scripts: link-vmlinux: Don't pass page offset to kallsyms if XIP Kernel

When Kernel is executed in place from ROM, the symbol addresses can be
lower than the page offset.

Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Tested-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Michal Marek <mmarek@suse.cz>

0 files changed, 0 insertions, 0 deletions

path: root/mm/sparse.c

/*
 * inode.c
 *
 * Copyright (c) 1999 Al Smith
 *
 * Portions derived from work (c) 1995,1996 Christian Vogelgsang,
 *              and from work (c) 1998 Mike Shaver.
 */

#include <linux/efs_fs.h>
#include <linux/efs_fs_sb.h>
#include <linux/buffer_head.h>
#include <linux/module.h>
#include <linux/fs.h>

static int efs_readpage(struct file *file, struct page *page)
{
	return block_read_full_page(page,efs_get_block);
}
static sector_t _efs_bmap(struct address_space *mapping, sector_t block)
{
	return generic_block_bmap(mapping,block,efs_get_block);
}
static const struct address_space_operations efs_aops = {
	.readpage = efs_readpage,
	.sync_page = block_sync_page,
	.bmap = _efs_bmap
};

static inline void extent_copy(efs_extent *src, efs_extent *dst) {
	/*
	 * this is slightly evil. it doesn't just copy
	 * efs_extent from src to dst, it also mangles
	 * the bits so that dst ends up in cpu byte-order.
	 */

	dst->cooked.ex_magic  =  (unsigned int) src->raw[0];
	dst->cooked.ex_bn     = ((unsigned int) src->raw[1] << 16) |
				((unsigned int) src->raw[2] <<  8) |
				((unsigned int) src->raw[3] <<  0);
	dst->cooked.ex_length =  (unsigned int) src->raw[4];
	dst->cooked.ex_offset = ((unsigned int) src->raw[5] << 16) |
				((unsigned int) src->raw[6] <<  8) |
				((unsigned int) src->raw[7] <<  0);
	return;
}

void efs_read_inode(struct inode *inode)
{
	int i, inode_index;
	dev_t device;
	u32 rdev;
	struct buffer_head *bh;
	struct efs_sb_info    *sb = SUPER_INFO(inode->i_sb);
	struct efs_inode_info *in = INODE_INFO(inode);
	efs_block_t block, offset;
	struct efs_dinode *efs_inode;
  
	/*
	** EFS layout:
	**
	** |   cylinder group    |   cylinder group    |   cylinder group ..etc
	** |inodes|data          |inodes|data          |inodes|data       ..etc
	**
	** work out the inode block index, (considering initially that the
	** inodes are stored as consecutive blocks). then work out the block
	** number of that inode given the above layout, and finally the
	** offset of the inode within that block.
	*/

	inode_index = inode->i_ino /
		(EFS_BLOCKSIZE / sizeof(struct efs_dinode));

	block = sb->fs_start + sb->first_block + 
		(sb->group_size * (inode_index / sb->inode_blocks)) +
		(inode_index % sb->inode_blocks);

	offset = (inode->i_ino %
			(EFS_BLOCKSIZE / sizeof(struct efs_dinode))) *
		sizeof(struct efs_dinode);

	bh = sb_bread(inode->i_sb, block);
	if (!bh) {
		printk(KERN_WARNING "EFS: bread() failed at block %d\n", block);
		goto read_inode_error;
	}

	efs_inode = (struct efs_dinode *) (bh->b_data + offset);
    
	inode->i_mode  = be16_to_cpu(efs_inode->di_mode);
	inode->i_nlink = be16_to_cpu(efs_inode->di_nlink);
	inode->i_uid   = (uid_t)be16_to_cpu(efs_inode->di_uid);
	inode->i_gid   = (gid_t)be16_to_cpu(efs_inode->di_gid);
	inode->i_size  = be32_to_cpu(efs_inode->di_size);
	inode->i_atime.tv_sec = be32_to_cpu(efs_inode->di_atime);
	inode->i_mtime.tv_sec = be32_to_cpu(efs_inode->di_mtime);
	inode->i_ctime.tv_sec = be32_to_cpu(efs_inode->di_ctime);
	inode->i_atime.tv_nsec = inode->i_mtime.tv_nsec = inode->i_ctime.tv_nsec = 0;

	/* this is the number of blocks in the file */
	if (inode->i_size == 0) {
		inode->i_blocks = 0;
	} else {
		inode->i_blocks = ((inode->i_size - 1) >> EFS_BLOCKSIZE_BITS) + 1;
	}

	rdev = be16_to_cpu(efs_inode->di_u.di_dev.odev);
	if (rdev == 0xffff) {
		rdev = be32_to_cpu(efs_inode->di_u.di_dev.ndev);
		if (sysv_major(rdev) > 0xfff)
			device = 0;
		else