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-rw-r--r--arch/powerpc/include/asm/exception-64s.h13
-rw-r--r--arch/powerpc/include/asm/feature-fixups.h10
-rw-r--r--arch/powerpc/kernel/entry_64.S2
-rw-r--r--arch/powerpc/kernel/exceptions-64s.S19
-rw-r--r--arch/powerpc/kernel/vmlinux.lds.S7
-rw-r--r--arch/powerpc/lib/feature-fixups.c24
-rw-r--r--arch/x86/entry/common.c10
-rw-r--r--arch/x86/include/asm/fpu/api.h15
-rw-r--r--arch/x86/include/asm/intel-family.h1
-rw-r--r--arch/x86/include/asm/msr.h4
-rw-r--r--arch/x86/include/asm/topology.h4
-rw-r--r--arch/x86/kernel/cpu/amd.c4
-rw-r--r--arch/x86/kernel/cpu/mce/core.c7
-rw-r--r--arch/x86/kernel/cpu/topology.c2
-rw-r--r--arch/x86/kernel/fpu/core.c9
-rw-r--r--arch/x86/kernel/sev-es.c14
-rw-r--r--arch/x86/kernel/smpboot.c19
-rw-r--r--arch/x86/lib/mmx_32.c20
18 files changed, 155 insertions, 29 deletions
diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h
index 1d32b174ab6a..c1a8aac01cf9 100644
--- a/arch/powerpc/include/asm/exception-64s.h
+++ b/arch/powerpc/include/asm/exception-64s.h
@@ -63,6 +63,12 @@
nop; \
nop;
+#define SCV_ENTRY_FLUSH_SLOT \
+ SCV_ENTRY_FLUSH_FIXUP_SECTION; \
+ nop; \
+ nop; \
+ nop;
+
/*
* r10 must be free to use, r13 must be paca
*/
@@ -71,6 +77,13 @@
ENTRY_FLUSH_SLOT
/*
+ * r10, ctr must be free to use, r13 must be paca
+ */
+#define SCV_INTERRUPT_TO_KERNEL \
+ STF_ENTRY_BARRIER_SLOT; \
+ SCV_ENTRY_FLUSH_SLOT
+
+/*
* Macros for annotating the expected destination of (h)rfid
*
* The nop instructions allow us to insert one or more instructions to flush the
diff --git a/arch/powerpc/include/asm/feature-fixups.h b/arch/powerpc/include/asm/feature-fixups.h
index f6d2acb57425..ac605fc369c4 100644
--- a/arch/powerpc/include/asm/feature-fixups.h
+++ b/arch/powerpc/include/asm/feature-fixups.h
@@ -240,6 +240,14 @@ label##3: \
FTR_ENTRY_OFFSET 957b-958b; \
.popsection;
+#define SCV_ENTRY_FLUSH_FIXUP_SECTION \
+957: \
+ .pushsection __scv_entry_flush_fixup,"a"; \
+ .align 2; \
+958: \
+ FTR_ENTRY_OFFSET 957b-958b; \
+ .popsection;
+
#define RFI_FLUSH_FIXUP_SECTION \
951: \
.pushsection __rfi_flush_fixup,"a"; \
@@ -273,10 +281,12 @@ label##3: \
extern long stf_barrier_fallback;
extern long entry_flush_fallback;
+extern long scv_entry_flush_fallback;
extern long __start___stf_entry_barrier_fixup, __stop___stf_entry_barrier_fixup;
extern long __start___stf_exit_barrier_fixup, __stop___stf_exit_barrier_fixup;
extern long __start___uaccess_flush_fixup, __stop___uaccess_flush_fixup;
extern long __start___entry_flush_fixup, __stop___entry_flush_fixup;
+extern long __start___scv_entry_flush_fixup, __stop___scv_entry_flush_fixup;
extern long __start___rfi_flush_fixup, __stop___rfi_flush_fixup;
extern long __start___barrier_nospec_fixup, __stop___barrier_nospec_fixup;
extern long __start__btb_flush_fixup, __stop__btb_flush_fixup;
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index aa1af139d947..33ddfeef4fe9 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -75,7 +75,7 @@ BEGIN_FTR_SECTION
bne .Ltabort_syscall
END_FTR_SECTION_IFSET(CPU_FTR_TM)
#endif
- INTERRUPT_TO_KERNEL
+ SCV_INTERRUPT_TO_KERNEL
mr r10,r1
ld r1,PACAKSAVE(r13)
std r10,0(r1)
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index e02ad6fefa46..6e53f7638737 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -2993,6 +2993,25 @@ TRAMP_REAL_BEGIN(entry_flush_fallback)
ld r11,PACA_EXRFI+EX_R11(r13)
blr
+/*
+ * The SCV entry flush happens with interrupts enabled, so it must disable
+ * to prevent EXRFI being clobbered by NMIs (e.g., soft_nmi_common). r10
+ * (containing LR) does not need to be preserved here because scv entry
+ * puts 0 in the pt_regs, CTR can be clobbered for the same reason.
+ */
+TRAMP_REAL_BEGIN(scv_entry_flush_fallback)
+ li r10,0
+ mtmsrd r10,1
+ lbz r10,PACAIRQHAPPENED(r13)
+ ori r10,r10,PACA_IRQ_HARD_DIS
+ stb r10,PACAIRQHAPPENED(r13)
+ std r11,PACA_EXRFI+EX_R11(r13)
+ L1D_DISPLACEMENT_FLUSH
+ ld r11,PACA_EXRFI+EX_R11(r13)
+ li r10,MSR_RI
+ mtmsrd r10,1
+ blr
+
TRAMP_REAL_BEGIN(rfi_flush_fallback)
SET_SCRATCH0(r13);
GET_PACA(r13);
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 4ab426b8b0e0..72fa3c00229a 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -146,6 +146,13 @@ SECTIONS
}
. = ALIGN(8);
+ __scv_entry_flush_fixup : AT(ADDR(__scv_entry_flush_fixup) - LOAD_OFFSET) {
+ __start___scv_entry_flush_fixup = .;
+ *(__scv_entry_flush_fixup)
+ __stop___scv_entry_flush_fixup = .;
+ }
+
+ . = ALIGN(8);
__stf_exit_barrier_fixup : AT(ADDR(__stf_exit_barrier_fixup) - LOAD_OFFSET) {
__start___stf_exit_barrier_fixup = .;
*(__stf_exit_barrier_fixup)
diff --git a/arch/powerpc/lib/feature-fixups.c b/arch/powerpc/lib/feature-fixups.c
index 47821055b94c..1fd31b4b0e13 100644
--- a/arch/powerpc/lib/feature-fixups.c
+++ b/arch/powerpc/lib/feature-fixups.c
@@ -290,9 +290,6 @@ void do_entry_flush_fixups(enum l1d_flush_type types)
long *start, *end;
int i;
- start = PTRRELOC(&__start___entry_flush_fixup);
- end = PTRRELOC(&__stop___entry_flush_fixup);
-
instrs[0] = 0x60000000; /* nop */
instrs[1] = 0x60000000; /* nop */
instrs[2] = 0x60000000; /* nop */
@@ -312,6 +309,8 @@ void do_entry_flush_fixups(enum l1d_flush_type types)
if (types & L1D_FLUSH_MTTRIG)
instrs[i++] = 0x7c12dba6; /* mtspr TRIG2,r0 (SPR #882) */
+ start = PTRRELOC(&__start___entry_flush_fixup);
+ end = PTRRELOC(&__stop___entry_flush_fixup);
for (i = 0; start < end; start++, i++) {
dest = (void *)start + *start;
@@ -328,6 +327,25 @@ void do_entry_flush_fixups(enum l1d_flush_type types)
patch_instruction((struct ppc_inst *)(dest + 2), ppc_inst(instrs[2]));
}
+ start = PTRRELOC(&__start___scv_entry_flush_fixup);
+ end = PTRRELOC(&__stop___scv_entry_flush_fixup);
+ for (; start < end; start++, i++) {
+ dest = (void *)start + *start;
+
+ pr_devel("patching dest %lx\n", (unsigned long)dest);
+
+ patch_instruction((struct ppc_inst *)dest, ppc_inst(instrs[0]));
+
+ if (types == L1D_FLUSH_FALLBACK)
+ patch_branch((struct ppc_inst *)(dest + 1), (unsigned long)&scv_entry_flush_fallback,
+ BRANCH_SET_LINK);
+ else
+ patch_instruction((struct ppc_inst *)(dest + 1), ppc_inst(instrs[1]));
+
+ patch_instruction((struct ppc_inst *)(dest + 2), ppc_inst(instrs[2]));
+ }
+
+
printk(KERN_DEBUG "entry-flush: patched %d locations (%s flush)\n", i,
(types == L1D_FLUSH_NONE) ? "no" :
(types == L1D_FLUSH_FALLBACK) ? "fallback displacement" :
diff --git a/arch/x86/entry/common.c b/arch/x86/entry/common.c
index 18d8f17f755c..0904f5676e4d 100644
--- a/arch/x86/entry/common.c
+++ b/arch/x86/entry/common.c
@@ -73,10 +73,8 @@ static __always_inline void do_syscall_32_irqs_on(struct pt_regs *regs,
unsigned int nr)
{
if (likely(nr < IA32_NR_syscalls)) {
- instrumentation_begin();
nr = array_index_nospec(nr, IA32_NR_syscalls);
regs->ax = ia32_sys_call_table[nr](regs);
- instrumentation_end();
}
}
@@ -91,8 +89,11 @@ __visible noinstr void do_int80_syscall_32(struct pt_regs *regs)
* or may not be necessary, but it matches the old asm behavior.
*/
nr = (unsigned int)syscall_enter_from_user_mode(regs, nr);
+ instrumentation_begin();
do_syscall_32_irqs_on(regs, nr);
+
+ instrumentation_end();
syscall_exit_to_user_mode(regs);
}
@@ -121,11 +122,12 @@ static noinstr bool __do_fast_syscall_32(struct pt_regs *regs)
res = get_user(*(u32 *)&regs->bp,
(u32 __user __force *)(unsigned long)(u32)regs->sp);
}
- instrumentation_end();
if (res) {
/* User code screwed up. */
regs->ax = -EFAULT;
+
+ instrumentation_end();
syscall_exit_to_user_mode(regs);
return false;
}
@@ -135,6 +137,8 @@ static noinstr bool __do_fast_syscall_32(struct pt_regs *regs)
/* Now this is just like a normal syscall. */
do_syscall_32_irqs_on(regs, nr);
+
+ instrumentation_end();
syscall_exit_to_user_mode(regs);
return true;
}
diff --git a/arch/x86/include/asm/fpu/api.h b/arch/x86/include/asm/fpu/api.h
index a5aba4ab0224..67a4f1cb2aac 100644
--- a/arch/x86/include/asm/fpu/api.h
+++ b/arch/x86/include/asm/fpu/api.h
@@ -16,14 +16,25 @@
* Use kernel_fpu_begin/end() if you intend to use FPU in kernel context. It
* disables preemption so be careful if you intend to use it for long periods
* of time.
- * If you intend to use the FPU in softirq you need to check first with
+ * If you intend to use the FPU in irq/softirq you need to check first with
* irq_fpu_usable() if it is possible.
*/
-extern void kernel_fpu_begin(void);
+
+/* Kernel FPU states to initialize in kernel_fpu_begin_mask() */
+#define KFPU_387 _BITUL(0) /* 387 state will be initialized */
+#define KFPU_MXCSR _BITUL(1) /* MXCSR will be initialized */
+
+extern void kernel_fpu_begin_mask(unsigned int kfpu_mask);
extern void kernel_fpu_end(void);
extern bool irq_fpu_usable(void);
extern void fpregs_mark_activate(void);
+/* Code that is unaware of kernel_fpu_begin_mask() can use this */
+static inline void kernel_fpu_begin(void)
+{
+ kernel_fpu_begin_mask(KFPU_387 | KFPU_MXCSR);
+}
+
/*
* Use fpregs_lock() while editing CPU's FPU registers or fpu->state.
* A context switch will (and softirq might) save CPU's FPU registers to
diff --git a/arch/x86/include/asm/intel-family.h b/arch/x86/include/asm/intel-family.h
index 5e658ba2654a..9abe842dbd84 100644
--- a/arch/x86/include/asm/intel-family.h
+++ b/arch/x86/include/asm/intel-family.h
@@ -97,6 +97,7 @@
#define INTEL_FAM6_LAKEFIELD 0x8A
#define INTEL_FAM6_ALDERLAKE 0x97
+#define INTEL_FAM6_ALDERLAKE_L 0x9A
/* "Small Core" Processors (Atom) */
diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h
index 0b4920a7238e..e16cccdd0420 100644
--- a/arch/x86/include/asm/msr.h
+++ b/arch/x86/include/asm/msr.h
@@ -86,7 +86,7 @@ static inline void do_trace_rdpmc(unsigned int msr, u64 val, int failed) {}
* think of extending them - you will be slapped with a stinking trout or a frozen
* shark will reach you, wherever you are! You've been warned.
*/
-static inline unsigned long long notrace __rdmsr(unsigned int msr)
+static __always_inline unsigned long long __rdmsr(unsigned int msr)
{
DECLARE_ARGS(val, low, high);
@@ -98,7 +98,7 @@ static inline unsigned long long notrace __rdmsr(unsigned int msr)
return EAX_EDX_VAL(val, low, high);
}
-static inline void notrace __wrmsr(unsigned int msr, u32 low, u32 high)
+static __always_inline void __wrmsr(unsigned int msr, u32 low, u32 high)
{
asm volatile("1: wrmsr\n"
"2:\n"
diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h
index 488a8e848754..9239399e5491 100644
--- a/arch/x86/include/asm/topology.h
+++ b/arch/x86/include/asm/topology.h
@@ -110,6 +110,8 @@ extern const struct cpumask *cpu_coregroup_mask(int cpu);
#define topology_die_id(cpu) (cpu_data(cpu).cpu_die_id)
#define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id)
+extern unsigned int __max_die_per_package;
+
#ifdef CONFIG_SMP
#define topology_die_cpumask(cpu) (per_cpu(cpu_die_map, cpu))
#define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu))
@@ -118,8 +120,6 @@ extern const struct cpumask *cpu_coregroup_mask(int cpu);
extern unsigned int __max_logical_packages;
#define topology_max_packages() (__max_logical_packages)
-extern unsigned int __max_die_per_package;
-
static inline int topology_max_die_per_package(void)
{
return __max_die_per_package;
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index f8ca66f3d861..347a956f71ca 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -542,12 +542,12 @@ static void bsp_init_amd(struct cpuinfo_x86 *c)
u32 ecx;
ecx = cpuid_ecx(0x8000001e);
- nodes_per_socket = ((ecx >> 8) & 7) + 1;
+ __max_die_per_package = nodes_per_socket = ((ecx >> 8) & 7) + 1;
} else if (boot_cpu_has(X86_FEATURE_NODEID_MSR)) {
u64 value;
rdmsrl(MSR_FAM10H_NODE_ID, value);
- nodes_per_socket = ((value >> 3) & 7) + 1;
+ __max_die_per_package = nodes_per_socket = ((value >> 3) & 7) + 1;
}
if (!boot_cpu_has(X86_FEATURE_AMD_SSBD) &&
diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
index 13d3f1cbda17..e133ce1e562b 100644
--- a/arch/x86/kernel/cpu/mce/core.c
+++ b/arch/x86/kernel/cpu/mce/core.c
@@ -1992,10 +1992,9 @@ static __always_inline void exc_machine_check_kernel(struct pt_regs *regs)
* that out because it's an indirect call. Annotate it.
*/
instrumentation_begin();
- trace_hardirqs_off_finish();
+
machine_check_vector(regs);
- if (regs->flags & X86_EFLAGS_IF)
- trace_hardirqs_on_prepare();
+
instrumentation_end();
irqentry_nmi_exit(regs, irq_state);
}
@@ -2004,7 +2003,9 @@ static __always_inline void exc_machine_check_user(struct pt_regs *regs)
{
irqentry_enter_from_user_mode(regs);
instrumentation_begin();
+
machine_check_vector(regs);
+
instrumentation_end();
irqentry_exit_to_user_mode(regs);
}
diff --git a/arch/x86/kernel/cpu/topology.c b/arch/x86/kernel/cpu/topology.c
index 1068002c8532..8678864ce712 100644
--- a/arch/x86/kernel/cpu/topology.c
+++ b/arch/x86/kernel/cpu/topology.c
@@ -25,10 +25,10 @@
#define BITS_SHIFT_NEXT_LEVEL(eax) ((eax) & 0x1f)
#define LEVEL_MAX_SIBLINGS(ebx) ((ebx) & 0xffff)
-#ifdef CONFIG_SMP
unsigned int __max_die_per_package __read_mostly = 1;
EXPORT_SYMBOL(__max_die_per_package);
+#ifdef CONFIG_SMP
/*
* Check if given CPUID extended toplogy "leaf" is implemented
*/
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
index eb86a2b831b1..571220ac8bea 100644
--- a/arch/x86/kernel/fpu/core.c
+++ b/arch/x86/kernel/fpu/core.c
@@ -121,7 +121,7 @@ int copy_fpregs_to_fpstate(struct fpu *fpu)
}
EXPORT_SYMBOL(copy_fpregs_to_fpstate);
-void kernel_fpu_begin(void)
+void kernel_fpu_begin_mask(unsigned int kfpu_mask)
{
preempt_disable();
@@ -141,13 +141,14 @@ void kernel_fpu_begin(void)
}
__cpu_invalidate_fpregs_state();
- if (boot_cpu_has(X86_FEATURE_XMM))
+ /* Put sane initial values into the control registers. */
+ if (likely(kfpu_mask & KFPU_MXCSR) && boot_cpu_has(X86_FEATURE_XMM))
ldmxcsr(MXCSR_DEFAULT);
- if (boot_cpu_has(X86_FEATURE_FPU))
+ if (unlikely(kfpu_mask & KFPU_387) && boot_cpu_has(X86_FEATURE_FPU))
asm volatile ("fninit");
}
-EXPORT_SYMBOL_GPL(kernel_fpu_begin);
+EXPORT_SYMBOL_GPL(kernel_fpu_begin_mask);
void kernel_fpu_end(void)
{
diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c
index 0bd1a0fc587e..84c1821819af 100644
--- a/arch/x86/kernel/sev-es.c
+++ b/arch/x86/kernel/sev-es.c
@@ -225,7 +225,7 @@ static inline u64 sev_es_rd_ghcb_msr(void)
return __rdmsr(MSR_AMD64_SEV_ES_GHCB);
}
-static inline void sev_es_wr_ghcb_msr(u64 val)
+static __always_inline void sev_es_wr_ghcb_msr(u64 val)
{
u32 low, high;
@@ -286,6 +286,12 @@ static enum es_result vc_write_mem(struct es_em_ctxt *ctxt,
u16 d2;
u8 d1;
+ /* If instruction ran in kernel mode and the I/O buffer is in kernel space */
+ if (!user_mode(ctxt->regs) && !access_ok(target, size)) {
+ memcpy(dst, buf, size);
+ return ES_OK;
+ }
+
switch (size) {
case 1:
memcpy(&d1, buf, 1);
@@ -335,6 +341,12 @@ static enum es_result vc_read_mem(struct es_em_ctxt *ctxt,
u16 d2;
u8 d1;
+ /* If instruction ran in kernel mode and the I/O buffer is in kernel space */
+ if (!user_mode(ctxt->regs) && !access_ok(s, size)) {
+ memcpy(buf, src, size);
+ return ES_OK;
+ }
+
switch (size) {
case 1:
if (get_user(d1, s))
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 8ca66af96a54..117e24fbfd8a 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -56,6 +56,7 @@
#include <linux/numa.h>
#include <linux/pgtable.h>
#include <linux/overflow.h>
+#include <linux/syscore_ops.h>
#include <asm/acpi.h>
#include <asm/desc.h>
@@ -2083,6 +2084,23 @@ static void init_counter_refs(void)
this_cpu_write(arch_prev_mperf, mperf);
}
+#ifdef CONFIG_PM_SLEEP
+static struct syscore_ops freq_invariance_syscore_ops = {
+ .resume = init_counter_refs,
+};
+
+static void register_freq_invariance_syscore_ops(void)
+{
+ /* Bail out if registered already. */
+ if (freq_invariance_syscore_ops.node.prev)
+ return;
+
+ register_syscore_ops(&freq_invariance_syscore_ops);
+}
+#else
+static inline void register_freq_invariance_syscore_ops(void) {}
+#endif
+
static void init_freq_invariance(bool secondary, bool cppc_ready)
{
bool ret = false;
@@ -2109,6 +2127,7 @@ static void init_freq_invariance(bool secondary, bool cppc_ready)
if (ret) {
init_counter_refs();
static_branch_enable(&arch_scale_freq_key);
+ register_freq_invariance_syscore_ops();
pr_info("Estimated ratio of average max frequency by base frequency (times 1024): %llu\n", arch_max_freq_ratio);
} else {
pr_debug("Couldn't determine max cpu frequency, necessary for scale-invariant accounting.\n");
diff --git a/arch/x86/lib/mmx_32.c b/arch/x86/lib/mmx_32.c
index 4321fa02e18d..419365c48b2a 100644
--- a/arch/x86/lib/mmx_32.c
+++ b/arch/x86/lib/mmx_32.c
@@ -26,6 +26,16 @@
#include <asm/fpu/api.h>
#include <asm/asm.h>
+/*
+ * Use KFPU_387. MMX instructions are not affected by MXCSR,
+ * but both AMD and Intel documentation states that even integer MMX
+ * operations will result in #MF if an exception is pending in FCW.
+ *
+ * EMMS is not needed afterwards because, after calling kernel_fpu_end(),
+ * any subsequent user of the 387 stack will reinitialize it using
+ * KFPU_387.
+ */
+
void *_mmx_memcpy(void *to, const void *from, size_t len)
{
void *p;
@@ -37,7 +47,7 @@ void *_mmx_memcpy(void *to, const void *from, size_t len)
p = to;
i = len >> 6; /* len/64 */
- kernel_fpu_begin();
+ kernel_fpu_begin_mask(KFPU_387);
__asm__ __volatile__ (
"1: prefetch (%0)\n" /* This set is 28 bytes */
@@ -127,7 +137,7 @@ static void fast_clear_page(void *page)
{
int i;
- kernel_fpu_begin();
+ kernel_fpu_begin_mask(KFPU_387);
__asm__ __volatile__ (
" pxor %%mm0, %%mm0\n" : :
@@ -160,7 +170,7 @@ static void fast_copy_page(void *to, void *from)
{
int i;
- kernel_fpu_begin();
+ kernel_fpu_begin_mask(KFPU_387);
/*
* maybe the prefetch stuff can go before the expensive fnsave...
@@ -247,7 +257,7 @@ static void fast_clear_page(void *page)
{
int i;
- kernel_fpu_begin();
+ kernel_fpu_begin_mask(KFPU_387);
__asm__ __volatile__ (
" pxor %%mm0, %%mm0\n" : :
@@ -282,7 +292,7 @@ static void fast_copy_page(void *to, void *from)
{
int i;
- kernel_fpu_begin();
+ kernel_fpu_begin_mask(KFPU_387);
__asm__ __volatile__ (
"1: prefetch (%0)\n"
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-20 08:11:57 +0000