_addr(xsave, xfeature_nr);
}
EXPORT_SYMBOL_GPL(get_xsave_addr);
EXPORT_SYMBOL_FOR_KVM(get_xsave_addr);
/*
* Given an xstate feature nr, calculate where in the xsave buffer the state is.
@@ -1482,7 +1483,7 @@ void fpstate_clear_xstate_component(struct fpstate *fpstate, unsigned int xfeatu
if (addr)
memset(addr, 0, xstate_sizes[xfeature]);
}
EXPORT_SYMBOL_GPL(fpstate_clear_xstate_component);
EXPORT_SYMBOL_FOR_KVM(fpstate_clear_xstate_component);
#endif
#ifdef CONFIG_X86_64
@@ -1818,7 +1819,7 @@ u64 xstate_get_guest_group_perm(void)
{
return xstate_get_group_perm(true);
}
EXPORT_SYMBOL_GPL(xstate_get_guest_group_perm);
EXPORT_SYMBOL_FOR_KVM(xstate_get_guest_group_perm);
/**
* fpu_xstate_prctl - xstate permission operations

3
arch/x86/kernel/hw_breakpoint.c
View File

@@ -24,6 +24,7 @@
#include <linux/percpu.h>
#include <linux/kdebug.h>
#include <linux/kernel.h>
#include <linux/kvm_types.h>
#include <linux/export.h>
#include <linux/sched.h>
#include <linux/smp.h>
@@ -489,7 +490,7 @@ void hw_breakpoint_restore(void)
set_debugreg(DR6_RESERVED, 6);
set_debugreg(__this_cpu_read(cpu_dr7), 7);
}
EXPORT_SYMBOL_GPL(hw_breakpoint_restore);
EXPORT_SYMBOL_FOR_KVM(hw_breakpoint_restore);
/*
* Handle debug exception notifications.

3
arch/x86/kernel/irq.c
View File

@@ -12,6 +12,7 @@
#include <linux/delay.h>
#include <linux/export.h>
#include <linux/irq.h>
#include <linux/kvm_types.h>
#include <asm/irq_stack.h>
#include <asm/apic.h>
@@ -361,7 +362,7 @@ void kvm_set_posted_intr_wakeup_handler(void (*handler)(void))
synchronize_rcu();
}
}
EXPORT_SYMBOL_GPL(kvm_set_posted_intr_wakeup_handler);
EXPORT_SYMBOL_FOR_KVM(kvm_set_posted_intr_wakeup_handler);
/*
* Handler for POSTED_INTERRUPT_VECTOR.

5
arch/x86/kernel/kvm.c
View File

@@ -29,6 +29,7 @@
#include <linux/syscore_ops.h>
#include <linux/cc_platform.h>
#include <linux/efi.h>
#include <linux/kvm_types.h>
#include <asm/timer.h>
#include <asm/cpu.h>
#include <asm/traps.h>
@@ -162,7 +163,7 @@ void kvm_async_pf_task_wait_schedule(u32 token)
}
finish_swait(&n.wq, &wait);
}
EXPORT_SYMBOL_GPL(kvm_async_pf_task_wait_schedule);
EXPORT_SYMBOL_FOR_KVM(kvm_async_pf_task_wait_schedule);
static void apf_task_wake_one(struct kvm_task_sleep_node *n)
{
@@ -253,7 +254,7 @@ noinstr u32 kvm_read_and_reset_apf_flags(void)
return flags;
}
EXPORT_SYMBOL_GPL(kvm_read_and_reset_apf_flags);
EXPORT_SYMBOL_FOR_KVM(kvm_read_and_reset_apf_flags);
noinstr bool __kvm_handle_async_pf(struct pt_regs *regs, u32 token)
{

5
arch/x86/kernel/nmi.c
View File

@@ -24,6 +24,7 @@
#include <linux/export.h>
#include <linux/atomic.h>
#include <linux/sched/clock.h>
#include <linux/kvm_types.h>
#include <asm/cpu_entry_area.h>
#include <asm/traps.h>
@@ -613,9 +614,7 @@ DEFINE_IDTENTRY_RAW(exc_nmi_kvm_vmx)
{
exc_nmi(regs);
}
#if IS_MODULE(CONFIG_KVM_INTEL)
EXPORT_SYMBOL_GPL(asm_exc_nmi_kvm_vmx);
#endif
EXPORT_SYMBOL_FOR_KVM(asm_exc_nmi_kvm_vmx);
#endif
#ifdef CONFIG_NMI_CHECK_CPU

5
arch/x86/kernel/process_64.c
View File

@@ -30,6 +30,7 @@
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/export.h>
#include <linux/kvm_types.h>
#include <linux/ptrace.h>
#include <linux/notifier.h>
#include <linux/kprobes.h>
@@ -303,9 +304,7 @@ void current_save_fsgs(void)
save_fsgs(current);
local_irq_restore(flags);
}
#if IS_ENABLED(CONFIG_KVM)
EXPORT_SYMBOL_GPL(current_save_fsgs);
#endif
EXPORT_SYMBOL_FOR_KVM(current_save_fsgs);
static __always_inline void loadseg(enum which_selector which,
unsigned short sel)

5
arch/x86/kernel/reboot.c
View File

@@ -13,6 +13,7 @@
#include <linux/objtool.h>
#include <linux/pgtable.h>
#include <linux/kexec.h>
#include <linux/kvm_types.h>
#include <acpi/reboot.h>
#include <asm/io.h>
#include <asm/apic.h>
@@ -541,7 +542,7 @@ void cpu_emergency_register_virt_callback(cpu_emergency_virt_cb *callback)
rcu_assign_pointer(cpu_emergency_virt_callback, callback);
}
EXPORT_SYMBOL_GPL(cpu_emergency_register_virt_callback);
EXPORT_SYMBOL_FOR_KVM(cpu_emergency_register_virt_callback);
void cpu_emergency_unregister_virt_callback(cpu_emergency_virt_cb *callback)
{
@@ -551,7 +552,7 @@ void cpu_emergency_unregister_virt_callback(cpu_emergency_virt_cb *callback)
rcu_assign_pointer(cpu_emergency_virt_callback, NULL);
synchronize_rcu();
}
EXPORT_SYMBOL_GPL(cpu_emergency_unregister_virt_callback);
EXPORT_SYMBOL_FOR_KVM(cpu_emergency_unregister_virt_callback);
/*
* Disable virtualization, i.e. VMX or SVM, to ensure INIT is recognized during

1
arch/x86/kernel/tsc.c
View File

@@ -11,6 +11,7 @@
#include <linux/cpufreq.h>
#include <linux/delay.h>
#include <linux/clocksource.h>
#include <linux/kvm_types.h>
#include <linux/percpu.h>
#include <linux/timex.h>
#include <linux/static_key.h>

9
arch/x86/lib/cache-smp.c
View File

@@ -2,6 +2,7 @@
#include <asm/paravirt.h>
#include <linux/smp.h>
#include <linux/export.h>
#include <linux/kvm_types.h>
static void __wbinvd(void *dummy)
{
@@ -12,7 +13,7 @@ void wbinvd_on_cpu(int cpu)
{
smp_call_function_single(cpu, __wbinvd, NULL, 1);
}
EXPORT_SYMBOL(wbinvd_on_cpu);
EXPORT_SYMBOL_FOR_KVM(wbinvd_on_cpu);
void wbinvd_on_all_cpus(void)
{
@@ -24,7 +25,7 @@ void wbinvd_on_cpus_mask(struct cpumask *cpus)
{
on_each_cpu_mask(cpus, __wbinvd, NULL, 1);
}
EXPORT_SYMBOL_GPL(wbinvd_on_cpus_mask);
EXPORT_SYMBOL_FOR_KVM(wbinvd_on_cpus_mask);
static void __wbnoinvd(void *dummy)
{
@@ -35,10 +36,10 @@ void wbnoinvd_on_all_cpus(void)
{
on_each_cpu(__wbnoinvd, NULL, 1);
}
EXPORT_SYMBOL_GPL(wbnoinvd_on_all_cpus);
EXPORT_SYMBOL_FOR_KVM(wbnoinvd_on_all_cpus);
void wbnoinvd_on_cpus_mask(struct cpumask *cpus)
{
on_each_cpu_mask(cpus, __wbnoinvd, NULL, 1);
}
EXPORT_SYMBOL_GPL(wbnoinvd_on_cpus_mask);
EXPORT_SYMBOL_FOR_KVM(wbnoinvd_on_cpus_mask);

5
arch/x86/lib/msr.c
View File

@@ -1,5 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/export.h>
#include <linux/kvm_types.h>
#include <linux/percpu.h>
#include <linux/preempt.h>
#include <asm/msr.h>
@@ -103,7 +104,7 @@ int msr_set_bit(u32 msr, u8 bit)
{
return __flip_bit(msr, bit, true);
}
EXPORT_SYMBOL_GPL(msr_set_bit);
EXPORT_SYMBOL_FOR_KVM(msr_set_bit);
/**
* msr_clear_bit - Clear @bit in a MSR @msr.
@@ -119,7 +120,7 @@ int msr_clear_bit(u32 msr, u8 bit)
{
return __flip_bit(msr, bit, false);
}
EXPORT_SYMBOL_GPL(msr_clear_bit);
EXPORT_SYMBOL_FOR_KVM(msr_clear_bit);
#ifdef CONFIG_TRACEPOINTS
void do_trace_write_msr(u32 msr, u64 val, int failed)

3
arch/x86/mm/pat/memtype.c
View File

@@ -42,6 +42,7 @@
#include <linux/highmem.h>
#include <linux/fs.h>
#include <linux/rbtree.h>
#include <linux/kvm_types.h>
#include <asm/cpu_device_id.h>
#include <asm/cacheflush.h>
@@ -697,7 +698,7 @@ bool pat_pfn_immune_to_uc_mtrr(unsigned long pfn)
cm == _PAGE_CACHE_MODE_UC_MINUS ||
cm == _PAGE_CACHE_MODE_WC;
}
EXPORT_SYMBOL_GPL(pat_pfn_immune_to_uc_mtrr);
EXPORT_SYMBOL_FOR_KVM(pat_pfn_immune_to_uc_mtrr);
/**
* memtype_reserve_io - Request a memory type mapping for a region of memory

5
arch/x86/mm/tlb.c
View File

@@ -12,6 +12,7 @@
#include <linux/task_work.h>
#include <linux/mmu_notifier.h>
#include <linux/mmu_context.h>
#include <linux/kvm_types.h>
#include <asm/tlbflush.h>
#include <asm/mmu_context.h>
@@ -1582,7 +1583,7 @@ unsigned long __get_current_cr3_fast(void)
VM_BUG_ON(cr3 != __read_cr3());
return cr3;
}
EXPORT_SYMBOL_GPL(__get_current_cr3_fast);
EXPORT_SYMBOL_FOR_KVM(__get_current_cr3_fast);
/*
* Flush one page in the kernel mapping
@@ -1723,7 +1724,7 @@ void __flush_tlb_all(void)
flush_tlb_local();
}
}
EXPORT_SYMBOL_GPL(__flush_tlb_all);
EXPORT_SYMBOL_FOR_KVM(__flush_tlb_all);
void arch_tlbbatch_flush(struct arch_tlbflush_unmap_batch *batch)
{

69
arch/x86/virt/vmx/tdx/tdx.c
View File

@@ -29,6 +29,7 @@
#include <linux/acpi.h>
#include <linux/suspend.h>
#include <linux/idr.h>
#include <linux/kvm_types.h>
#include <asm/page.h>
#include <asm/special_insns.h>
#include <asm/msr-index.h>
@@ -181,7 +182,7 @@ int tdx_cpu_enable(void)
return 0;
}
EXPORT_SYMBOL_GPL(tdx_cpu_enable);
EXPORT_SYMBOL_FOR_KVM(tdx_cpu_enable);
/*
* Add a memory region as a TDX memory block. The caller must make sure
@@ -662,7 +663,7 @@ void tdx_quirk_reset_page(struct page *page)
{
tdx_quirk_reset_paddr(page_to_phys(page), PAGE_SIZE);
}
EXPORT_SYMBOL_GPL(tdx_quirk_reset_page);
EXPORT_SYMBOL_FOR_KVM(tdx_quirk_reset_page);
static void tdmr_quirk_reset_pamt(struct tdmr_info *tdmr)
{
@@ -1216,7 +1217,7 @@ int tdx_enable(void)
return ret;
}
EXPORT_SYMBOL_GPL(tdx_enable);
EXPORT_SYMBOL_FOR_KVM(tdx_enable);
static bool is_pamt_page(unsigned long phys)
{
@@ -1477,13 +1478,13 @@ const struct tdx_sys_info *tdx_get_sysinfo(void)
return p;
}
EXPORT_SYMBOL_GPL(tdx_get_sysinfo);
EXPORT_SYMBOL_FOR_KVM(tdx_get_sysinfo);
u32 tdx_get_nr_guest_keyids(void)
{
return tdx_nr_guest_keyids;
}
EXPORT_SYMBOL_GPL(tdx_get_nr_guest_keyids);
EXPORT_SYMBOL_FOR_KVM(tdx_get_nr_guest_keyids);
int tdx_guest_keyid_alloc(void)
{
@@ -1491,13 +1492,13 @@ int tdx_guest_keyid_alloc(void)
tdx_guest_keyid_start + tdx_nr_guest_keyids - 1,
GFP_KERNEL);
}
EXPORT_SYMBOL_GPL(tdx_guest_keyid_alloc);
EXPORT_SYMBOL_FOR_KVM(tdx_guest_keyid_alloc);
void tdx_guest_keyid_free(unsigned int keyid)
{
ida_free(&tdx_guest_keyid_pool, keyid);
}
EXPORT_SYMBOL_GPL(tdx_guest_keyid_free);
EXPORT_SYMBOL_FOR_KVM(tdx_guest_keyid_free);
static inline u64 tdx_tdr_pa(struct tdx_td *td)
{
@@ -1521,7 +1522,7 @@ noinstr u64 tdh_vp_enter(struct tdx_vp *td, struct tdx_module_args *args)
return __seamcall_dirty_cache(__seamcall_saved_ret, TDH_VP_ENTER, args);
}
EXPORT_SYMBOL_GPL(tdh_vp_enter);
EXPORT_SYMBOL_FOR_KVM(tdh_vp_enter);
u64 tdh_mng_addcx(struct tdx_td *td, struct page *tdcs_page)
{
@@ -1533,7 +1534,7 @@ u64 tdh_mng_addcx(struct tdx_td *td, struct page *tdcs_page)
tdx_clflush_page(tdcs_page);
return seamcall(TDH_MNG_ADDCX, &args);
}
EXPORT_SYMBOL_GPL(tdh_mng_addcx);
EXPORT_SYMBOL_FOR_KVM(tdh_mng_addcx);
u64 tdh_mem_page_add(struct tdx_td *td, u64 gpa, struct page *page, struct page *source, u64 *ext_err1, u64 *ext_err2)
{
@@ -1553,7 +1554,7 @@ u64 tdh_mem_page_add(struct tdx_td *td, u64 gpa, struct page *page, struct page
return ret;
}
EXPORT_SYMBOL_GPL(tdh_mem_page_add);
EXPORT_SYMBOL_FOR_KVM(tdh_mem_page_add);
u64 tdh_mem_sept_add(struct tdx_td *td, u64 gpa, int level, struct page *page, u64 *ext_err1, u64 *ext_err2)
{
@@ -1572,7 +1573,7 @@ u64 tdh_mem_sept_add(struct tdx_td *td, u64 gpa, int level, struct page *page, u
return ret;
}
EXPORT_SYMBOL_GPL(tdh_mem_sept_add);
EXPORT_SYMBOL_FOR_KVM(tdh_mem_sept_add);
u64 tdh_vp_addcx(struct tdx_vp *vp, struct page *tdcx_page)
{
@@ -1584,7 +1585,7 @@ u64 tdh_vp_addcx(struct tdx_vp *vp, struct page *tdcx_page)
tdx_clflush_page(tdcx_page);
return seamcall(TDH_VP_ADDCX, &args);
}
EXPORT_SYMBOL_GPL(tdh_vp_addcx);
EXPORT_SYMBOL_FOR_KVM(tdh_vp_addcx);
u64 tdh_mem_page_aug(struct tdx_td *td, u64 gpa, int level, struct page *page, u64 *ext_err1, u64 *ext_err2)
{
@@ -1603,7 +1604,7 @@ u64 tdh_mem_page_aug(struct tdx_td *td, u64 gpa, int level, struct page *page, u
return ret;
}
EXPORT_SYMBOL_GPL(tdh_mem_page_aug);
EXPORT_SYMBOL_FOR_KVM(tdh_mem_page_aug);
u64 tdh_mem_range_block(struct tdx_td *td, u64 gpa, int level, u64 *ext_err1, u64 *ext_err2)
{
@@ -1620,7 +1621,7 @@ u64 tdh_mem_range_block(struct tdx_td *td, u64 gpa, int level, u64 *ext_err1, u6
return ret;
}
EXPORT_SYMBOL_GPL(tdh_mem_range_block);
EXPORT_SYMBOL_FOR_KVM(tdh_mem_range_block);
u64 tdh_mng_key_config(struct tdx_td *td)
{
@@ -1630,7 +1631,7 @@ u64 tdh_mng_key_config(struct tdx_td *td)
return seamcall(TDH_MNG_KEY_CONFIG, &args);
}
EXPORT_SYMBOL_GPL(tdh_mng_key_config);
EXPORT_SYMBOL_FOR_KVM(tdh_mng_key_config);
u64 tdh_mng_create(struct tdx_td *td, u16 hkid)
{
@@ -1642,7 +1643,7 @@ u64 tdh_mng_create(struct tdx_td *td, u16 hkid)
tdx_clflush_page(td->tdr_page);
return seamcall(TDH_MNG_CREATE, &args);
}
EXPORT_SYMBOL_GPL(tdh_mng_create);
EXPORT_SYMBOL_FOR_KVM(tdh_mng_create);
u64 tdh_vp_create(struct tdx_td *td, struct tdx_vp *vp)
{
@@ -1654,7 +1655,7 @@ u64 tdh_vp_create(struct tdx_td *td, struct tdx_vp *vp)
tdx_clflush_page(vp->tdvpr_page);
return seamcall(TDH_VP_CREATE, &args);
}
EXPORT_SYMBOL_GPL(tdh_vp_create);
EXPORT_SYMBOL_FOR_KVM(tdh_vp_create);
u64 tdh_mng_rd(struct tdx_td *td, u64 field, u64 *data)
{
@@ -1671,7 +1672,7 @@ u64 tdh_mng_rd(struct tdx_td *td, u64 field, u64 *data)
return ret;
}
EXPORT_SYMBOL_GPL(tdh_mng_rd);
EXPORT_SYMBOL_FOR_KVM(tdh_mng_rd);
u64 tdh_mr_extend(struct tdx_td *td, u64 gpa, u64 *ext_err1, u64 *ext_err2)
{
@@ -1688,7 +1689,7 @@ u64 tdh_mr_extend(struct tdx_td *td, u64 gpa, u64 *ext_err1, u64 *ext_err2)
return ret;
}
EXPORT_SYMBOL_GPL(tdh_mr_extend);
EXPORT_SYMBOL_FOR_KVM(tdh_mr_extend);
u64 tdh_mr_finalize(struct tdx_td *td)
{
@@ -1698,7 +1699,7 @@ u64 tdh_mr_finalize(struct tdx_td *td)
return seamcall(TDH_MR_FINALIZE, &args);
}
EXPORT_SYMBOL_GPL(tdh_mr_finalize);
EXPORT_SYMBOL_FOR_KVM(tdh_mr_finalize);
u64 tdh_vp_flush(struct tdx_vp *vp)
{
@@ -1708,7 +1709,7 @@ u64 tdh_vp_flush(struct tdx_vp *vp)
return seamcall(TDH_VP_FLUSH, &args);
}
EXPORT_SYMBOL_GPL(tdh_vp_flush);
EXPORT_SYMBOL_FOR_KVM(tdh_vp_flush);
u64 tdh_mng_vpflushdone(struct tdx_td *td)
{
@@ -1718,7 +1719,7 @@ u64 tdh_mng_vpflushdone(struct tdx_td *td)
return seamcall(TDH_MNG_VPFLUSHDONE, &args);
}
EXPORT_SYMBOL_GPL(tdh_mng_vpflushdone);
EXPORT_SYMBOL_FOR_KVM(tdh_mng_vpflushdone);
u64 tdh_mng_key_freeid(struct tdx_td *td)
{
@@ -1728,7 +1729,7 @@ u64 tdh_mng_key_freeid(struct tdx_td *td)
return seamcall(TDH_MNG_KEY_FREEID, &args);
}
EXPORT_SYMBOL_GPL(tdh_mng_key_freeid);
EXPORT_SYMBOL_FOR_KVM(tdh_mng_key_freeid);
u64 tdh_mng_init(struct tdx_td *td, u64 td_params, u64 *extended_err)
{
@@ -1744,7 +1745,7 @@ u64 tdh_mng_init(struct tdx_td *td, u64 td_params, u64 *extended_err)
return ret;
}
EXPORT_SYMBOL_GPL(tdh_mng_init);
EXPORT_SYMBOL_FOR_KVM(tdh_mng_init);
u64 tdh_vp_rd(struct tdx_vp *vp, u64 field, u64 *data)
{
@@ -1761,7 +1762,7 @@ u64 tdh_vp_rd(struct tdx_vp *vp, u64 field, u64 *data)
return ret;
}
EXPORT_SYMBOL_GPL(tdh_vp_rd);
EXPORT_SYMBOL_FOR_KVM(tdh_vp_rd);
u64 tdh_vp_wr(struct tdx_vp *vp, u64 field, u64 data, u64 mask)
{
@@ -1774,7 +1775,7 @@ u64 tdh_vp_wr(struct tdx_vp *vp, u64 field, u64 data, u64 mask)
return seamcall(TDH_VP_WR, &args);
}
EXPORT_SYMBOL_GPL(tdh_vp_wr);
EXPORT_SYMBOL_FOR_KVM(tdh_vp_wr);
u64 tdh_vp_init(struct tdx_vp *vp, u64 initial_rcx, u32 x2apicid)
{
@@ -1787,7 +1788,7 @@ u64 tdh_vp_init(struct tdx_vp *vp, u64 initial_rcx, u32 x2apicid)
/* apicid requires version == 1. */
return seamcall(TDH_VP_INIT | (1ULL << TDX_VERSION_SHIFT), &args);
}
EXPORT_SYMBOL_GPL(tdh_vp_init);
EXPORT_SYMBOL_FOR_KVM(tdh_vp_init);
/*
* TDX ABI defines output operands as PT, OWNER and SIZE. These are TDX defined fomats.
@@ -1809,7 +1810,7 @@ u64 tdh_phymem_page_reclaim(struct page *page, u64 *tdx_pt, u64 *tdx_owner, u64
return ret;
}
EXPORT_SYMBOL_GPL(tdh_phymem_page_reclaim);
EXPORT_SYMBOL_FOR_KVM(tdh_phymem_page_reclaim);
u64 tdh_mem_track(struct tdx_td *td)
{
@@ -1819,7 +1820,7 @@ u64 tdh_mem_track(struct tdx_td *td)
return seamcall(TDH_MEM_TRACK, &args);
}
EXPORT_SYMBOL_GPL(tdh_mem_track);
EXPORT_SYMBOL_FOR_KVM(tdh_mem_track);
u64 tdh_mem_page_remove(struct tdx_td *td, u64 gpa, u64 level, u64 *ext_err1, u64 *ext_err2)
{
@@ -1836,7 +1837,7 @@ u64 tdh_mem_page_remove(struct tdx_td *td, u64 gpa, u64 level, u64 *ext_err1, u6
return ret;
}
EXPORT_SYMBOL_GPL(tdh_mem_page_remove);
EXPORT_SYMBOL_FOR_KVM(tdh_mem_page_remove);
u64 tdh_phymem_cache_wb(bool resume)
{
@@ -1846,7 +1847,7 @@ u64 tdh_phymem_cache_wb(bool resume)
return seamcall(TDH_PHYMEM_CACHE_WB, &args);
}
EXPORT_SYMBOL_GPL(tdh_phymem_cache_wb);
EXPORT_SYMBOL_FOR_KVM(tdh_phymem_cache_wb);
u64 tdh_phymem_page_wbinvd_tdr(struct tdx_td *td)
{
@@ -1856,7 +1857,7 @@ u64 tdh_phymem_page_wbinvd_tdr(struct tdx_td *td)
return seamcall(TDH_PHYMEM_PAGE_WBINVD, &args);
}
EXPORT_SYMBOL_GPL(tdh_phymem_page_wbinvd_tdr);
EXPORT_SYMBOL_FOR_KVM(tdh_phymem_page_wbinvd_tdr);
u64 tdh_phymem_page_wbinvd_hkid(u64 hkid, struct page *page)
{
@@ -1866,7 +1867,7 @@ u64 tdh_phymem_page_wbinvd_hkid(u64 hkid, struct page *page)
return seamcall(TDH_PHYMEM_PAGE_WBINVD, &args);
}
EXPORT_SYMBOL_GPL(tdh_phymem_page_wbinvd_hkid);
EXPORT_SYMBOL_FOR_KVM(tdh_phymem_page_wbinvd_hkid);
#ifdef CONFIG_KEXEC_CORE
void tdx_cpu_flush_cache_for_kexec(void)
@@ -1884,5 +1885,5 @@ void tdx_cpu_flush_cache_for_kexec(void)
wbinvd();
this_cpu_write(cache_state_incoherent, false);
}
EXPORT_SYMBOL_GPL(tdx_cpu_flush_cache_for_kexec);
EXPORT_SYMBOL_FOR_KVM(tdx_cpu_flush_cache_for_kexec);
#endif

14
include/linux/kvm_types.h
View File

@@ -11,8 +11,22 @@
#ifdef KVM_SUB_MODULES
#define EXPORT_SYMBOL_FOR_KVM_INTERNAL(symbol) \
EXPORT_SYMBOL_FOR_MODULES(symbol, __stringify(KVM_SUB_MODULES))
#define EXPORT_SYMBOL_FOR_KVM(symbol) \
EXPORT_SYMBOL_FOR_MODULES(symbol, "kvm," __stringify(KVM_SUB_MODULES))
#else
#define EXPORT_SYMBOL_FOR_KVM_INTERNAL(symbol)
/*
* Allow architectures to provide a custom EXPORT_SYMBOL_FOR_KVM, but only
* if there are no submodules, e.g. to allow suppressing exports if KVM=m, but
* kvm.ko won't actually be built (due to lack of at least one submodule).
*/
#ifndef EXPORT_SYMBOL_FOR_KVM
#if IS_MODULE(CONFIG_KVM)
#define EXPORT_SYMBOL_FOR_KVM(symbol) EXPORT_SYMBOL_FOR_MODULES(symbol, "kvm")
#else
#define EXPORT_SYMBOL_FOR_KVM(symbol)
#endif /* IS_MODULE(CONFIG_KVM) */
#endif /* EXPORT_SYMBOL_FOR_KVM */
#endif
#ifndef __ASSEMBLER__