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Merge tag 'x86_misc_for_6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull misc x86 updates from Dave Hansen:
 "The most significant are some changes to ensure that symbols exported
  for KVM are used only by KVM modules themselves, along with some
  related cleanups.

  In true x86/misc fashion, the other patch is completely unrelated and
  just enhances an existing pr_warn() to make it clear to users how they
  have tainted their kernel when something is mucking with MSRs.

  Summary:

   - Make MSR-induced taint easier for users to track down

   - Restrict KVM-specific exports to KVM itself"

* tag 'x86_misc_for_6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Restrict KVM-induced symbol exports to KVM modules where obvious/possible
  x86/mm: Drop unnecessary export of "ptdump_walk_pgd_level_debugfs"
  x86/mtrr: Drop unnecessary export of "mtrr_state"
  x86/bugs: Drop unnecessary export of "x86_spec_ctrl_base"
  x86/msr: Add CPU_OUT_OF_SPEC taint name to "unrecognized" pr_warn(msg)
This commit is contained in:
Linus Torvalds
2025-12-02 14:16:42 -08:00
parent 54de197c9a 6276c67f2b
commit e2aa39b368
35 changed files with 145 additions and 108 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/x86/entry/entry.S
+3 -4
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);
SYM_FUNC_START(__WARN_trap)
ANNOTATE_NOENDBR
@@ -56,8 +56,7 @@ 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
arch/x86/entry/entry_64.S
+2 -1
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)
arch/x86/entry/entry_64_fred.S
+2 -1
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
arch/x86/events/amd/core.c
+3 -2
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>
@@ -1574,7 +1575,7 @@ 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)
{
@@ -1591,4 +1592,4 @@ 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);
arch/x86/events/core.c
+4 -3
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>
@@ -723,7 +724,7 @@ 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
@@ -3078,7 +3079,7 @@ 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)
{
@@ -3089,4 +3090,4 @@ 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);
arch/x86/events/intel/lbr.c
+2 -1
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),
arch/x86/events/intel/pt.c
+4 -3
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
arch/x86/include/asm/kvm_types.h
+5
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
arch/x86/kernel/apic/apic.c
+2 -1
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>
@@ -2319,7 +2320,7 @@ 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)
{
arch/x86/kernel/apic/apic_common.c
+2 -1
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
arch/x86/kernel/cpu/amd.c
+2 -2
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>
@@ -1318,7 +1318,7 @@ 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)
{
arch/x86/kernel/cpu/bugs.c
+8 -10
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>
@@ -55,7 +56,6 @@
/* The base value of the SPEC_CTRL MSR without task-specific bits set */
u64 x86_spec_ctrl_base;
EXPORT_SYMBOL_GPL(x86_spec_ctrl_base);
/* The current value of the SPEC_CTRL MSR with task-specific bits set */
DEFINE_PER_CPU(u64, x86_spec_ctrl_current);
@@ -132,7 +132,7 @@ 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);
@@ -151,7 +151,7 @@ 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
@@ -226,7 +226,7 @@ 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)
{
@@ -892,7 +892,7 @@ 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)
{
@@ -2719,7 +2719,7 @@ 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
@@ -2727,11 +2727,9 @@ 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
arch/x86/kernel/cpu/bus_lock.c
+2 -1
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)
{
arch/x86/kernel/cpu/common.c
+4 -3
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>
@@ -464,14 +465,14 @@ 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)
{
@@ -726,7 +727,7 @@ 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)
arch/x86/kernel/cpu/mtrr/generic.c
-1
View File
@@ -89,7 +89,6 @@ static int mtrr_state_set;
u64 mtrr_tom2;
struct mtrr_state_type mtrr_state;
EXPORT_SYMBOL_GPL(mtrr_state);
/* Reserved bits in the high portion of the MTRRphysBaseN MSR. */
u32 phys_hi_rsvd;
arch/x86/kernel/cpu/sgx/main.c
+2 -1
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>
@@ -916,7 +917,7 @@ 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);
/* Counter to count the active SGX users */
static int sgx_usage_count;
arch/x86/kernel/cpu/sgx/virt.c
+3 -2
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>
@@ -381,7 +382,7 @@ 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)
@@ -450,4 +451,4 @@ 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);
arch/x86/kernel/e820.c
+2 -1
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)
{
arch/x86/kernel/fpu/core.c
+11 -10
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)
arch/x86/kernel/fpu/xstate.c
+4 -3
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

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