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-rw-r--r--arch/x86/kernel/amd_gart_64.c20
-rw-r--r--arch/x86/kernel/apic/apic.c2
-rw-r--r--arch/x86/kernel/apic/vector.c2
-rw-r--r--arch/x86/kernel/fpu/signal.c12
-rw-r--r--arch/x86/kernel/hpet.c3
-rw-r--r--arch/x86/kernel/nmi.c1
-rw-r--r--arch/x86/kernel/pci-calgary_64.c14
-rw-r--r--arch/x86/kernel/pci-dma.c4
-rw-r--r--arch/x86/kernel/pci-nommu.c4
-rw-r--r--arch/x86/kernel/pci-swiotlb.c4
-rw-r--r--arch/x86/kernel/ptrace.c15
-rw-r--r--arch/x86/kernel/rtc.c3
-rw-r--r--arch/x86/kernel/signal.c40
13 files changed, 74 insertions, 50 deletions
diff --git a/arch/x86/kernel/amd_gart_64.c b/arch/x86/kernel/amd_gart_64.c
index 42d27a62a404..63ff468a7986 100644
--- a/arch/x86/kernel/amd_gart_64.c
+++ b/arch/x86/kernel/amd_gart_64.c
@@ -241,7 +241,7 @@ static dma_addr_t dma_map_area(struct device *dev, dma_addr_t phys_mem,
static dma_addr_t gart_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
unsigned long bus;
phys_addr_t paddr = page_to_phys(page) + offset;
@@ -263,7 +263,7 @@ static dma_addr_t gart_map_page(struct device *dev, struct page *page,
*/
static void gart_unmap_page(struct device *dev, dma_addr_t dma_addr,
size_t size, enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
unsigned long iommu_page;
int npages;
@@ -285,7 +285,7 @@ static void gart_unmap_page(struct device *dev, dma_addr_t dma_addr,
* Wrapper for pci_unmap_single working with scatterlists.
*/
static void gart_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction dir, struct dma_attrs *attrs)
+ enum dma_data_direction dir, unsigned long attrs)
{
struct scatterlist *s;
int i;
@@ -293,7 +293,7 @@ static void gart_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
for_each_sg(sg, s, nents, i) {
if (!s->dma_length || !s->length)
break;
- gart_unmap_page(dev, s->dma_address, s->dma_length, dir, NULL);
+ gart_unmap_page(dev, s->dma_address, s->dma_length, dir, 0);
}
}
@@ -315,7 +315,7 @@ static int dma_map_sg_nonforce(struct device *dev, struct scatterlist *sg,
addr = dma_map_area(dev, addr, s->length, dir, 0);
if (addr == bad_dma_addr) {
if (i > 0)
- gart_unmap_sg(dev, sg, i, dir, NULL);
+ gart_unmap_sg(dev, sg, i, dir, 0);
nents = 0;
sg[0].dma_length = 0;
break;
@@ -386,7 +386,7 @@ dma_map_cont(struct device *dev, struct scatterlist *start, int nelems,
* Merge chunks that have page aligned sizes into a continuous mapping.
*/
static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction dir, struct dma_attrs *attrs)
+ enum dma_data_direction dir, unsigned long attrs)
{
struct scatterlist *s, *ps, *start_sg, *sgmap;
int need = 0, nextneed, i, out, start;
@@ -456,7 +456,7 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents,
error:
flush_gart();
- gart_unmap_sg(dev, sg, out, dir, NULL);
+ gart_unmap_sg(dev, sg, out, dir, 0);
/* When it was forced or merged try again in a dumb way */
if (force_iommu || iommu_merge) {
@@ -476,7 +476,7 @@ error:
/* allocate and map a coherent mapping */
static void *
gart_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_addr,
- gfp_t flag, struct dma_attrs *attrs)
+ gfp_t flag, unsigned long attrs)
{
dma_addr_t paddr;
unsigned long align_mask;
@@ -508,9 +508,9 @@ gart_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_addr,
/* free a coherent mapping */
static void
gart_free_coherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_addr, struct dma_attrs *attrs)
+ dma_addr_t dma_addr, unsigned long attrs)
{
- gart_unmap_page(dev, dma_addr, size, DMA_BIDIRECTIONAL, NULL);
+ gart_unmap_page(dev, dma_addr, size, DMA_BIDIRECTIONAL, 0);
dma_generic_free_coherent(dev, size, vaddr, dma_addr, attrs);
}
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 7943d38c57ca..20abd912f0e4 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -147,7 +147,7 @@ static int force_enable_local_apic __initdata;
*/
static int __init parse_lapic(char *arg)
{
- if (config_enabled(CONFIG_X86_32) && !arg)
+ if (IS_ENABLED(CONFIG_X86_32) && !arg)
force_enable_local_apic = 1;
else if (arg && !strncmp(arg, "notscdeadline", 13))
setup_clear_cpu_cap(X86_FEATURE_TSC_DEADLINE_TIMER);
diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c
index a5e400afc563..6066d945c40e 100644
--- a/arch/x86/kernel/apic/vector.c
+++ b/arch/x86/kernel/apic/vector.c
@@ -523,7 +523,7 @@ static int apic_set_affinity(struct irq_data *irq_data,
struct apic_chip_data *data = irq_data->chip_data;
int err, irq = irq_data->irq;
- if (!config_enabled(CONFIG_SMP))
+ if (!IS_ENABLED(CONFIG_SMP))
return -EPERM;
if (!cpumask_intersects(dest, cpu_online_mask))
diff --git a/arch/x86/kernel/fpu/signal.c b/arch/x86/kernel/fpu/signal.c
index 9e231d88bb33..a184c210efba 100644
--- a/arch/x86/kernel/fpu/signal.c
+++ b/arch/x86/kernel/fpu/signal.c
@@ -159,8 +159,8 @@ int copy_fpstate_to_sigframe(void __user *buf, void __user *buf_fx, int size)
struct task_struct *tsk = current;
int ia32_fxstate = (buf != buf_fx);
- ia32_fxstate &= (config_enabled(CONFIG_X86_32) ||
- config_enabled(CONFIG_IA32_EMULATION));
+ ia32_fxstate &= (IS_ENABLED(CONFIG_X86_32) ||
+ IS_ENABLED(CONFIG_IA32_EMULATION));
if (!access_ok(VERIFY_WRITE, buf, size))
return -EACCES;
@@ -268,8 +268,8 @@ static int __fpu__restore_sig(void __user *buf, void __user *buf_fx, int size)
u64 xfeatures = 0;
int fx_only = 0;
- ia32_fxstate &= (config_enabled(CONFIG_X86_32) ||
- config_enabled(CONFIG_IA32_EMULATION));
+ ia32_fxstate &= (IS_ENABLED(CONFIG_X86_32) ||
+ IS_ENABLED(CONFIG_IA32_EMULATION));
if (!buf) {
fpu__clear(fpu);
@@ -416,8 +416,8 @@ void fpu__init_prepare_fx_sw_frame(void)
fx_sw_reserved.xfeatures = xfeatures_mask;
fx_sw_reserved.xstate_size = fpu_user_xstate_size;
- if (config_enabled(CONFIG_IA32_EMULATION) ||
- config_enabled(CONFIG_X86_32)) {
+ if (IS_ENABLED(CONFIG_IA32_EMULATION) ||
+ IS_ENABLED(CONFIG_X86_32)) {
int fsave_header_size = sizeof(struct fregs_state);
fx_sw_reserved_ia32 = fx_sw_reserved;
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index 3d747070fe67..ed16e58658a4 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -1019,7 +1019,6 @@ void hpet_disable(void)
*/
#include <linux/mc146818rtc.h>
#include <linux/rtc.h>
-#include <asm/rtc.h>
#define DEFAULT_RTC_INT_FREQ 64
#define DEFAULT_RTC_SHIFT 6
@@ -1243,7 +1242,7 @@ irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id)
memset(&curr_time, 0, sizeof(struct rtc_time));
if (hpet_rtc_flags & (RTC_UIE | RTC_AIE))
- get_rtc_time(&curr_time);
+ mc146818_set_time(&curr_time);
if (hpet_rtc_flags & RTC_UIE &&
curr_time.tm_sec != hpet_prev_update_sec) {
diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c
index 04b132a767f1..bfe4d6c96fbd 100644
--- a/arch/x86/kernel/nmi.c
+++ b/arch/x86/kernel/nmi.c
@@ -17,6 +17,7 @@
#include <linux/debugfs.h>
#include <linux/delay.h>
#include <linux/hardirq.h>
+#include <linux/ratelimit.h>
#include <linux/slab.h>
#include <linux/export.h>
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index 833b1d329c47..5d400ba1349d 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -340,7 +340,7 @@ static inline struct iommu_table *find_iommu_table(struct device *dev)
static void calgary_unmap_sg(struct device *dev, struct scatterlist *sglist,
int nelems,enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
struct iommu_table *tbl = find_iommu_table(dev);
struct scatterlist *s;
@@ -364,7 +364,7 @@ static void calgary_unmap_sg(struct device *dev, struct scatterlist *sglist,
static int calgary_map_sg(struct device *dev, struct scatterlist *sg,
int nelems, enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
struct iommu_table *tbl = find_iommu_table(dev);
struct scatterlist *s;
@@ -396,7 +396,7 @@ static int calgary_map_sg(struct device *dev, struct scatterlist *sg,
return nelems;
error:
- calgary_unmap_sg(dev, sg, nelems, dir, NULL);
+ calgary_unmap_sg(dev, sg, nelems, dir, 0);
for_each_sg(sg, s, nelems, i) {
sg->dma_address = DMA_ERROR_CODE;
sg->dma_length = 0;
@@ -407,7 +407,7 @@ error:
static dma_addr_t calgary_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
void *vaddr = page_address(page) + offset;
unsigned long uaddr;
@@ -422,7 +422,7 @@ static dma_addr_t calgary_map_page(struct device *dev, struct page *page,
static void calgary_unmap_page(struct device *dev, dma_addr_t dma_addr,
size_t size, enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
struct iommu_table *tbl = find_iommu_table(dev);
unsigned int npages;
@@ -432,7 +432,7 @@ static void calgary_unmap_page(struct device *dev, dma_addr_t dma_addr,
}
static void* calgary_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t flag, struct dma_attrs *attrs)
+ dma_addr_t *dma_handle, gfp_t flag, unsigned long attrs)
{
void *ret = NULL;
dma_addr_t mapping;
@@ -466,7 +466,7 @@ error:
static void calgary_free_coherent(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
unsigned int npages;
struct iommu_table *tbl = find_iommu_table(dev);
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 6ba014c61d62..d30c37750765 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -77,7 +77,7 @@ void __init pci_iommu_alloc(void)
}
void *dma_generic_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_addr, gfp_t flag,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
unsigned long dma_mask;
struct page *page;
@@ -120,7 +120,7 @@ again:
}
void dma_generic_free_coherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_addr, struct dma_attrs *attrs)
+ dma_addr_t dma_addr, unsigned long attrs)
{
unsigned int count = PAGE_ALIGN(size) >> PAGE_SHIFT;
struct page *page = virt_to_page(vaddr);
diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c
index da15918d1c81..00e71ce396a8 100644
--- a/arch/x86/kernel/pci-nommu.c
+++ b/arch/x86/kernel/pci-nommu.c
@@ -28,7 +28,7 @@ check_addr(char *name, struct device *hwdev, dma_addr_t bus, size_t size)
static dma_addr_t nommu_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
dma_addr_t bus = page_to_phys(page) + offset;
WARN_ON(size == 0);
@@ -55,7 +55,7 @@ static dma_addr_t nommu_map_page(struct device *dev, struct page *page,
*/
static int nommu_map_sg(struct device *hwdev, struct scatterlist *sg,
int nents, enum dma_data_direction dir,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
struct scatterlist *s;
int i;
diff --git a/arch/x86/kernel/pci-swiotlb.c b/arch/x86/kernel/pci-swiotlb.c
index 5069ef560d83..b47edb8f5256 100644
--- a/arch/x86/kernel/pci-swiotlb.c
+++ b/arch/x86/kernel/pci-swiotlb.c
@@ -16,7 +16,7 @@ int swiotlb __read_mostly;
void *x86_swiotlb_alloc_coherent(struct device *hwdev, size_t size,
dma_addr_t *dma_handle, gfp_t flags,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
void *vaddr;
@@ -37,7 +37,7 @@ void *x86_swiotlb_alloc_coherent(struct device *hwdev, size_t size,
void x86_swiotlb_free_coherent(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_addr,
- struct dma_attrs *attrs)
+ unsigned long attrs)
{
if (is_swiotlb_buffer(dma_to_phys(dev, dma_addr)))
swiotlb_free_coherent(dev, size, vaddr, dma_addr);
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 600edd225e81..f79576a541ff 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -923,15 +923,18 @@ static int putreg32(struct task_struct *child, unsigned regno, u32 value)
case offsetof(struct user32, regs.orig_eax):
/*
- * A 32-bit debugger setting orig_eax means to restore
- * the state of the task restarting a 32-bit syscall.
- * Make sure we interpret the -ERESTART* codes correctly
- * in case the task is not actually still sitting at the
- * exit from a 32-bit syscall with TS_COMPAT still set.
+ * Warning: bizarre corner case fixup here. A 32-bit
+ * debugger setting orig_eax to -1 wants to disable
+ * syscall restart. Make sure that the syscall
+ * restart code sign-extends orig_ax. Also make sure
+ * we interpret the -ERESTART* codes correctly if
+ * loaded into regs->ax in case the task is not
+ * actually still sitting at the exit from a 32-bit
+ * syscall with TS_COMPAT still set.
*/
regs->orig_ax = value;
if (syscall_get_nr(child, regs) >= 0)
- task_thread_info(child)->status |= TS_COMPAT;
+ task_thread_info(child)->status |= TS_I386_REGS_POKED;
break;
case offsetof(struct user32, regs.eflags):
diff --git a/arch/x86/kernel/rtc.c b/arch/x86/kernel/rtc.c
index eceaa082ec3f..79c6311cd912 100644
--- a/arch/x86/kernel/rtc.c
+++ b/arch/x86/kernel/rtc.c
@@ -13,7 +13,6 @@
#include <asm/x86_init.h>
#include <asm/time.h>
#include <asm/intel-mid.h>
-#include <asm/rtc.h>
#include <asm/setup.h>
#ifdef CONFIG_X86_32
@@ -47,7 +46,7 @@ int mach_set_rtc_mmss(const struct timespec *now)
rtc_time_to_tm(nowtime, &tm);
if (!rtc_valid_tm(&tm)) {
- retval = set_rtc_time(&tm);
+ retval = mc146818_set_time(&tm);
if (retval)
printk(KERN_ERR "%s: RTC write failed with error %d\n",
__func__, retval);
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index 22cc2f9f8aec..04cb3212db2d 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -146,7 +146,7 @@ static int restore_sigcontext(struct pt_regs *regs,
buf = (void __user *)buf_val;
} get_user_catch(err);
- err |= fpu__restore_sig(buf, config_enabled(CONFIG_X86_32));
+ err |= fpu__restore_sig(buf, IS_ENABLED(CONFIG_X86_32));
force_iret();
@@ -245,14 +245,14 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size,
struct fpu *fpu = &current->thread.fpu;
/* redzone */
- if (config_enabled(CONFIG_X86_64))
+ if (IS_ENABLED(CONFIG_X86_64))
sp -= 128;
/* This is the X/Open sanctioned signal stack switching. */
if (ka->sa.sa_flags & SA_ONSTACK) {
if (sas_ss_flags(sp) == 0)
sp = current->sas_ss_sp + current->sas_ss_size;
- } else if (config_enabled(CONFIG_X86_32) &&
+ } else if (IS_ENABLED(CONFIG_X86_32) &&
!onsigstack &&
(regs->ss & 0xffff) != __USER_DS &&
!(ka->sa.sa_flags & SA_RESTORER) &&
@@ -262,7 +262,7 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size,
}
if (fpu->fpstate_active) {
- sp = fpu__alloc_mathframe(sp, config_enabled(CONFIG_X86_32),
+ sp = fpu__alloc_mathframe(sp, IS_ENABLED(CONFIG_X86_32),
&buf_fx, &math_size);
*fpstate = (void __user *)sp;
}
@@ -662,18 +662,18 @@ badframe:
static inline int is_ia32_compat_frame(void)
{
- return config_enabled(CONFIG_IA32_EMULATION) &&
+ return IS_ENABLED(CONFIG_IA32_EMULATION) &&
test_thread_flag(TIF_IA32);
}
static inline int is_ia32_frame(void)
{
- return config_enabled(CONFIG_X86_32) || is_ia32_compat_frame();
+ return IS_ENABLED(CONFIG_X86_32) || is_ia32_compat_frame();
}
static inline int is_x32_frame(void)
{
- return config_enabled(CONFIG_X86_X32_ABI) && test_thread_flag(TIF_X32);
+ return IS_ENABLED(CONFIG_X86_X32_ABI) && test_thread_flag(TIF_X32);
}
static int
@@ -760,8 +760,30 @@ handle_signal(struct ksignal *ksig, struct pt_regs *regs)
static inline unsigned long get_nr_restart_syscall(const struct pt_regs *regs)
{
-#ifdef CONFIG_X86_64
- if (in_ia32_syscall())
+ /*
+ * This function is fundamentally broken as currently
+ * implemented.
+ *
+ * The idea is that we want to trigger a call to the
+ * restart_block() syscall and that we want in_ia32_syscall(),
+ * in_x32_syscall(), etc. to match whatever they were in the
+ * syscall being restarted. We assume that the syscall
+ * instruction at (regs->ip - 2) matches whatever syscall
+ * instruction we used to enter in the first place.
+ *
+ * The problem is that we can get here when ptrace pokes
+ * syscall-like values into regs even if we're not in a syscall
+ * at all.
+ *
+ * For now, we maintain historical behavior and guess based on
+ * stored state. We could do better by saving the actual
+ * syscall arch in restart_block or (with caveats on x32) by
+ * checking if regs->ip points to 'int $0x80'. The current
+ * behavior is incorrect if a tracer has a different bitness
+ * than the tracee.
+ */
+#ifdef CONFIG_IA32_EMULATION
+ if (current_thread_info()->status & (TS_COMPAT|TS_I386_REGS_POKED))
return __NR_ia32_restart_syscall;
#endif
#ifdef CONFIG_X86_X32_ABI
generated by cgit (git 2.34.1) at 2025-06-02 05:35:25 +0000