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-rw-r--r--arch/parisc/include/asm/Kbuild1
-rw-r--r--arch/parisc/include/asm/agp.h21
-rw-r--r--arch/parisc/include/asm/dma-mapping.h2
-rw-r--r--arch/parisc/include/asm/page.h4
-rw-r--r--arch/parisc/include/asm/pgtable.h40
-rw-r--r--arch/parisc/kernel/drivers.c4
-rw-r--r--arch/parisc/kernel/firmware.c5
-rw-r--r--arch/parisc/kernel/process.c2
-rw-r--r--arch/parisc/kernel/ptrace.c21
-rw-r--r--arch/parisc/kernel/vmlinux.lds.S1
10 files changed, 60 insertions, 41 deletions
diff --git a/arch/parisc/include/asm/Kbuild b/arch/parisc/include/asm/Kbuild
index e6e7f74c8ac9..4fb596d94c89 100644
--- a/arch/parisc/include/asm/Kbuild
+++ b/arch/parisc/include/asm/Kbuild
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
generated-y += syscall_table_32.h
generated-y += syscall_table_64.h
+generic-y += agp.h
generic-y += kvm_para.h
generic-y += mcs_spinlock.h
generic-y += user.h
diff --git a/arch/parisc/include/asm/agp.h b/arch/parisc/include/asm/agp.h
deleted file mode 100644
index 14ae54cfd368..000000000000
--- a/arch/parisc/include/asm/agp.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_PARISC_AGP_H
-#define _ASM_PARISC_AGP_H
-
-/*
- * PARISC specific AGP definitions.
- * Copyright (c) 2006 Kyle McMartin <kyle@parisc-linux.org>
- *
- */
-
-#define map_page_into_agp(page) do { } while (0)
-#define unmap_page_from_agp(page) do { } while (0)
-#define flush_agp_cache() mb()
-
-/* GATT allocation. Returns/accepts GATT kernel virtual address. */
-#define alloc_gatt_pages(order) \
- ((char *)__get_free_pages(GFP_KERNEL, (order)))
-#define free_gatt_pages(table, order) \
- free_pages((unsigned long)(table), (order))
-
-#endif /* _ASM_PARISC_AGP_H */
diff --git a/arch/parisc/include/asm/dma-mapping.h b/arch/parisc/include/asm/dma-mapping.h
index d5bd94247371..635665004fe6 100644
--- a/arch/parisc/include/asm/dma-mapping.h
+++ b/arch/parisc/include/asm/dma-mapping.h
@@ -21,7 +21,7 @@
extern const struct dma_map_ops *hppa_dma_ops;
-static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
+static inline const struct dma_map_ops *get_arch_dma_ops(void)
{
return hppa_dma_ops;
}
diff --git a/arch/parisc/include/asm/page.h b/arch/parisc/include/asm/page.h
index 6faaaa3ebe9b..667e703c0e8f 100644
--- a/arch/parisc/include/asm/page.h
+++ b/arch/parisc/include/asm/page.h
@@ -155,10 +155,6 @@ extern int npmem_ranges;
#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET)
#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET))
-#ifndef CONFIG_SPARSEMEM
-#define pfn_valid(pfn) ((pfn) < max_mapnr)
-#endif
-
#ifdef CONFIG_HUGETLB_PAGE
#define HPAGE_SHIFT PMD_SHIFT /* fixed for transparent huge pages */
#define HPAGE_SIZE ((1UL) << HPAGE_SHIFT)
diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h
index ea357430aafe..e2950f5db7c9 100644
--- a/arch/parisc/include/asm/pgtable.h
+++ b/arch/parisc/include/asm/pgtable.h
@@ -218,6 +218,9 @@ extern void __update_cache(pte_t pte);
#define _PAGE_KERNEL_RWX (_PAGE_KERNEL_EXEC | _PAGE_WRITE)
#define _PAGE_KERNEL (_PAGE_KERNEL_RO | _PAGE_WRITE)
+/* We borrow bit 23 to store the exclusive marker in swap PTEs. */
+#define _PAGE_SWP_EXCLUSIVE _PAGE_ACCESSED
+
/* The pgd/pmd contains a ptr (in phys addr space); since all pgds/pmds
* are page-aligned, we don't care about the PAGE_OFFSET bits, except
* for a few meta-information bits, so we shift the address to be
@@ -394,17 +397,48 @@ extern void paging_init (void);
#define update_mmu_cache(vms,addr,ptep) __update_cache(*ptep)
-/* Encode and de-code a swap entry */
-
+/*
+ * Encode/decode swap entries and swap PTEs. Swap PTEs are all PTEs that
+ * are !pte_none() && !pte_present().
+ *
+ * Format of swap PTEs (32bit):
+ *
+ * 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * <---------------- offset -----------------> P E <ofs> < type ->
+ *
+ * E is the exclusive marker that is not stored in swap entries.
+ * _PAGE_PRESENT (P) must be 0.
+ *
+ * For the 64bit version, the offset is extended by 32bit.
+ */
#define __swp_type(x) ((x).val & 0x1f)
#define __swp_offset(x) ( (((x).val >> 6) & 0x7) | \
(((x).val >> 8) & ~0x7) )
-#define __swp_entry(type, offset) ((swp_entry_t) { (type) | \
+#define __swp_entry(type, offset) ((swp_entry_t) { \
+ ((type) & 0x1f) | \
((offset & 0x7) << 6) | \
((offset & ~0x7) << 8) })
#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
+static inline int pte_swp_exclusive(pte_t pte)
+{
+ return pte_val(pte) & _PAGE_SWP_EXCLUSIVE;
+}
+
+static inline pte_t pte_swp_mkexclusive(pte_t pte)
+{
+ pte_val(pte) |= _PAGE_SWP_EXCLUSIVE;
+ return pte;
+}
+
+static inline pte_t pte_swp_clear_exclusive(pte_t pte)
+{
+ pte_val(pte) &= ~_PAGE_SWP_EXCLUSIVE;
+ return pte;
+}
+
static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep)
{
pte_t pte;
diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c
index e7ee0c0c91d3..28f47285d448 100644
--- a/arch/parisc/kernel/drivers.c
+++ b/arch/parisc/kernel/drivers.c
@@ -552,7 +552,7 @@ static int parisc_generic_match(struct device *dev, struct device_driver *drv)
return match_device(to_parisc_driver(drv), to_parisc_device(dev));
}
-static ssize_t make_modalias(struct device *dev, char *buf)
+static ssize_t make_modalias(const struct device *dev, char *buf)
{
const struct parisc_device *padev = to_parisc_device(dev);
const struct parisc_device_id *id = &padev->id;
@@ -562,7 +562,7 @@ static ssize_t make_modalias(struct device *dev, char *buf)
(u32)id->sversion);
}
-static int parisc_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int parisc_uevent(const struct device *dev, struct kobj_uevent_env *env)
{
const struct parisc_device *padev;
char modalias[40];
diff --git a/arch/parisc/kernel/firmware.c b/arch/parisc/kernel/firmware.c
index 4dfe1f49c5c8..6817892a2c58 100644
--- a/arch/parisc/kernel/firmware.c
+++ b/arch/parisc/kernel/firmware.c
@@ -1303,7 +1303,7 @@ static char iodc_dbuf[4096] __page_aligned_bss;
*/
int pdc_iodc_print(const unsigned char *str, unsigned count)
{
- unsigned int i;
+ unsigned int i, found = 0;
unsigned long flags;
count = min_t(unsigned int, count, sizeof(iodc_dbuf));
@@ -1315,6 +1315,7 @@ int pdc_iodc_print(const unsigned char *str, unsigned count)
iodc_dbuf[i+0] = '\r';
iodc_dbuf[i+1] = '\n';
i += 2;
+ found = 1;
goto print;
default:
iodc_dbuf[i] = str[i];
@@ -1330,7 +1331,7 @@ print:
__pa(pdc_result), 0, __pa(iodc_dbuf), i, 0);
spin_unlock_irqrestore(&pdc_lock, flags);
- return i;
+ return i - found;
}
#if !defined(BOOTLOADER)
diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c
index c4f8374c7018..c064719b49b0 100644
--- a/arch/parisc/kernel/process.c
+++ b/arch/parisc/kernel/process.c
@@ -183,8 +183,6 @@ void arch_cpu_idle_dead(void)
void __cpuidle arch_cpu_idle(void)
{
- raw_local_irq_enable();
-
/* nop on real hardware, qemu will idle sleep. */
asm volatile("or %%r10,%%r10,%%r10\n":::);
}
diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c
index 69c62933e952..ceb45f51d52e 100644
--- a/arch/parisc/kernel/ptrace.c
+++ b/arch/parisc/kernel/ptrace.c
@@ -126,6 +126,12 @@ long arch_ptrace(struct task_struct *child, long request,
unsigned long tmp;
long ret = -EIO;
+ unsigned long user_regs_struct_size = sizeof(struct user_regs_struct);
+#ifdef CONFIG_64BIT
+ if (is_compat_task())
+ user_regs_struct_size /= 2;
+#endif
+
switch (request) {
/* Read the word at location addr in the USER area. For ptraced
@@ -166,7 +172,7 @@ long arch_ptrace(struct task_struct *child, long request,
addr >= sizeof(struct pt_regs))
break;
if (addr == PT_IAOQ0 || addr == PT_IAOQ1) {
- data |= 3; /* ensure userspace privilege */
+ data |= PRIV_USER; /* ensure userspace privilege */
}
if ((addr >= PT_GR1 && addr <= PT_GR31) ||
addr == PT_IAOQ0 || addr == PT_IAOQ1 ||
@@ -181,14 +187,14 @@ long arch_ptrace(struct task_struct *child, long request,
return copy_regset_to_user(child,
task_user_regset_view(current),
REGSET_GENERAL,
- 0, sizeof(struct user_regs_struct),
+ 0, user_regs_struct_size,
datap);
case PTRACE_SETREGS: /* Set all gp regs in the child. */
return copy_regset_from_user(child,
task_user_regset_view(current),
REGSET_GENERAL,
- 0, sizeof(struct user_regs_struct),
+ 0, user_regs_struct_size,
datap);
case PTRACE_GETFPREGS: /* Get the child FPU state. */
@@ -285,7 +291,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
if (addr >= sizeof(struct pt_regs))
break;
if (addr == PT_IAOQ0+4 || addr == PT_IAOQ1+4) {
- data |= 3; /* ensure userspace privilege */
+ data |= PRIV_USER; /* ensure userspace privilege */
}
if (addr >= PT_FR0 && addr <= PT_FR31 + 4) {
/* Special case, fp regs are 64 bits anyway */
@@ -302,6 +308,11 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
}
}
break;
+ case PTRACE_GETREGS:
+ case PTRACE_SETREGS:
+ case PTRACE_GETFPREGS:
+ case PTRACE_SETFPREGS:
+ return arch_ptrace(child, request, addr, data);
default:
ret = compat_ptrace_request(child, request, addr, data);
@@ -484,7 +495,7 @@ static void set_reg(struct pt_regs *regs, int num, unsigned long val)
case RI(iaoq[0]):
case RI(iaoq[1]):
/* set 2 lowest bits to ensure userspace privilege: */
- regs->iaoq[num - RI(iaoq[0])] = val | 3;
+ regs->iaoq[num - RI(iaoq[0])] = val | PRIV_USER;
return;
case RI(sar): regs->sar = val;
return;
diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S
index 2769eb991f58..1aaa2ca09800 100644
--- a/arch/parisc/kernel/vmlinux.lds.S
+++ b/arch/parisc/kernel/vmlinux.lds.S
@@ -86,7 +86,6 @@ SECTIONS
TEXT_TEXT
LOCK_TEXT
SCHED_TEXT
- CPUIDLE_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
SOFTIRQENTRY_TEXT
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.