diff options
| author | Linn Crosetto <linn@hp.com> | 2013-08-13 15:46:41 -0600 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2013-08-13 23:29:19 -0700 |
| commit | 30e46b574a1db7d14404e52dca8e1aa5f5155fd2 (patch) | |
| tree | 830c013b0e1bc37b77590df2998e664c89974571 /arch/x86/include | |
| parent | 2449f343e4adc778de1c3d45b5aa14fe788663f5 (diff) | |
| download | linux-stable-30e46b574a1db7d14404e52dca8e1aa5f5155fd2.tar.gz linux-stable-30e46b574a1db7d14404e52dca8e1aa5f5155fd2.tar.bz2 linux-stable-30e46b574a1db7d14404e52dca8e1aa5f5155fd2.zip | |
x86: avoid remapping data in parse_setup_data()
Type SETUP_PCI, added by setup_efi_pci(), may advertise a ROM size
larger than early_memremap() is able to handle, which is currently
limited to 256kB. If this occurs it leads to a NULL dereference in
parse_setup_data().
To avoid this, remap the setup_data header and allow parsing functions
for individual types to handle their own data remapping.
Signed-off-by: Linn Crosetto <linn@hp.com>
Link: http://lkml.kernel.org/r/1376430401-67445-1-git-send-email-linn@hp.com
Acked-by: Yinghai Lu <yinghai@kernel.org>
Reviewed-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/e820.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h index cccd07fa5e3a..779c2efe2e97 100644 --- a/arch/x86/include/asm/e820.h +++ b/arch/x86/include/asm/e820.h @@ -29,7 +29,7 @@ extern void e820_setup_gap(void); extern int e820_search_gap(unsigned long *gapstart, unsigned long *gapsize, unsigned long start_addr, unsigned long long end_addr); struct setup_data; -extern void parse_e820_ext(struct setup_data *data); +extern void parse_e820_ext(u64 phys_addr, u32 data_len); #if defined(CONFIG_X86_64) || \ (defined(CONFIG_X86_32) && defined(CONFIG_HIBERNATION)) |