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authorJakub Kicinski <kuba@kernel.org>2023-10-05 13:16:31 -0700
committerJakub Kicinski <kuba@kernel.org>2023-10-05 13:16:47 -0700
commit2606cf059c56bfb86d5d6bd0f41bd7eedefc8b0a (patch)
tree6bd918ad4fc55e677cc6ccb3212eab873c467c7f /arch/x86
parent49e7265fd098fdade2bbdd9331e6b914cda7fa83 (diff)
parentf291209eca5eba0b4704fa0832af57b12dbc1a02 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. No conflicts (or adjacent changes of note). Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/events/amd/core.c24
-rw-r--r--arch/x86/include/asm/kvm_host.h3
-rw-r--r--arch/x86/include/asm/linkage.h7
-rw-r--r--arch/x86/include/asm/mmu_context.h3
-rw-r--r--arch/x86/include/asm/pgtable.h8
-rw-r--r--arch/x86/include/asm/processor.h2
-rw-r--r--arch/x86/kernel/alternative.c9
-rw-r--r--arch/x86/kernel/callthunks.c1
-rw-r--r--arch/x86/kernel/cpu/amd.c28
-rw-r--r--arch/x86/kernel/cpu/bugs.c17
-rw-r--r--arch/x86/kernel/cpu/common.c2
-rw-r--r--arch/x86/kernel/cpu/sgx/encl.c30
-rw-r--r--arch/x86/kernel/kgdb.c1
-rw-r--r--arch/x86/kernel/process.c7
-rw-r--r--arch/x86/kernel/setup.c8
-rw-r--r--arch/x86/kernel/shstk.c33
-rw-r--r--arch/x86/kvm/mmu/mmu.c21
-rw-r--r--arch/x86/kvm/mmu/mmu_internal.h15
-rw-r--r--arch/x86/kvm/mmu/tdp_mmu.c152
-rw-r--r--arch/x86/kvm/mmu/tdp_mmu.h5
-rw-r--r--arch/x86/kvm/svm/sev.c34
-rw-r--r--arch/x86/kvm/svm/svm.c43
-rw-r--r--arch/x86/kvm/svm/svm.h1
-rw-r--r--arch/x86/kvm/x86.c5
-rw-r--r--arch/x86/lib/memcpy_64.S2
-rw-r--r--arch/x86/lib/memmove_64.S2
-rw-r--r--arch/x86/lib/memset_64.S2
27 files changed, 254 insertions, 211 deletions
diff --git a/arch/x86/events/amd/core.c b/arch/x86/events/amd/core.c
index abadd5f23425..e24976593a29 100644
--- a/arch/x86/events/amd/core.c
+++ b/arch/x86/events/amd/core.c
@@ -534,8 +534,12 @@ static void amd_pmu_cpu_reset(int cpu)
/* Clear enable bits i.e. PerfCntrGlobalCtl.PerfCntrEn */
wrmsrl(MSR_AMD64_PERF_CNTR_GLOBAL_CTL, 0);
- /* Clear overflow bits i.e. PerfCntrGLobalStatus.PerfCntrOvfl */
- wrmsrl(MSR_AMD64_PERF_CNTR_GLOBAL_STATUS_CLR, amd_pmu_global_cntr_mask);
+ /*
+ * Clear freeze and overflow bits i.e. PerfCntrGLobalStatus.LbrFreeze
+ * and PerfCntrGLobalStatus.PerfCntrOvfl
+ */
+ wrmsrl(MSR_AMD64_PERF_CNTR_GLOBAL_STATUS_CLR,
+ GLOBAL_STATUS_LBRS_FROZEN | amd_pmu_global_cntr_mask);
}
static int amd_pmu_cpu_prepare(int cpu)
@@ -570,6 +574,7 @@ static void amd_pmu_cpu_starting(int cpu)
int i, nb_id;
cpuc->perf_ctr_virt_mask = AMD64_EVENTSEL_HOSTONLY;
+ amd_pmu_cpu_reset(cpu);
if (!x86_pmu.amd_nb_constraints)
return;
@@ -591,8 +596,6 @@ static void amd_pmu_cpu_starting(int cpu)
cpuc->amd_nb->nb_id = nb_id;
cpuc->amd_nb->refcnt++;
-
- amd_pmu_cpu_reset(cpu);
}
static void amd_pmu_cpu_dead(int cpu)
@@ -601,6 +604,7 @@ static void amd_pmu_cpu_dead(int cpu)
kfree(cpuhw->lbr_sel);
cpuhw->lbr_sel = NULL;
+ amd_pmu_cpu_reset(cpu);
if (!x86_pmu.amd_nb_constraints)
return;
@@ -613,8 +617,6 @@ static void amd_pmu_cpu_dead(int cpu)
cpuhw->amd_nb = NULL;
}
-
- amd_pmu_cpu_reset(cpu);
}
static inline void amd_pmu_set_global_ctl(u64 ctl)
@@ -884,7 +886,7 @@ static int amd_pmu_v2_handle_irq(struct pt_regs *regs)
struct hw_perf_event *hwc;
struct perf_event *event;
int handled = 0, idx;
- u64 status, mask;
+ u64 reserved, status, mask;
bool pmu_enabled;
/*
@@ -909,6 +911,14 @@ static int amd_pmu_v2_handle_irq(struct pt_regs *regs)
status &= ~GLOBAL_STATUS_LBRS_FROZEN;
}
+ reserved = status & ~amd_pmu_global_cntr_mask;
+ if (reserved)
+ pr_warn_once("Reserved PerfCntrGlobalStatus bits are set (0x%llx), please consider updating microcode\n",
+ reserved);
+
+ /* Clear any reserved bits set by buggy microcode */
+ status &= amd_pmu_global_cntr_mask;
+
for (idx = 0; idx < x86_pmu.num_counters; idx++) {
if (!test_bit(idx, cpuc->active_mask))
continue;
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 1a4def36d5bb..17715cb8731d 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1419,7 +1419,6 @@ struct kvm_arch {
* the thread holds the MMU lock in write mode.
*/
spinlock_t tdp_mmu_pages_lock;
- struct workqueue_struct *tdp_mmu_zap_wq;
#endif /* CONFIG_X86_64 */
/*
@@ -1835,7 +1834,7 @@ void kvm_mmu_vendor_module_exit(void);
void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
int kvm_mmu_create(struct kvm_vcpu *vcpu);
-int kvm_mmu_init_vm(struct kvm *kvm);
+void kvm_mmu_init_vm(struct kvm *kvm);
void kvm_mmu_uninit_vm(struct kvm *kvm);
void kvm_mmu_after_set_cpuid(struct kvm_vcpu *vcpu);
diff --git a/arch/x86/include/asm/linkage.h b/arch/x86/include/asm/linkage.h
index 5ff49fd67732..571fe4d2d232 100644
--- a/arch/x86/include/asm/linkage.h
+++ b/arch/x86/include/asm/linkage.h
@@ -105,6 +105,13 @@
CFI_POST_PADDING \
SYM_FUNC_END(__cfi_##name)
+/* UML needs to be able to override memcpy() and friends for KASAN. */
+#ifdef CONFIG_UML
+# define SYM_FUNC_ALIAS_MEMFUNC SYM_FUNC_ALIAS_WEAK
+#else
+# define SYM_FUNC_ALIAS_MEMFUNC SYM_FUNC_ALIAS
+#endif
+
/* SYM_TYPED_FUNC_START -- use for indirectly called globals, w/ CFI type */
#define SYM_TYPED_FUNC_START(name) \
SYM_TYPED_START(name, SYM_L_GLOBAL, SYM_F_ALIGN) \
diff --git a/arch/x86/include/asm/mmu_context.h b/arch/x86/include/asm/mmu_context.h
index 416901d406f8..8dac45a2c7fc 100644
--- a/arch/x86/include/asm/mmu_context.h
+++ b/arch/x86/include/asm/mmu_context.h
@@ -186,8 +186,7 @@ do { \
#else
#define deactivate_mm(tsk, mm) \
do { \
- if (!tsk->vfork_done) \
- shstk_free(tsk); \
+ shstk_free(tsk); \
load_gs_index(0); \
loadsegment(fs, 0); \
} while (0)
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index d6ad98ca1288..e02b179ec659 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -955,6 +955,14 @@ static inline int pte_same(pte_t a, pte_t b)
return a.pte == b.pte;
}
+static inline pte_t pte_next_pfn(pte_t pte)
+{
+ if (__pte_needs_invert(pte_val(pte)))
+ return __pte(pte_val(pte) - (1UL << PFN_PTE_SHIFT));
+ return __pte(pte_val(pte) + (1UL << PFN_PTE_SHIFT));
+}
+#define pte_next_pfn pte_next_pfn
+
static inline int pte_present(pte_t a)
{
return pte_flags(a) & (_PAGE_PRESENT | _PAGE_PROTNONE);
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 0086920cda06..a3669a7774ed 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -683,13 +683,11 @@ extern u16 get_llc_id(unsigned int cpu);
#ifdef CONFIG_CPU_SUP_AMD
extern u32 amd_get_nodes_per_socket(void);
extern u32 amd_get_highest_perf(void);
-extern bool cpu_has_ibpb_brtype_microcode(void);
extern void amd_clear_divider(void);
extern void amd_check_microcode(void);
#else
static inline u32 amd_get_nodes_per_socket(void) { return 0; }
static inline u32 amd_get_highest_perf(void) { return 0; }
-static inline bool cpu_has_ibpb_brtype_microcode(void) { return false; }
static inline void amd_clear_divider(void) { }
static inline void amd_check_microcode(void) { }
#endif
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index a5ead6a6d233..517ee01503be 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -720,13 +720,8 @@ void __init_or_module noinline apply_returns(s32 *start, s32 *end)
{
s32 *s;
- /*
- * Do not patch out the default return thunks if those needed are the
- * ones generated by the compiler.
- */
- if (cpu_feature_enabled(X86_FEATURE_RETHUNK) &&
- (x86_return_thunk == __x86_return_thunk))
- return;
+ if (cpu_feature_enabled(X86_FEATURE_RETHUNK))
+ static_call_force_reinit();
for (s = start; s < end; s++) {
void *dest = NULL, *addr = (void *)s + *s;
diff --git a/arch/x86/kernel/callthunks.c b/arch/x86/kernel/callthunks.c
index c06bfc086565..faa9f2299848 100644
--- a/arch/x86/kernel/callthunks.c
+++ b/arch/x86/kernel/callthunks.c
@@ -272,7 +272,6 @@ void __init callthunks_patch_builtin_calls(void)
pr_info("Setting up call depth tracking\n");
mutex_lock(&text_mutex);
callthunks_setup(&cs, &builtin_coretext);
- static_call_force_reinit();
thunks_initialized = true;
mutex_unlock(&text_mutex);
}
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index dd8379d84445..03ef962a6992 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -766,6 +766,15 @@ static void early_init_amd(struct cpuinfo_x86 *c)
if (cpu_has(c, X86_FEATURE_TOPOEXT))
smp_num_siblings = ((cpuid_ebx(0x8000001e) >> 8) & 0xff) + 1;
+
+ if (!cpu_has(c, X86_FEATURE_HYPERVISOR) && !cpu_has(c, X86_FEATURE_IBPB_BRTYPE)) {
+ if (c->x86 == 0x17 && boot_cpu_has(X86_FEATURE_AMD_IBPB))
+ setup_force_cpu_cap(X86_FEATURE_IBPB_BRTYPE);
+ else if (c->x86 >= 0x19 && !wrmsrl_safe(MSR_IA32_PRED_CMD, PRED_CMD_SBPB)) {
+ setup_force_cpu_cap(X86_FEATURE_IBPB_BRTYPE);
+ setup_force_cpu_cap(X86_FEATURE_SBPB);
+ }
+ }
}
static void init_amd_k8(struct cpuinfo_x86 *c)
@@ -1301,25 +1310,6 @@ void amd_check_microcode(void)
on_each_cpu(zenbleed_check_cpu, NULL, 1);
}
-bool cpu_has_ibpb_brtype_microcode(void)
-{
- switch (boot_cpu_data.x86) {
- /* Zen1/2 IBPB flushes branch type predictions too. */
- case 0x17:
- return boot_cpu_has(X86_FEATURE_AMD_IBPB);
- case 0x19:
- /* Poke the MSR bit on Zen3/4 to check its presence. */
- if (!wrmsrl_safe(MSR_IA32_PRED_CMD, PRED_CMD_SBPB)) {
- setup_force_cpu_cap(X86_FEATURE_SBPB);
- return true;
- } else {
- return false;
- }
- default:
- return false;
- }
-}
-
/*
* Issue a DIV 0/1 insn to clear any division data from previous DIV
* operations.
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index f081d26616ac..10499bcd4e39 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -2404,27 +2404,16 @@ early_param("spec_rstack_overflow", srso_parse_cmdline);
static void __init srso_select_mitigation(void)
{
- bool has_microcode;
+ bool has_microcode = boot_cpu_has(X86_FEATURE_IBPB_BRTYPE);
if (!boot_cpu_has_bug(X86_BUG_SRSO) || cpu_mitigations_off())
goto pred_cmd;
- /*
- * The first check is for the kernel running as a guest in order
- * for guests to verify whether IBPB is a viable mitigation.
- */
- has_microcode = boot_cpu_has(X86_FEATURE_IBPB_BRTYPE) || cpu_has_ibpb_brtype_microcode();
if (!has_microcode) {
pr_warn("IBPB-extending microcode not applied!\n");
pr_warn(SRSO_NOTICE);
} else {
/*
- * Enable the synthetic (even if in a real CPUID leaf)
- * flags for guests.
- */
- setup_force_cpu_cap(X86_FEATURE_IBPB_BRTYPE);
-
- /*
* Zen1/2 with SMT off aren't vulnerable after the right
* IBPB microcode has been applied.
*/
@@ -2444,7 +2433,7 @@ static void __init srso_select_mitigation(void)
switch (srso_cmd) {
case SRSO_CMD_OFF:
- return;
+ goto pred_cmd;
case SRSO_CMD_MICROCODE:
if (has_microcode) {
@@ -2717,7 +2706,7 @@ static ssize_t srso_show_state(char *buf)
return sysfs_emit(buf, "%s%s\n",
srso_strings[srso_mitigation],
- (cpu_has_ibpb_brtype_microcode() ? "" : ", no microcode"));
+ boot_cpu_has(X86_FEATURE_IBPB_BRTYPE) ? "" : ", no microcode");
}
static ssize_t gds_show_state(char *buf)
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 382d4e6b848d..4e5ffc8b0e46 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -1303,7 +1303,7 @@ static const struct x86_cpu_id cpu_vuln_blacklist[] __initconst = {
VULNBL_AMD(0x15, RETBLEED),
VULNBL_AMD(0x16, RETBLEED),
VULNBL_AMD(0x17, RETBLEED | SMT_RSB | SRSO),
- VULNBL_HYGON(0x18, RETBLEED | SMT_RSB),
+ VULNBL_HYGON(0x18, RETBLEED | SMT_RSB | SRSO),
VULNBL_AMD(0x19, SRSO),
{}
};
diff --git a/arch/x86/kernel/cpu/sgx/encl.c b/arch/x86/kernel/cpu/sgx/encl.c
index 91fa70e51004..279148e72459 100644
--- a/arch/x86/kernel/cpu/sgx/encl.c
+++ b/arch/x86/kernel/cpu/sgx/encl.c
@@ -235,6 +235,21 @@ static struct sgx_epc_page *sgx_encl_eldu(struct sgx_encl_page *encl_page,
return epc_page;
}
+/*
+ * Ensure the SECS page is not swapped out. Must be called with encl->lock
+ * to protect the enclave states including SECS and ensure the SECS page is
+ * not swapped out again while being used.
+ */
+static struct sgx_epc_page *sgx_encl_load_secs(struct sgx_encl *encl)
+{
+ struct sgx_epc_page *epc_page = encl->secs.epc_page;
+
+ if (!epc_page)
+ epc_page = sgx_encl_eldu(&encl->secs, NULL);
+
+ return epc_page;
+}
+
static struct sgx_encl_page *__sgx_encl_load_page(struct sgx_encl *encl,
struct sgx_encl_page *entry)
{
@@ -248,11 +263,9 @@ static struct sgx_encl_page *__sgx_encl_load_page(struct sgx_encl *encl,
return entry;
}
- if (!(encl->secs.epc_page)) {
- epc_page = sgx_encl_eldu(&encl->secs, NULL);
- if (IS_ERR(epc_page))
- return ERR_CAST(epc_page);
- }
+ epc_page = sgx_encl_load_secs(encl);
+ if (IS_ERR(epc_page))
+ return ERR_CAST(epc_page);
epc_page = sgx_encl_eldu(entry, encl->secs.epc_page);
if (IS_ERR(epc_page))
@@ -339,6 +352,13 @@ static vm_fault_t sgx_encl_eaug_page(struct vm_area_struct *vma,
mutex_lock(&encl->lock);
+ epc_page = sgx_encl_load_secs(encl);
+ if (IS_ERR(epc_page)) {
+ if (PTR_ERR(epc_page) == -EBUSY)
+ vmret = VM_FAULT_NOPAGE;
+ goto err_out_unlock;
+ }
+
epc_page = sgx_alloc_epc_page(encl_page, false);
if (IS_ERR(epc_page)) {
if (PTR_ERR(epc_page) == -EBUSY)
diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
index 3a43a2dee658..9c9faa1634fb 100644
--- a/arch/x86/kernel/kgdb.c
+++ b/arch/x86/kernel/kgdb.c
@@ -695,7 +695,6 @@ void kgdb_arch_exit(void)
}
/**
- *
* kgdb_skipexception - Bail out of KGDB when we've been triggered.
* @exception: Exception vector number
* @regs: Current &struct pt_regs.
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 9f0909142a0a..b6f4e8399fca 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -257,13 +257,6 @@ int copy_thread(struct task_struct *p, const struct kernel_clone_args *args)
if (!ret && unlikely(test_tsk_thread_flag(current, TIF_IO_BITMAP)))
io_bitmap_share(p);
- /*
- * If copy_thread() if failing, don't leak the shadow stack possibly
- * allocated in shstk_alloc_thread_stack() above.
- */
- if (ret)
- shstk_free(p);
-
return ret;
}
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index b9145a63da77..b098b1fa2470 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -358,15 +358,11 @@ static void __init add_early_ima_buffer(u64 phys_addr)
#if defined(CONFIG_HAVE_IMA_KEXEC) && !defined(CONFIG_OF_FLATTREE)
int __init ima_free_kexec_buffer(void)
{
- int rc;
-
if (!ima_kexec_buffer_size)
return -ENOENT;
- rc = memblock_phys_free(ima_kexec_buffer_phys,
- ima_kexec_buffer_size);
- if (rc)
- return rc;
+ memblock_free_late(ima_kexec_buffer_phys,
+ ima_kexec_buffer_size);
ima_kexec_buffer_phys = 0;
ima_kexec_buffer_size = 0;
diff --git a/arch/x86/kernel/shstk.c b/arch/x86/kernel/shstk.c
index fd689921a1db..59e15dd8d0f8 100644
--- a/arch/x86/kernel/shstk.c
+++ b/arch/x86/kernel/shstk.c
@@ -205,10 +205,21 @@ unsigned long shstk_alloc_thread_stack(struct task_struct *tsk, unsigned long cl
return 0;
/*
- * For CLONE_VM, except vfork, the child needs a separate shadow
+ * For CLONE_VFORK the child will share the parents shadow stack.
+ * Make sure to clear the internal tracking of the thread shadow
+ * stack so the freeing logic run for child knows to leave it alone.
+ */
+ if (clone_flags & CLONE_VFORK) {
+ shstk->base = 0;
+ shstk->size = 0;
+ return 0;
+ }
+
+ /*
+ * For !CLONE_VM the child will use a copy of the parents shadow
* stack.
*/
- if ((clone_flags & (CLONE_VFORK | CLONE_VM)) != CLONE_VM)
+ if (!(clone_flags & CLONE_VM))
return 0;
size = adjust_shstk_size(stack_size);
@@ -408,7 +419,25 @@ void shstk_free(struct task_struct *tsk)
if (!tsk->mm || tsk->mm != current->mm)
return;
+ /*
+ * If shstk->base is NULL, then this task is not managing its
+ * own shadow stack (CLONE_VFORK). So skip freeing it.
+ */
+ if (!shstk->base)
+ return;
+
+ /*
+ * shstk->base is NULL for CLONE_VFORK child tasks, and so is
+ * normal. But size = 0 on a shstk->base is not normal and
+ * indicated an attempt to free the thread shadow stack twice.
+ * Warn about it.
+ */
+ if (WARN_ON(!shstk->size))
+ return;
+
unmap_shadow_stack(shstk->base, shstk->size);
+
+ shstk->size = 0;
}
static int wrss_control(bool enable)
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index e1d011c67cc6..f7901cb4d2fa 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -6167,20 +6167,15 @@ static bool kvm_has_zapped_obsolete_pages(struct kvm *kvm)
return unlikely(!list_empty_careful(&kvm->arch.zapped_obsolete_pages));
}
-int kvm_mmu_init_vm(struct kvm *kvm)
+void kvm_mmu_init_vm(struct kvm *kvm)
{
- int r;
-
INIT_LIST_HEAD(&kvm->arch.active_mmu_pages);
INIT_LIST_HEAD(&kvm->arch.zapped_obsolete_pages);
INIT_LIST_HEAD(&kvm->arch.possible_nx_huge_pages);
spin_lock_init(&kvm->arch.mmu_unsync_pages_lock);
- if (tdp_mmu_enabled) {
- r = kvm_mmu_init_tdp_mmu(kvm);
- if (r < 0)
- return r;
- }
+ if (tdp_mmu_enabled)
+ kvm_mmu_init_tdp_mmu(kvm);
kvm->arch.split_page_header_cache.kmem_cache = mmu_page_header_cache;
kvm->arch.split_page_header_cache.gfp_zero = __GFP_ZERO;
@@ -6189,8 +6184,6 @@ int kvm_mmu_init_vm(struct kvm *kvm)
kvm->arch.split_desc_cache.kmem_cache = pte_list_desc_cache;
kvm->arch.split_desc_cache.gfp_zero = __GFP_ZERO;
-
- return 0;
}
static void mmu_free_vm_memory_caches(struct kvm *kvm)
@@ -6246,7 +6239,6 @@ static bool kvm_rmap_zap_gfn_range(struct kvm *kvm, gfn_t gfn_start, gfn_t gfn_e
void kvm_zap_gfn_range(struct kvm *kvm, gfn_t gfn_start, gfn_t gfn_end)
{
bool flush;
- int i;
if (WARN_ON_ONCE(gfn_end <= gfn_start))
return;
@@ -6257,11 +6249,8 @@ void kvm_zap_gfn_range(struct kvm *kvm, gfn_t gfn_start, gfn_t gfn_end)
flush = kvm_rmap_zap_gfn_range(kvm, gfn_start, gfn_end);
- if (tdp_mmu_enabled) {
- for (i = 0; i < KVM_ADDRESS_SPACE_NUM; i++)
- flush = kvm_tdp_mmu_zap_leafs(kvm, i, gfn_start,
- gfn_end, true, flush);
- }
+ if (tdp_mmu_enabled)
+ flush = kvm_tdp_mmu_zap_leafs(kvm, gfn_start, gfn_end, flush);
if (flush)
kvm_flush_remote_tlbs_range(kvm, gfn_start, gfn_end - gfn_start);
diff --git a/arch/x86/kvm/mmu/mmu_internal.h b/arch/x86/kvm/mmu/mmu_internal.h
index b102014e2c60..decc1f153669 100644
--- a/arch/x86/kvm/mmu/mmu_internal.h
+++ b/arch/x86/kvm/mmu/mmu_internal.h
@@ -58,7 +58,12 @@ struct kvm_mmu_page {
bool tdp_mmu_page;
bool unsync;
- u8 mmu_valid_gen;
+ union {
+ u8 mmu_valid_gen;
+
+ /* Only accessed under slots_lock. */
+ bool tdp_mmu_scheduled_root_to_zap;
+ };
/*
* The shadow page can't be replaced by an equivalent huge page
@@ -100,13 +105,7 @@ struct kvm_mmu_page {
struct kvm_rmap_head parent_ptes; /* rmap pointers to parent sptes */
tdp_ptep_t ptep;
};
- union {
- DECLARE_BITMAP(unsync_child_bitmap, 512);
- struct {
- struct work_struct tdp_mmu_async_work;
- void *tdp_mmu_async_data;
- };
- };
+ DECLARE_BITMAP(unsync_child_bitmap, 512);
/*
* Tracks shadow pages that, if zapped, would allow KVM to create an NX
diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c
index 6c63f2d1675f..6cd4dd631a2f 100644
--- a/arch/x86/kvm/mmu/tdp_mmu.c
+++ b/arch/x86/kvm/mmu/tdp_mmu.c
@@ -12,18 +12,10 @@
#include <trace/events/kvm.h>
/* Initializes the TDP MMU for the VM, if enabled. */
-int kvm_mmu_init_tdp_mmu(struct kvm *kvm)
+void kvm_mmu_init_tdp_mmu(struct kvm *kvm)
{
- struct workqueue_struct *wq;
-
- wq = alloc_workqueue("kvm", WQ_UNBOUND|WQ_MEM_RECLAIM|WQ_CPU_INTENSIVE, 0);
- if (!wq)
- return -ENOMEM;
-
INIT_LIST_HEAD(&kvm->arch.tdp_mmu_roots);
spin_lock_init(&kvm->arch.tdp_mmu_pages_lock);
- kvm->arch.tdp_mmu_zap_wq = wq;
- return 1;
}
/* Arbitrarily returns true so that this may be used in if statements. */
@@ -46,20 +38,15 @@ void kvm_mmu_uninit_tdp_mmu(struct kvm *kvm)
* ultimately frees all roots.
*/
kvm_tdp_mmu_invalidate_all_roots(kvm);
-
- /*
- * Destroying a workqueue also first flushes the workqueue, i.e. no
- * need to invoke kvm_tdp_mmu_zap_invalidated_roots().
- */
- destroy_workqueue(kvm->arch.tdp_mmu_zap_wq);
+ kvm_tdp_mmu_zap_invalidated_roots(kvm);
WARN_ON(atomic64_read(&kvm->arch.tdp_mmu_pages));
WARN_ON(!list_empty(&kvm->arch.tdp_mmu_roots));
/*
* Ensure that all the outstanding RCU callbacks to free shadow pages
- * can run before the VM is torn down. Work items on tdp_mmu_zap_wq
- * can call kvm_tdp_mmu_put_root and create new callbacks.
+ * can run before the VM is torn down. Putting the last reference to
+ * zapped roots will create new callbacks.
*/
rcu_barrier();
}
@@ -86,46 +73,6 @@ static void tdp_mmu_free_sp_rcu_callback(struct rcu_head *head)
tdp_mmu_free_sp(sp);
}
-static void tdp_mmu_zap_root(struct kvm *kvm, struct kvm_mmu_page *root,
- bool shared);
-
-static void tdp_mmu_zap_root_work(struct work_struct *work)
-{
- struct kvm_mmu_page *root = container_of(work, struct kvm_mmu_page,
- tdp_mmu_async_work);
- struct kvm *kvm = root->tdp_mmu_async_data;
-
- read_lock(&kvm->mmu_lock);
-
- /*
- * A TLB flush is not necessary as KVM performs a local TLB flush when
- * allocating a new root (see kvm_mmu_load()), and when migrating vCPU
- * to a different pCPU. Note, the local TLB flush on reuse also
- * invalidates any paging-structure-cache entries, i.e. TLB entries for
- * intermediate paging structures, that may be zapped, as such entries
- * are associated with the ASID on both VMX and SVM.
- */
- tdp_mmu_zap_root(kvm, root, true);
-
- /*
- * Drop the refcount using kvm_tdp_mmu_put_root() to test its logic for
- * avoiding an infinite loop. By design, the root is reachable while
- * it's being asynchronously zapped, thus a different task can put its
- * last reference, i.e. flowing through kvm_tdp_mmu_put_root() for an
- * asynchronously zapped root is unavoidable.
- */
- kvm_tdp_mmu_put_root(kvm, root, true);
-
- read_unlock(&kvm->mmu_lock);
-}
-
-static void tdp_mmu_schedule_zap_root(struct kvm *kvm, struct kvm_mmu_page *root)
-{
- root->tdp_mmu_async_data = kvm;
- INIT_WORK(&root->tdp_mmu_async_work, tdp_mmu_zap_root_work);
- queue_work(kvm->arch.tdp_mmu_zap_wq, &root->tdp_mmu_async_work);
-}
-
void kvm_tdp_mmu_put_root(struct kvm *kvm, struct kvm_mmu_page *root,
bool shared)
{
@@ -211,8 +158,12 @@ static struct kvm_mmu_page *tdp_mmu_next_root(struct kvm *kvm,
#define for_each_valid_tdp_mmu_root_yield_safe(_kvm, _root, _as_id, _shared) \
__for_each_tdp_mmu_root_yield_safe(_kvm, _root, _as_id, _shared, true)
-#define for_each_tdp_mmu_root_yield_safe(_kvm, _root, _as_id) \
- __for_each_tdp_mmu_root_yield_safe(_kvm, _root, _as_id, false, false)
+#define for_each_tdp_mmu_root_yield_safe(_kvm, _root, _shared) \
+ for (_root = tdp_mmu_next_root(_kvm, NULL, _shared, false); \
+ _root; \
+ _root = tdp_mmu_next_root(_kvm, _root, _shared, false)) \
+ if (!kvm_lockdep_assert_mmu_lock_held(_kvm, _shared)) { \
+ } else
/*
* Iterate over all TDP MMU roots. Requires that mmu_lock be held for write,
@@ -292,7 +243,7 @@ hpa_t kvm_tdp_mmu_get_vcpu_root_hpa(struct kvm_vcpu *vcpu)
* by a memslot update or by the destruction of the VM. Initialize the
* refcount to two; one reference for the vCPU, and one reference for
* the TDP MMU itself, which is held until the root is invalidated and
- * is ultimately put by tdp_mmu_zap_root_work().
+ * is ultimately put by kvm_tdp_mmu_zap_invalidated_roots().
*/
refcount_set(&root->tdp_mmu_root_count, 2);
@@ -877,13 +828,12 @@ static bool tdp_mmu_zap_leafs(struct kvm *kvm, struct kvm_mmu_page *root,
* true if a TLB flush is needed before releasing the MMU lock, i.e. if one or
* more SPTEs were zapped since the MMU lock was last acquired.
*/
-bool kvm_tdp_mmu_zap_leafs(struct kvm *kvm, int as_id, gfn_t start, gfn_t end,
- bool can_yield, bool flush)
+bool kvm_tdp_mmu_zap_leafs(struct kvm *kvm, gfn_t start, gfn_t end, bool flush)
{
struct kvm_mmu_page *root;
- for_each_tdp_mmu_root_yield_safe(kvm, root, as_id)
- flush = tdp_mmu_zap_leafs(kvm, root, start, end, can_yield, flush);
+ for_each_tdp_mmu_root_yield_safe(kvm, root, false)
+ flush = tdp_mmu_zap_leafs(kvm, root, start, end, true, flush);
return flush;
}
@@ -891,7 +841,6 @@ bool kvm_tdp_mmu_zap_leafs(struct kvm *kvm, int as_id, gfn_t start, gfn_t end,
void kvm_tdp_mmu_zap_all(struct kvm *kvm)
{
struct kvm_mmu_page *root;
- int i;
/*
* Zap all roots, including invalid roots, as all SPTEs must be dropped
@@ -905,10 +854,8 @@ void kvm_tdp_mmu_zap_all(struct kvm *kvm)
* is being destroyed or the userspace VMM has exited. In both cases,
* KVM_RUN is unreachable, i.e. no vCPUs will ever service the request.
*/
- for (i = 0; i < KVM_ADDRESS_SPACE_NUM; i++) {
- for_each_tdp_mmu_root_yield_safe(kvm, root, i)
- tdp_mmu_zap_root(kvm, root, false);
- }
+ for_each_tdp_mmu_root_yield_safe(kvm, root, false)
+ tdp_mmu_zap_root(kvm, root, false);
}
/*
@@ -917,18 +864,47 @@ void kvm_tdp_mmu_zap_all(struct kvm *kvm)
*/
void kvm_tdp_mmu_zap_invalidated_roots(struct kvm *kvm)
{
- flush_workqueue(kvm->arch.tdp_mmu_zap_wq);
+ struct kvm_mmu_page *root;
+
+ read_lock(&kvm->mmu_lock);
+
+ for_each_tdp_mmu_root_yield_safe(kvm, root, true) {
+ if (!root->tdp_mmu_scheduled_root_to_zap)
+ continue;
+
+ root->tdp_mmu_scheduled_root_to_zap = false;
+ KVM_BUG_ON(!root->role.invalid, kvm);
+
+ /*
+ * A TLB flush is not necessary as KVM performs a local TLB
+ * flush when allocating a new root (see kvm_mmu_load()), and
+ * when migrating a vCPU to a different pCPU. Note, the local
+ * TLB flush on reuse also invalidates paging-structure-cache
+ * entries, i.e. TLB entries for intermediate paging structures,
+ * that may be zapped, as such entries are associated with the
+ * ASID on both VMX and SVM.
+ */
+ tdp_mmu_zap_root(kvm, root, true);
+
+ /*
+ * The referenced needs to be put *after* zapping the root, as
+ * the root must be reachable by mmu_notifiers while it's being
+ * zapped
+ */
+ kvm_tdp_mmu_put_root(kvm, root, true);
+ }
+
+ read_unlock(&kvm->mmu_lock);
}
/*
* Mark each TDP MMU root as invalid to prevent vCPUs from reusing a root that
* is about to be zapped, e.g. in response to a memslots update. The actual
- * zapping is performed asynchronously. Using a separate workqueue makes it
- * easy to ensure that the destruction is performed before the "fast zap"
- * completes, without keeping a separate list of invalidated roots; the list is
- * effectively the list of work items in the workqueue.
+ * zapping is done separately so that it happens with mmu_lock with read,
+ * whereas invalidating roots must be done with mmu_lock held for write (unless
+ * the VM is being destroyed).
*
- * Note, the asynchronous worker is gifted the TDP MMU's reference.
+ * Note, kvm_tdp_mmu_zap_invalidated_roots() is gifted the TDP MMU's reference.
* See kvm_tdp_mmu_get_vcpu_root_hpa().
*/
void kvm_tdp_mmu_invalidate_all_roots(struct kvm *kvm)
@@ -953,19 +929,20 @@ void kvm_tdp_mmu_invalidate_all_roots(struct kvm *kvm)
/*
* As above, mmu_lock isn't held when destroying the VM! There can't
* be other references to @kvm, i.e. nothing else can invalidate roots
- * or be consuming roots, but walking the list of roots does need to be
- * guarded against roots being deleted by the asynchronous zap worker.
+ * or get/put references to roots.
*/
- rcu_read_lock();
-
- list_for_each_entry_rcu(root, &kvm->arch.tdp_mmu_roots, link) {
+ list_for_each_entry(root, &kvm->arch.tdp_mmu_roots, link) {
+ /*
+ * Note, invalid roots can outlive a memslot update! Invalid
+ * roots must be *zapped* before the memslot update completes,
+ * but a different task can acquire a reference and keep the
+ * root alive after its been zapped.
+ */
if (!root->role.invalid) {
+ root->tdp_mmu_scheduled_root_to_zap = true;
root->role.invalid = true;
- tdp_mmu_schedule_zap_root(kvm, root);
}
}
-
- rcu_read_unlock();
}
/*
@@ -1146,8 +1123,13 @@ retry:
bool kvm_tdp_mmu_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range,
bool flush)
{
- return kvm_tdp_mmu_zap_leafs(kvm, range->slot->as_id, range->start,
- range->end, range->may_block, flush);
+ struct kvm_mmu_page *root;
+
+ __for_each_tdp_mmu_root_yield_safe(kvm, root, range->slot->as_id, false, false)
+ flush = tdp_mmu_zap_leafs(kvm, root, range->start, range->end,
+ range->may_block, flush);
+
+ return flush;
}
typedef bool (*tdp_handler_t)(struct kvm *kvm, struct tdp_iter *iter,
diff --git a/arch/x86/kvm/mmu/tdp_mmu.h b/arch/x86/kvm/mmu/tdp_mmu.h
index 0a63b1afabd3..733a3aef3a96 100644
--- a/arch/x86/kvm/mmu/tdp_mmu.h
+++ b/arch/x86/kvm/mmu/tdp_mmu.h
@@ -7,7 +7,7 @@
#include "spte.h"
-int kvm_mmu_init_tdp_mmu(struct kvm *kvm);
+void kvm_mmu_init_tdp_mmu(struct kvm *kvm);
void kvm_mmu_uninit_tdp_mmu(struct kvm *kvm);
hpa_t kvm_tdp_mmu_get_vcpu_root_hpa(struct kvm_vcpu *vcpu);
@@ -20,8 +20,7 @@ __must_check static inline bool kvm_tdp_mmu_get_root(struct kvm_mmu_page *root)
void kvm_tdp_mmu_put_root(struct kvm *kvm, struct kvm_mmu_page *root,
bool shared);
-bool kvm_tdp_mmu_zap_leafs(struct kvm *kvm, int as_id, gfn_t start,
- gfn_t end, bool can_yield, bool flush);
+bool kvm_tdp_mmu_zap_leafs(struct kvm *kvm, gfn_t start, gfn_t end, bool flush);
bool kvm_tdp_mmu_zap_sp(struct kvm *kvm, struct kvm_mmu_page *sp);
void kvm_tdp_mmu_zap_all(struct kvm *kvm);
void kvm_tdp_mmu_invalidate_all_roots(struct kvm *kvm);
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index b9a0a939d59f..4900c078045a 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -2962,6 +2962,32 @@ int sev_es_string_io(struct vcpu_svm *svm, int size, unsigned int port, int in)
count, in);
}
+static void sev_es_vcpu_after_set_cpuid(struct vcpu_svm *svm)
+{
+ struct kvm_vcpu *vcpu = &svm->vcpu;
+
+ if (boot_cpu_has(X86_FEATURE_V_TSC_AUX)) {
+ bool v_tsc_aux = guest_cpuid_has(vcpu, X86_FEATURE_RDTSCP) ||
+ guest_cpuid_has(vcpu, X86_FEATURE_RDPID);
+
+ set_msr_interception(vcpu, svm->msrpm, MSR_TSC_AUX, v_tsc_aux, v_tsc_aux);
+ }
+}
+
+void sev_vcpu_after_set_cpuid(struct vcpu_svm *svm)
+{
+ struct kvm_vcpu *vcpu = &svm->vcpu;
+ struct kvm_cpuid_entry2 *best;
+
+ /* For sev guests, the memory encryption bit is not reserved in CR3. */
+ best = kvm_find_cpuid_entry(vcpu, 0x8000001F);
+ if (best)
+ vcpu->arch.reserved_gpa_bits &= ~(1UL << (best->ebx & 0x3f));
+
+ if (sev_es_guest(svm->vcpu.kvm))
+ sev_es_vcpu_after_set_cpuid(svm);
+}
+
static void sev_es_init_vmcb(struct vcpu_svm *svm)
{
struct vmcb *vmcb = svm->vmcb01.ptr;
@@ -3024,14 +3050,6 @@ static void sev_es_init_vmcb(struct vcpu_svm *svm)
set_msr_interception(vcpu, svm->msrpm, MSR_IA32_LASTBRANCHTOIP, 1, 1);
set_msr_interception(vcpu, svm->msrpm, MSR_IA32_LASTINTFROMIP, 1, 1);
set_msr_interception(vcpu, svm->msrpm, MSR_IA32_LASTINTTOIP, 1, 1);
-
- if (boot_cpu_has(X86_FEATURE_V_TSC_AUX) &&
- (guest_cpuid_has(&svm->vcpu, X86_FEATURE_RDTSCP) ||
- guest_cpuid_has(&svm->vcpu, X86_FEATURE_RDPID))) {
- set_msr_interception(vcpu, svm->msrpm, MSR_TSC_AUX, 1, 1);
- if (guest_cpuid_has(&svm->vcpu, X86_FEATURE_RDTSCP))
- svm_clr_intercept(svm, INTERCEPT_RDTSCP);
- }
}
void sev_init_vmcb(struct vcpu_svm *svm)
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index f283eb47f6ac..9507df93f410 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -683,6 +683,21 @@ static int svm_hardware_enable(void)
amd_pmu_enable_virt();
+ /*
+ * If TSC_AUX virtualization is supported, TSC_AUX becomes a swap type
+ * "B" field (see sev_es_prepare_switch_to_guest()) for SEV-ES guests.
+ * Since Linux does not change the value of TSC_AUX once set, prime the
+ * TSC_AUX field now to avoid a RDMSR on every vCPU run.
+ */
+ if (boot_cpu_has(X86_FEATURE_V_TSC_AUX)) {
+ struct sev_es_save_area *hostsa;
+ u32 msr_hi;
+
+ hostsa = (struct sev_es_save_area *)(page_address(sd->save_area) + 0x400);
+
+ rdmsr(MSR_TSC_AUX, hostsa->tsc_aux, msr_hi);
+ }
+
return 0;
}
@@ -1532,7 +1547,14 @@ static void svm_prepare_switch_to_guest(struct kvm_vcpu *vcpu)
if (tsc_scaling)
__svm_write_tsc_multiplier(vcpu->arch.tsc_scaling_ratio);
- if (likely(tsc_aux_uret_slot >= 0))
+ /*
+ * TSC_AUX is always virtualized for SEV-ES guests when the feature is
+ * available. The user return MSR support is not required in this case
+ * because TSC_AUX is restored on #VMEXIT from the host save area
+ * (which has been initialized in svm_hardware_enable()).
+ */
+ if (likely(tsc_aux_uret_slot >= 0) &&
+ (!boot_cpu_has(X86_FEATURE_V_TSC_AUX) || !sev_es_guest(vcpu->kvm)))
kvm_set_user_return_msr(tsc_aux_uret_slot, svm->tsc_aux, -1ull);
svm->guest_state_loaded = true;
@@ -3087,6 +3109,16 @@ static int svm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr)
break;
case MSR_TSC_AUX:
/*
+ * TSC_AUX is always virtualized for SEV-ES guests when the
+ * feature is available. The user return MSR support is not
+ * required in this case because TSC_AUX is restored on #VMEXIT
+ * from the host save area (which has been initialized in
+ * svm_hardware_enable()).
+ */
+ if (boot_cpu_has(X86_FEATURE_V_TSC_AUX) && sev_es_guest(vcpu->kvm))
+ break;
+
+ /*
* TSC_AUX is usually changed only during boot and never read
* directly. Intercept TSC_AUX instead of exposing it to the
* guest via direct_access_msrs, and switch it via user return.
@@ -4284,7 +4316,6 @@ static bool svm_has_emulated_msr(struct kvm *kvm, u32 index)
static void svm_vcpu_after_set_cpuid(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);
- struct kvm_cpuid_entry2 *best;
/*
* SVM doesn't provide a way to disable just XSAVES in the guest, KVM
@@ -4328,12 +4359,8 @@ static void svm_vcpu_after_set_cpuid(struct kvm_vcpu *vcpu)
set_msr_interception(vcpu, svm->msrpm, MSR_IA32_FLUSH_CMD, 0,
!!guest_cpuid_has(vcpu, X86_FEATURE_FLUSH_L1D));
- /* For sev guests, the memory encryption bit is not reserved in CR3. */
- if (sev_guest(vcpu->kvm)) {
- best = kvm_find_cpuid_entry(vcpu, 0x8000001F);
- if (best)
- vcpu->arch.reserved_gpa_bits &= ~(1UL << (best->ebx & 0x3f));
- }
+ if (sev_guest(vcpu->kvm))
+ sev_vcpu_after_set_cpuid(svm);
init_vmcb_after_set_cpuid(vcpu);
}
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index f41253958357..be67ab7fdd10 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -684,6 +684,7 @@ void __init sev_hardware_setup(void);
void sev_hardware_unsetup(void);
int sev_cpu_init(struct svm_cpu_data *sd);
void sev_init_vmcb(struct vcpu_svm *svm);
+void sev_vcpu_after_set_cpuid(struct vcpu_svm *svm);
void sev_free_vcpu(struct kvm_vcpu *vcpu);
int sev_handle_vmgexit(struct kvm_vcpu *vcpu);
int sev_es_string_io(struct vcpu_svm *svm, int size, unsigned int port, int in);
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 6c9c81e82e65..9f18b06bbda6 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -12308,9 +12308,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
if (ret)
goto out;
- ret = kvm_mmu_init_vm(kvm);
- if (ret)
- goto out_page_track;
+ kvm_mmu_init_vm(kvm);
ret = static_call(kvm_x86_vm_init)(kvm);
if (ret)
@@ -12355,7 +12353,6 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
out_uninit_mmu:
kvm_mmu_uninit_vm(kvm);
-out_page_track:
kvm_page_track_cleanup(kvm);
out:
return ret;
diff --git a/arch/x86/lib/memcpy_64.S b/arch/x86/lib/memcpy_64.S
index 8f95fb267caa..76697df8dfd5 100644
--- a/arch/x86/lib/memcpy_64.S
+++ b/arch/x86/lib/memcpy_64.S
@@ -40,7 +40,7 @@ SYM_TYPED_FUNC_START(__memcpy)
SYM_FUNC_END(__memcpy)
EXPORT_SYMBOL(__memcpy)
-SYM_FUNC_ALIAS(memcpy, __memcpy)
+SYM_FUNC_ALIAS_MEMFUNC(memcpy, __memcpy)
EXPORT_SYMBOL(memcpy)
SYM_FUNC_START_LOCAL(memcpy_orig)
diff --git a/arch/x86/lib/memmove_64.S b/arch/x86/lib/memmove_64.S
index 0559b206fb11..ccdf3a597045 100644
--- a/arch/x86/lib/memmove_64.S
+++ b/arch/x86/lib/memmove_64.S
@@ -212,5 +212,5 @@ SYM_FUNC_START(__memmove)
SYM_FUNC_END(__memmove)
EXPORT_SYMBOL(__memmove)
-SYM_FUNC_ALIAS(memmove, __memmove)
+SYM_FUNC_ALIAS_MEMFUNC(memmove, __memmove)
EXPORT_SYMBOL(memmove)
diff --git a/arch/x86/lib/memset_64.S b/arch/x86/lib/memset_64.S
index 7c59a704c458..3d818b849ec6 100644
--- a/arch/x86/lib/memset_64.S
+++ b/arch/x86/lib/memset_64.S
@@ -40,7 +40,7 @@ SYM_FUNC_START(__memset)
SYM_FUNC_END(__memset)
EXPORT_SYMBOL(__memset)
-SYM_FUNC_ALIAS(memset, __memset)
+SYM_FUNC_ALIAS_MEMFUNC(memset, __memset)
EXPORT_SYMBOL(memset)
SYM_FUNC_START_LOCAL(memset_orig)