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-rw-r--r--arch/arm/kernel/asm-offsets.c6
-rw-r--r--arch/arm/kernel/head-nommu.S4
-rw-r--r--arch/arm/kernel/head.S8
-rw-r--r--arch/arm/mach-aaec2000/aaed2000.c7
-rw-r--r--arch/arm/mach-aaec2000/core.c5
-rw-r--r--arch/arm/mach-aaec2000/core.h1
-rw-r--r--arch/arm/mach-imx/mx1ads.c2
-rw-r--r--arch/arm/mach-pxa/dma.c17
-rw-r--r--arch/arm/mach-sa1100/irq.c16
-rw-r--r--arch/arm/vfp/vfpmodule.c2
-rw-r--r--arch/i386/kernel/io_apic.c5
-rw-r--r--arch/i386/kernel/mpparse.c12
-rw-r--r--arch/ia64/lib/memcpy_mck.S9
-rw-r--r--arch/x86_64/kernel/e820.c6
-rw-r--r--arch/x86_64/kernel/io_apic.c5
-rw-r--r--arch/x86_64/kernel/mpparse.c12
-rw-r--r--arch/x86_64/kernel/pci-gart.c8
-rw-r--r--arch/x86_64/kernel/setup.c30
-rw-r--r--arch/x86_64/kernel/traps.c12
19 files changed, 124 insertions, 43 deletions
diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c
index b324dcac1c56..45fdf4a51a2a 100644
--- a/arch/arm/kernel/asm-offsets.c
+++ b/arch/arm/kernel/asm-offsets.c
@@ -95,5 +95,11 @@ int main(void)
DEFINE(SYS_ERROR0, 0x9f0000);
BLANK();
DEFINE(SIZEOF_MACHINE_DESC, sizeof(struct machine_desc));
+ DEFINE(MACHINFO_TYPE, offsetof(struct machine_desc, nr));
+ DEFINE(MACHINFO_NAME, offsetof(struct machine_desc, name));
+ DEFINE(MACHINFO_PHYSIO, offsetof(struct machine_desc, phys_io));
+ DEFINE(MACHINFO_PGOFFIO, offsetof(struct machine_desc, io_pg_offst));
+ DEFINE(PROCINFO_INITFUNC, offsetof(struct proc_info_list, __cpu_flush));
+ DEFINE(PROCINFO_MMUFLAGS, offsetof(struct proc_info_list, __cpu_mmu_flags));
return 0;
}
diff --git a/arch/arm/kernel/head-nommu.S b/arch/arm/kernel/head-nommu.S
index 0bea65864051..adf62e5eaad7 100644
--- a/arch/arm/kernel/head-nommu.S
+++ b/arch/arm/kernel/head-nommu.S
@@ -20,12 +20,10 @@
#include <asm/mach-types.h>
#include <asm/procinfo.h>
#include <asm/ptrace.h>
+#include <asm/asm-offsets.h>
#include <asm/thread_info.h>
#include <asm/system.h>
-#define PROCINFO_INITFUNC 12
-#define MACHINFO_TYPE 0
-
/*
* Kernel startup entry point.
* ---------------------------
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 04b66a9328ef..04f7344e356a 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -24,14 +24,6 @@
#include <asm/thread_info.h>
#include <asm/system.h>
-#define PROCINFO_MMUFLAGS 8
-#define PROCINFO_INITFUNC 12
-
-#define MACHINFO_TYPE 0
-#define MACHINFO_PHYSIO 4
-#define MACHINFO_PGOFFIO 8
-#define MACHINFO_NAME 12
-
#define KERNEL_RAM_ADDR (PAGE_OFFSET + TEXT_OFFSET)
/*
diff --git a/arch/arm/mach-aaec2000/aaed2000.c b/arch/arm/mach-aaec2000/aaed2000.c
index dc5fa8e5ebef..83f57da3184c 100644
--- a/arch/arm/mach-aaec2000/aaed2000.c
+++ b/arch/arm/mach-aaec2000/aaed2000.c
@@ -79,7 +79,12 @@ static void __init aaed2000_init(void)
}
static struct map_desc aaed2000_io_desc[] __initdata = {
- { EXT_GPIO_VBASE, EXT_GPIO_PBASE, EXT_GPIO_LENGTH, MT_DEVICE }, /* Ext GPIO */
+ {
+ .virtual = EXT_GPIO_VBASE,
+ .pfn = __phys_to_pfn(EXT_GPIO_PBASE),
+ .length = EXT_GPIO_LENGTH,
+ .type = MT_DEVICE
+ },
};
static void __init aaed2000_map_io(void)
diff --git a/arch/arm/mach-aaec2000/core.c b/arch/arm/mach-aaec2000/core.c
index dce4815cf53c..65be5efd633c 100644
--- a/arch/arm/mach-aaec2000/core.c
+++ b/arch/arm/mach-aaec2000/core.c
@@ -20,7 +20,6 @@
#include <linux/interrupt.h>
#include <linux/timex.h>
#include <linux/signal.h>
-#include <linux/amba/bus.h>
#include <asm/hardware.h>
#include <asm/irq.h>
@@ -50,12 +49,12 @@
static struct map_desc standard_io_desc[] __initdata = {
{
.virtual = VIO_APB_BASE,
- .physical = __phys_to_pfn(PIO_APB_BASE),
+ .pfn = __phys_to_pfn(PIO_APB_BASE),
.length = IO_APB_LENGTH,
.type = MT_DEVICE
}, {
.virtual = VIO_AHB_BASE,
- .physical = __phys_to_pfn(PIO_AHB_BASE),
+ .pfn = __phys_to_pfn(PIO_AHB_BASE),
.length = IO_AHB_LENGTH,
.type = MT_DEVICE
}
diff --git a/arch/arm/mach-aaec2000/core.h b/arch/arm/mach-aaec2000/core.h
index b6029a95f19c..59501b573167 100644
--- a/arch/arm/mach-aaec2000/core.h
+++ b/arch/arm/mach-aaec2000/core.h
@@ -9,6 +9,7 @@
*
*/
+#include <linux/amba/bus.h>
#include <linux/amba/clcd.h>
struct sys_timer;
diff --git a/arch/arm/mach-imx/mx1ads.c b/arch/arm/mach-imx/mx1ads.c
index e1f6c0bbe1e7..da893c80d471 100644
--- a/arch/arm/mach-imx/mx1ads.c
+++ b/arch/arm/mach-imx/mx1ads.c
@@ -161,7 +161,7 @@ mx1ads_map_io(void)
MACHINE_START(MX1ADS, "Motorola MX1ADS")
/* Maintainer: Sascha Hauer, Pengutronix */
.phys_io = 0x00200000,
- .io_pg_offst = ((0xe0200000) >> 18) & 0xfffc,
+ .io_pg_offst = ((0xe0000000) >> 18) & 0xfffc,
.boot_params = 0x08000100,
.map_io = mx1ads_map_io,
.init_irq = imx_init_irq,
diff --git a/arch/arm/mach-pxa/dma.c b/arch/arm/mach-pxa/dma.c
index 458112b21e25..7d8c85486c66 100644
--- a/arch/arm/mach-pxa/dma.c
+++ b/arch/arm/mach-pxa/dma.c
@@ -45,23 +45,16 @@ int pxa_request_dma (char *name, pxa_dma_prio prio,
local_irq_save(flags);
- /* try grabbing a DMA channel with the requested priority */
- for (i = prio; i < prio + PXA_DMA_NBCH(prio); i++) {
- if (!dma_channels[i].name) {
- found = 1;
- break;
- }
- }
-
- if (!found) {
- /* requested prio group is full, try hier priorities */
- for (i = prio-1; i >= 0; i--) {
+ do {
+ /* try grabbing a DMA channel with the requested priority */
+ pxa_for_each_dma_prio (i, prio) {
if (!dma_channels[i].name) {
found = 1;
break;
}
}
- }
+ /* if requested prio group is full, try a hier priority */
+ } while (!found && prio--);
if (found) {
DCSR(i) = DCSR_STARTINTR|DCSR_ENDINTR|DCSR_BUSERR;
diff --git a/arch/arm/mach-sa1100/irq.c b/arch/arm/mach-sa1100/irq.c
index c131a5201b5b..b3a56024182e 100644
--- a/arch/arm/mach-sa1100/irq.c
+++ b/arch/arm/mach-sa1100/irq.c
@@ -199,10 +199,26 @@ static void sa1100_unmask_irq(unsigned int irq)
ICMR |= (1 << irq);
}
+/*
+ * Apart form GPIOs, only the RTC alarm can be a wakeup event.
+ */
+static int sa1100_set_wake(unsigned int irq, unsigned int on)
+{
+ if (irq == IRQ_RTCAlrm) {
+ if (on)
+ PWER |= PWER_RTC;
+ else
+ PWER &= ~PWER_RTC;
+ return 0;
+ }
+ return -EINVAL;
+}
+
static struct irqchip sa1100_normal_chip = {
.ack = sa1100_mask_irq,
.mask = sa1100_mask_irq,
.unmask = sa1100_unmask_irq,
+ .set_wake = sa1100_set_wake,
};
static struct resource irq_resource = {
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index 37ff8145b5b5..03486be04193 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -245,7 +245,7 @@ void VFP9_bounce(u32 trigger, u32 fpexc, struct pt_regs *regs)
*/
barrier();
trigger = fmrx(FPINST2);
- fpscr = fmrx(FPSCR);
+ orig_fpscr = fpscr = fmrx(FPSCR);
emulate:
exceptions = vfp_emulate_instruction(trigger, fpscr, regs);
diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index f8f132aa5472..d70f2ade5cde 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -2238,6 +2238,8 @@ static inline void unlock_ExtINT_logic(void)
spin_unlock_irqrestore(&ioapic_lock, flags);
}
+int timer_uses_ioapic_pin_0;
+
/*
* This code may look a bit paranoid, but it's supposed to cooperate with
* a wide range of boards and BIOS bugs. Fortunately only the timer IRQ
@@ -2274,6 +2276,9 @@ static inline void check_timer(void)
pin2 = ioapic_i8259.pin;
apic2 = ioapic_i8259.apic;
+ if (pin1 == 0)
+ timer_uses_ioapic_pin_0 = 1;
+
printk(KERN_INFO "..TIMER: vector=0x%02X apic1=%d pin1=%d apic2=%d pin2=%d\n",
vector, apic1, pin1, apic2, pin2);
diff --git a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c
index 34d21e21e012..6b1392d33ed5 100644
--- a/arch/i386/kernel/mpparse.c
+++ b/arch/i386/kernel/mpparse.c
@@ -1130,7 +1130,17 @@ int mp_register_gsi (u32 gsi, int triggering, int polarity)
*/
int irq = gsi;
if (gsi < MAX_GSI_NUM) {
- if (gsi > 15)
+ /*
+ * Retain the VIA chipset work-around (gsi > 15), but
+ * avoid a problem where the 8254 timer (IRQ0) is setup
+ * via an override (so it's not on pin 0 of the ioapic),
+ * and at the same time, the pin 0 interrupt is a PCI
+ * type. The gsi > 15 test could cause these two pins
+ * to be shared as IRQ0, and they are not shareable.
+ * So test for this condition, and if necessary, avoid
+ * the pin collision.
+ */
+ if (gsi > 15 || (gsi == 0 && !timer_uses_ioapic_pin_0))
gsi = pci_irq++;
/*
* Don't assign IRQ used by ACPI SCI
diff --git a/arch/ia64/lib/memcpy_mck.S b/arch/ia64/lib/memcpy_mck.S
index 46c9331e7ab5..9e534d52b1d5 100644
--- a/arch/ia64/lib/memcpy_mck.S
+++ b/arch/ia64/lib/memcpy_mck.S
@@ -6,7 +6,9 @@
* in1: source address
* in2: number of bytes to copy
* Output:
- * 0 if success, or number of byte NOT copied if error occurred.
+ * for memcpy: return dest
+ * for copy_user: return 0 if success,
+ * or number of byte NOT copied if error occurred.
*
* Copyright (C) 2002 Intel Corp.
* Copyright (C) 2002 Ken Chen <kenneth.w.chen@intel.com>
@@ -73,6 +75,7 @@ GLOBAL_ENTRY(memcpy)
and r28=0x7,in0
and r29=0x7,in1
mov f6=f0
+ mov retval=in0
br.cond.sptk .common_code
;;
END(memcpy)
@@ -84,7 +87,7 @@ GLOBAL_ENTRY(__copy_user)
mov f6=f1
mov saved_in0=in0 // save dest pointer
mov saved_in1=in1 // save src pointer
- mov saved_in2=in2 // save len
+ mov retval=r0 // initialize return value
;;
.common_code:
cmp.gt p15,p0=8,in2 // check for small size
@@ -92,7 +95,7 @@ GLOBAL_ENTRY(__copy_user)
cmp.ne p14,p0=0,r29 // check src alignment
add src0=0,in1
sub r30=8,r28 // for .align_dest
- mov retval=r0 // initialize return value
+ mov saved_in2=in2 // save len
;;
add dst0=0,in0
add dst1=1,in0 // dest odd index
diff --git a/arch/x86_64/kernel/e820.c b/arch/x86_64/kernel/e820.c
index 62776c07cff1..222b5b46d2b2 100644
--- a/arch/x86_64/kernel/e820.c
+++ b/arch/x86_64/kernel/e820.c
@@ -76,6 +76,12 @@ static inline int bad_addr(unsigned long *addrp, unsigned long size)
*addrp = __pa_symbol(&_end);
return 1;
}
+
+ if (last >= ebda_addr && addr < ebda_addr + ebda_size) {
+ *addrp = ebda_addr + ebda_size;
+ return 1;
+ }
+
/* XXX ramdisk image here? */
return 0;
}
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index 77b4c608cca0..0de3ea938830 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -1777,6 +1777,8 @@ static inline void unlock_ExtINT_logic(void)
spin_unlock_irqrestore(&ioapic_lock, flags);
}
+int timer_uses_ioapic_pin_0;
+
/*
* This code may look a bit paranoid, but it's supposed to cooperate with
* a wide range of boards and BIOS bugs. Fortunately only the timer IRQ
@@ -1814,6 +1816,9 @@ static inline void check_timer(void)
pin2 = ioapic_i8259.pin;
apic2 = ioapic_i8259.apic;
+ if (pin1 == 0)
+ timer_uses_ioapic_pin_0 = 1;
+
apic_printk(APIC_VERBOSE,KERN_INFO "..TIMER: vector=0x%02X apic1=%d pin1=%d apic2=%d pin2=%d\n",
vector, apic1, pin1, apic2, pin2);
diff --git a/arch/x86_64/kernel/mpparse.c b/arch/x86_64/kernel/mpparse.c
index b17cf3eba359..083da7e606b1 100644
--- a/arch/x86_64/kernel/mpparse.c
+++ b/arch/x86_64/kernel/mpparse.c
@@ -968,7 +968,17 @@ int mp_register_gsi(u32 gsi, int triggering, int polarity)
*/
int irq = gsi;
if (gsi < MAX_GSI_NUM) {
- if (gsi > 15)
+ /*
+ * Retain the VIA chipset work-around (gsi > 15), but
+ * avoid a problem where the 8254 timer (IRQ0) is setup
+ * via an override (so it's not on pin 0 of the ioapic),
+ * and at the same time, the pin 0 interrupt is a PCI
+ * type. The gsi > 15 test could cause these two pins
+ * to be shared as IRQ0, and they are not shareable.
+ * So test for this condition, and if necessary, avoid
+ * the pin collision.
+ */
+ if (gsi > 15 || (gsi == 0 && !timer_uses_ioapic_pin_0))
gsi = pci_irq++;
/*
* Don't assign IRQ used by ACPI SCI
diff --git a/arch/x86_64/kernel/pci-gart.c b/arch/x86_64/kernel/pci-gart.c
index 9d3d76c85ae7..2480d3f08a47 100644
--- a/arch/x86_64/kernel/pci-gart.c
+++ b/arch/x86_64/kernel/pci-gart.c
@@ -639,6 +639,14 @@ static int __init pci_iommu_init(void)
return -1;
}
+ i = 0;
+ for_all_nb(dev)
+ i++;
+ if (i > MAX_NB) {
+ printk(KERN_ERR "PCI-GART: Too many northbridges (%ld). Disabled\n", i);
+ return -1;
+ }
+
printk(KERN_INFO "PCI-DMA: using GART IOMMU.\n");
aper_size = info.aper_size * 1024 * 1024;
iommu_size = check_iommu_size(info.aper_base, aper_size);
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index ebc3c33b1c6c..f0870bef24d1 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -571,17 +571,28 @@ static inline void copy_edd(void)
#endif
#define EBDA_ADDR_POINTER 0x40E
-static void __init reserve_ebda_region(void)
+
+unsigned __initdata ebda_addr;
+unsigned __initdata ebda_size;
+
+static void discover_ebda(void)
{
- unsigned int addr;
- /**
+ /*
* there is a real-mode segmented pointer pointing to the
* 4K EBDA area at 0x40E
*/
- addr = *(unsigned short *)phys_to_virt(EBDA_ADDR_POINTER);
- addr <<= 4;
- if (addr)
- reserve_bootmem_generic(addr, PAGE_SIZE);
+ ebda_addr = *(unsigned short *)EBDA_ADDR_POINTER;
+ ebda_addr <<= 4;
+
+ ebda_size = *(unsigned short *)(unsigned long)ebda_addr;
+
+ /* Round EBDA up to pages */
+ if (ebda_size == 0)
+ ebda_size = 1;
+ ebda_size <<= 10;
+ ebda_size = round_up(ebda_size + (ebda_addr & ~PAGE_MASK), PAGE_SIZE);
+ if (ebda_size > 64*1024)
+ ebda_size = 64*1024;
}
void __init setup_arch(char **cmdline_p)
@@ -627,6 +638,8 @@ void __init setup_arch(char **cmdline_p)
check_efer();
+ discover_ebda();
+
init_memory_mapping(0, (end_pfn_map << PAGE_SHIFT));
dmi_scan_machine();
@@ -669,7 +682,8 @@ void __init setup_arch(char **cmdline_p)
reserve_bootmem_generic(0, PAGE_SIZE);
/* reserve ebda region */
- reserve_ebda_region();
+ if (ebda_addr)
+ reserve_bootmem_generic(ebda_addr, ebda_size);
#ifdef CONFIG_SMP
/*
diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c
index 2700b1375c1f..6b87268c5c2e 100644
--- a/arch/x86_64/kernel/traps.c
+++ b/arch/x86_64/kernel/traps.c
@@ -385,6 +385,7 @@ void out_of_line_bug(void)
static DEFINE_SPINLOCK(die_lock);
static int die_owner = -1;
+static unsigned int die_nest_count;
unsigned __kprobes long oops_begin(void)
{
@@ -399,6 +400,7 @@ unsigned __kprobes long oops_begin(void)
else
spin_lock(&die_lock);
}
+ die_nest_count++;
die_owner = cpu;
console_verbose();
bust_spinlocks(1);
@@ -409,7 +411,13 @@ void __kprobes oops_end(unsigned long flags)
{
die_owner = -1;
bust_spinlocks(0);
- spin_unlock_irqrestore(&die_lock, flags);
+ die_nest_count--;
+ if (die_nest_count)
+ /* We still own the lock */
+ local_irq_restore(flags);
+ else
+ /* Nest count reaches zero, release the lock. */
+ spin_unlock_irqrestore(&die_lock, flags);
if (panic_on_oops)
panic("Oops");
}
@@ -464,6 +472,8 @@ void __kprobes die_nmi(char *str, struct pt_regs *regs)
panic("nmi watchdog");
printk("console shuts up ...\n");
oops_end(flags);
+ nmi_exit();
+ local_irq_enable();
do_exit(SIGSEGV);
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.