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Lennert Buytenhek 06c67befee [PATCH] make valid_mmap_phys_addr_range() take a pfn ... Newer ARMs have a 40 bit physical address space, but mapping physical memory above 4G needs a special page table format which we (currently?) do not use for userspace mappings, so what happens instead is that mapping an address >= 4G will happily discard the upper bits and wrap. There is a valid_mmap_phys_addr_range() arch hook where we could check for >= 4G addresses and deny the mapping, but this hook takes an unsigned long address: static inline int valid_mmap_phys_addr_range(unsigned long addr, size_t size); And drivers/char/mem.c:mmap_mem() calls it like this: static int mmap_mem(struct file * file, struct vm_area_struct * vma) { size_t size = vma->vm_end - vma->vm_start; if (!valid_mmap_phys_addr_range(vma->vm_pgoff << PAGE_SHIFT, size)) So that's not much help either. This patch makes the hook take a pfn instead of a phys address. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		19 years ago
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configs	[IA64] tiger_defconfig s/NR_CPUS=4/NR_CPUS=16/	19 years ago
dig	[PATCH] tty: Remove include of screen_info.h from tty.h	19 years ago
hp	[PATCH] irq-flags: IA64: Use the new IRQF_ constants	19 years ago
ia32	[PATCH] audit syscall classes	19 years ago
kernel	[PATCH] make valid_mmap_phys_addr_range() take a pfn	19 years ago
lib	Remove obsolete #include <linux/config.h>	19 years ago
mm	[PATCH] Fix copying of pgdat array on each node for ia64 memory hotplug	19 years ago
oprofile	Remove obsolete #include <linux/config.h>	19 years ago
pci	[PATCH] make valid_mmap_phys_addr_range() take a pfn	19 years ago
scripts	Linux-2.6.12-rc2	20 years ago
sn	[PATCH] tty: Remove include of screen_info.h from tty.h	19 years ago
Kconfig	[PATCH] zoned vm counters: basic ZVC (zoned vm counter) implementation	19 years ago
Kconfig.debug	[PATCH] Move Kprobes and Oprofile to "Instrumentation Support" menu	20 years ago
Makefile	[IA64] add vmlinuz target	19 years ago
defconfig	[IA64] Increase max node count on SN platforms	19 years ago
install.sh	Linux-2.6.12-rc2	20 years ago
module.lds	Linux-2.6.12-rc2	20 years ago