lkml.org 
[lkml]   [2013]   [Jan]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    Subject[tip:x86/mm2] x86: Merge early kernel reserve for 32bit and 64bit
    Commit-ID:  6c902b656c4a808d9c6f40a387b166455efecd62
    Gitweb: http://git.kernel.org/tip/6c902b656c4a808d9c6f40a387b166455efecd62
    Author: Yinghai Lu <yinghai@kernel.org>
    AuthorDate: Thu, 24 Jan 2013 12:20:12 -0800
    Committer: H. Peter Anvin <hpa@linux.intel.com>
    CommitDate: Tue, 29 Jan 2013 19:32:58 -0800

    x86: Merge early kernel reserve for 32bit and 64bit

    They are the same, and we could move them out from head32/64.c to setup.c.

    We are using memblock, and it could handle overlapping properly, so
    we don't need to reserve some at first to hold the location, and just
    need to make sure we reserve them before we are using memblock to find
    free mem to use.

    Signed-off-by: Yinghai Lu <yinghai@kernel.org>
    Link: http://lkml.kernel.org/r/1359058816-7615-32-git-send-email-yinghai@kernel.org
    Cc: Alexander Duyck <alexander.h.duyck@intel.com>
    Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
    ---
    arch/x86/kernel/head32.c | 9 ---------
    arch/x86/kernel/head64.c | 9 ---------
    arch/x86/kernel/setup.c | 9 +++++++++
    3 files changed, 9 insertions(+), 18 deletions(-)

    diff --git a/arch/x86/kernel/head32.c b/arch/x86/kernel/head32.c
    index a795b54..138463a 100644
    --- a/arch/x86/kernel/head32.c
    +++ b/arch/x86/kernel/head32.c
    @@ -33,9 +33,6 @@ void __init i386_start_kernel(void)
    {
    sanitize_boot_params(&boot_params);

    - memblock_reserve(__pa_symbol(&_text),
    - __pa_symbol(&__bss_stop) - __pa_symbol(&_text));
    -
    /* Call the subarch specific early setup function */
    switch (boot_params.hdr.hardware_subarch) {
    case X86_SUBARCH_MRST:
    @@ -49,11 +46,5 @@ void __init i386_start_kernel(void)
    break;
    }

    - /*
    - * At this point everything still needed from the boot loader
    - * or BIOS or kernel text should be early reserved or marked not
    - * RAM in e820. All other memory is free game.
    - */
    -
    start_kernel();
    }
    diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
    index 6873b07..57334f4 100644
    --- a/arch/x86/kernel/head64.c
    +++ b/arch/x86/kernel/head64.c
    @@ -186,16 +186,7 @@ void __init x86_64_start_reservations(char *real_mode_data)
    if (!boot_params.hdr.version)
    copy_bootdata(__va(real_mode_data));

    - memblock_reserve(__pa_symbol(&_text),
    - __pa_symbol(&__bss_stop) - __pa_symbol(&_text));
    -
    reserve_ebda_region();

    - /*
    - * At this point everything still needed from the boot loader
    - * or BIOS or kernel text should be early reserved or marked not
    - * RAM in e820. All other memory is free game.
    - */
    -
    start_kernel();
    }
    diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
    index 5dc47c3..a74701a 100644
    --- a/arch/x86/kernel/setup.c
    +++ b/arch/x86/kernel/setup.c
    @@ -805,8 +805,17 @@ early_param("reservelow", parse_reservelow);

    void __init setup_arch(char **cmdline_p)
    {
    + memblock_reserve(__pa_symbol(_text),
    + (unsigned long)__bss_stop - (unsigned long)_text);
    +
    early_reserve_initrd();

    + /*
    + * At this point everything still needed from the boot loader
    + * or BIOS or kernel text should be early reserved or marked not
    + * RAM in e820. All other memory is free game.
    + */
    +
    #ifdef CONFIG_X86_32
    memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
    visws_early_detect();

    \
     
     \ /
      Last update: 2013-01-30 05:41    [W:4.299 / U:0.064 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site