Messages in this thread | | | Date | Tue, 29 Jan 2013 17:54:41 -0800 | Subject | Re: [tip:x86/mm2] x86, boot: enable support load bzImage and ramdisk above 4G | From | Yinghai Lu <> |
| |
On Tue, Jan 29, 2013 at 5:45 PM, tip-bot for Yinghai Lu <yinghai@kernel.org> wrote: > Commit-ID: 8cf52eb755e5c5046d2a5d5d3b64d839677ed8ae > Gitweb: http://git.kernel.org/tip/8cf52eb755e5c5046d2a5d5d3b64d839677ed8ae > Author: Yinghai Lu <yinghai@kernel.org> > AuthorDate: Mon, 28 Jan 2013 20:16:44 -0800 > Committer: H. Peter Anvin <hpa@linux.intel.com> > CommitDate: Tue, 29 Jan 2013 15:30:22 -0800 > > x86, boot: enable support load bzImage and ramdisk above 4G > > xloadflags bit 1 indicates that we can load the kernel and all data > structure above 4G; it is set if kernel is relocatable and 64bit. > > bootloader will check if xloadflags bit1 is set to decicde if > it could load ramdisk and kernel high above 4G. > > bootloader will fill value to ext_ramdisk_image/size for high 32bits > when it load ramdisk above 4G. > kernel use get_ramdisk_image/size to use ext_ramdisk_image/size to get > right positon for ramdisk. > > Signed-off-by: Yinghai Lu <yinghai@kernel.org> > Cc: Rob Landley <rob@landley.net> > Cc: Matt Fleming <matt.fleming@intel.com> > Cc: Gokul Caushik <caushik1@gmail.com> > Cc: Josh Triplett <josh@joshtriplett.org> > Cc: Joe Millenbach <jmillenbach@gmail.com> > Link: http://lkml.kernel.org/r/1359058816-7615-26-git-send-email-yinghai@kernel.org > Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> > --- > arch/x86/boot/compressed/cmdline.c | 2 ++ > arch/x86/boot/compressed/misc.c | 19 +++++++++++++++++++ > arch/x86/boot/header.S | 10 +++++++++- > arch/x86/kernel/head64.c | 2 ++ > arch/x86/kernel/setup.c | 4 ++++ > 5 files changed, 36 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/boot/compressed/cmdline.c b/arch/x86/boot/compressed/cmdline.c > index b4c913c..bffd73b 100644 > --- a/arch/x86/boot/compressed/cmdline.c > +++ b/arch/x86/boot/compressed/cmdline.c > @@ -17,6 +17,8 @@ static unsigned long get_cmd_line_ptr(void) > { > unsigned long cmd_line_ptr = real_mode->hdr.cmd_line_ptr; > > + cmd_line_ptr |= (u64)real_mode->ext_cmd_line_ptr << 32; > + > return cmd_line_ptr; > } > int cmdline_find_option(const char *option, char *buffer, int bufsize) > diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c > index 7cb56c6..5d8dc86 100644 > --- a/arch/x86/boot/compressed/misc.c > +++ b/arch/x86/boot/compressed/misc.c > @@ -318,6 +318,23 @@ static void parse_elf(void *output) > free(phdrs); > } > > +static void sanitize_real_mode(struct boot_params *real_mode) > +{ > + if (real_mode->sentinel) { > + /*fields in boot_params are not valid, clear them */ > + memset(&real_mode->olpc_ofw_header, 0, > + (char *)&real_mode->alt_mem_k - > + (char *)&real_mode->olpc_ofw_header); > + memset(&real_mode->_pad7[0], 0, > + (char *)&real_mode->edd_mbr_sig_buffer[0] - > + (char *)&real_mode->_pad7[0]); > + memset(&real_mode->_pad8[0], 0, > + (char *)&real_mode->eddbuf[0] - > + (char *)&real_mode->_pad8[0]); > + memset(&real_mode->_pad9[0], 0, sizeof(real_mode->_pad9)); > + } > +} > + > asmlinkage void decompress_kernel(void *rmode, memptr heap, > unsigned char *input_data, > unsigned long input_len, > @@ -327,6 +344,8 @@ asmlinkage void decompress_kernel(void *rmode, memptr heap, > > sanitize_boot_params(real_mode); > > + sanitize_real_mode(real_mode); > +
Hi, Peter,
sanitize_real_mode() need to be dropped from this patch.
You already have complete patch sanitize_boot_params() applied before.
Thanks
Yinghai
| |