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Diffstat (limited to 'arch/sparc/kernel/sys_sparc_64.c')
-rw-r--r--arch/sparc/kernel/sys_sparc_64.c65
1 files changed, 41 insertions, 24 deletions
diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c
index 6b92fadb6ec7..dbf118b40601 100644
--- a/arch/sparc/kernel/sys_sparc_64.c
+++ b/arch/sparc/kernel/sys_sparc_64.c
@@ -30,6 +30,7 @@
#include <linux/context_tracking.h>
#include <linux/timex.h>
#include <linux/uaccess.h>
+#include <linux/hugetlb.h>
#include <asm/utrap.h>
#include <asm/unistd.h>
@@ -87,19 +88,33 @@ static inline unsigned long COLOR_ALIGN(unsigned long addr,
return base + off;
}
-unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags)
+static unsigned long get_align_mask(struct file *filp, unsigned long flags)
+{
+ if (filp && is_file_hugepages(filp))
+ return huge_page_mask_align(filp);
+ if (filp || (flags & MAP_SHARED))
+ return PAGE_MASK & (SHMLBA - 1);
+
+ return 0;
+}
+
+unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags, vm_flags_t vm_flags)
{
struct mm_struct *mm = current->mm;
struct vm_area_struct * vma;
unsigned long task_size = TASK_SIZE;
int do_color_align;
- struct vm_unmapped_area_info info;
+ struct vm_unmapped_area_info info = {};
+ bool file_hugepage = false;
+
+ if (filp && is_file_hugepages(filp))
+ file_hugepage = true;
if (flags & MAP_FIXED) {
/* We do not accept a shared mapping if it would violate
* cache aliasing constraints.
*/
- if ((flags & MAP_SHARED) &&
+ if (!file_hugepage && (flags & MAP_SHARED) &&
((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
return -EINVAL;
return addr;
@@ -111,7 +126,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
return -ENOMEM;
do_color_align = 0;
- if (filp || (flags & MAP_SHARED))
+ if ((filp || (flags & MAP_SHARED)) && !file_hugepage)
do_color_align = 1;
if (addr) {
@@ -126,12 +141,12 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
return addr;
}
- info.flags = 0;
info.length = len;
info.low_limit = TASK_UNMAPPED_BASE;
info.high_limit = min(task_size, VA_EXCLUDE_START);
- info.align_mask = do_color_align ? (PAGE_MASK & (SHMLBA - 1)) : 0;
- info.align_offset = pgoff << PAGE_SHIFT;
+ info.align_mask = get_align_mask(filp, flags);
+ if (!file_hugepage)
+ info.align_offset = pgoff << PAGE_SHIFT;
addr = vm_unmapped_area(&info);
if ((addr & ~PAGE_MASK) && task_size > VA_EXCLUDE_END) {
@@ -147,23 +162,27 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
unsigned long
arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
const unsigned long len, const unsigned long pgoff,
- const unsigned long flags)
+ const unsigned long flags, vm_flags_t vm_flags)
{
struct vm_area_struct *vma;
struct mm_struct *mm = current->mm;
unsigned long task_size = STACK_TOP32;
unsigned long addr = addr0;
int do_color_align;
- struct vm_unmapped_area_info info;
+ struct vm_unmapped_area_info info = {};
+ bool file_hugepage = false;
/* This should only ever run for 32-bit processes. */
BUG_ON(!test_thread_flag(TIF_32BIT));
+ if (filp && is_file_hugepages(filp))
+ file_hugepage = true;
+
if (flags & MAP_FIXED) {
/* We do not accept a shared mapping if it would violate
* cache aliasing constraints.
*/
- if ((flags & MAP_SHARED) &&
+ if (!file_hugepage && (flags & MAP_SHARED) &&
((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
return -EINVAL;
return addr;
@@ -173,7 +192,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
return -ENOMEM;
do_color_align = 0;
- if (filp || (flags & MAP_SHARED))
+ if ((filp || (flags & MAP_SHARED)) && !file_hugepage)
do_color_align = 1;
/* requesting a specific address */
@@ -193,8 +212,9 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
info.length = len;
info.low_limit = PAGE_SIZE;
info.high_limit = mm->mmap_base;
- info.align_mask = do_color_align ? (PAGE_MASK & (SHMLBA - 1)) : 0;
- info.align_offset = pgoff << PAGE_SHIFT;
+ info.align_mask = get_align_mask(filp, flags);
+ if (!file_hugepage)
+ info.align_offset = pgoff << PAGE_SHIFT;
addr = vm_unmapped_area(&info);
/*
@@ -218,14 +238,10 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags)
{
unsigned long align_goal, addr = -ENOMEM;
- unsigned long (*get_area)(struct file *, unsigned long,
- unsigned long, unsigned long, unsigned long);
-
- get_area = current->mm->get_unmapped_area;
if (flags & MAP_FIXED) {
/* Ok, don't mess with it. */
- return get_area(NULL, orig_addr, len, pgoff, flags);
+ return mm_get_unmapped_area(NULL, orig_addr, len, pgoff, flags);
}
flags &= ~MAP_SHARED;
@@ -238,7 +254,8 @@ unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, u
align_goal = (64UL * 1024);
do {
- addr = get_area(NULL, orig_addr, len + (align_goal - PAGE_SIZE), pgoff, flags);
+ addr = mm_get_unmapped_area(NULL, orig_addr,
+ len + (align_goal - PAGE_SIZE), pgoff, flags);
if (!(addr & ~PAGE_MASK)) {
addr = (addr + (align_goal - 1UL)) & ~(align_goal - 1UL);
break;
@@ -256,7 +273,7 @@ unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, u
* be obtained.
*/
if (addr & ~PAGE_MASK)
- addr = get_area(NULL, orig_addr, len, pgoff, flags);
+ addr = mm_get_unmapped_area(NULL, orig_addr, len, pgoff, flags);
return addr;
}
@@ -277,7 +294,7 @@ static unsigned long mmap_rnd(void)
return rnd << PAGE_SHIFT;
}
-void arch_pick_mmap_layout(struct mm_struct *mm, struct rlimit *rlim_stack)
+void arch_pick_mmap_layout(struct mm_struct *mm, const struct rlimit *rlim_stack)
{
unsigned long random_factor = mmap_rnd();
unsigned long gap;
@@ -292,7 +309,7 @@ void arch_pick_mmap_layout(struct mm_struct *mm, struct rlimit *rlim_stack)
gap == RLIM_INFINITY ||
sysctl_legacy_va_layout) {
mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
- mm->get_unmapped_area = arch_get_unmapped_area;
+ mm_flags_clear(MMF_TOPDOWN, mm);
} else {
/* We know it's 32-bit */
unsigned long task_size = STACK_TOP32;
@@ -303,7 +320,7 @@ void arch_pick_mmap_layout(struct mm_struct *mm, struct rlimit *rlim_stack)
gap = (task_size / 6 * 5);
mm->mmap_base = PAGE_ALIGN(task_size - gap - random_factor);
- mm->get_unmapped_area = arch_get_unmapped_area_topdown;
+ mm_flags_set(MMF_TOPDOWN, mm);
}
}
@@ -514,7 +531,7 @@ asmlinkage void sparc_breakpoint(struct pt_regs *regs)
#ifdef DEBUG_SPARC_BREAKPOINT
printk ("TRAP: Entering kernel PC=%lx, nPC=%lx\n", regs->tpc, regs->tnpc);
#endif
- force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->tpc, 0);
+ force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->tpc);
#ifdef DEBUG_SPARC_BREAKPOINT
printk ("TRAP: Returning to space: PC=%lx nPC=%lx\n", regs->tpc, regs->tnpc);
#endif
generated by cgit (git 2.34.1) at 2025-12-25 19:47:21 +0000