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Message-Id: <20070425080846.3b03299c.randy.dunlap@oracle.com>
Date: Wed, 25 Apr 2007 08:08:46 -0700
From: Randy Dunlap <randy.dunlap@...cle.com>
To: linux-kernel@...r.kernel.org
Cc: akpm@...ux-foundation.org, y-goto@...fujitsu.com, apw@...dowen.org,
mel@....ul.ie
Subject: Re: +
handle-kernelcore=-boot-parameter-in-common-code-to-avoid-boot-problem-on-ia64.patch
added to -mm tree
On Tue, 24 Apr 2007 14:04:28 -0700 akpm@...ux-foundation.org wrote:
>
> The patch titled
> Handle kernelcore= boot parameter in common code to avoid boot problem on IA64
> has been added to the -mm tree. Its filename is
> handle-kernelcore=-boot-parameter-in-common-code-to-avoid-boot-problem-on-ia64.patch
>
> *** Remember to use Documentation/SubmitChecklist when testing your code ***
>
> See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
> out what to do about this
>
> ------------------------------------------------------
> Subject: Handle kernelcore= boot parameter in common code to avoid boot problem on IA64
> From: Yasunori Goto <y-goto@...fujitsu.com>
>
> When "kernelcore" boot option is specified, kernel can't boot up on ia64
> because of an infinite loop. In addition, the parsing code can be handled
> in an architecture-independent manner.
Is this boot option documented anywhere in the kernel source tree?
> This patch patches uses common code to handle the kernelcore= parameter.
> It is only available to architectures that support arch-independent
> zone-sizing (i.e. define CONFIG_ARCH_POPULATES_NODE_MAP). Other
> architectures will ignore the boot parameter.
>
> This effectively removes the following arch-specific patches;
>
> ia64-specify-amount-of-kernel-memory-at-boot-time.patch
> ppc-and-powerpc-specify-amount-of-kernel-memory-at-boot-time.patch
> x86_64-specify-amount-of-kernel-memory-at-boot-time.patch
> x86-specify-amount-of-kernel-memory-at-boot-time.patch
>
> Signed-off-by: Yasunori Goto <y-goto@...fujitsu.com>
> Signed-off-by: Mel Gorman <mel@....ul.ie>
> Acked-by: Andy Whitcroft <apw@...dowen.org>
> Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
> ---
>
> arch/i386/kernel/setup.c | 1 -
> arch/ia64/kernel/efi.c | 2 --
> arch/powerpc/kernel/prom.c | 1 -
> arch/ppc/mm/init.c | 2 --
> arch/x86_64/kernel/e820.c | 1 -
> include/linux/mm.h | 1 -
> mm/page_alloc.c | 3 +++
> 7 files changed, 3 insertions(+), 8 deletions(-)
>
> diff -puN arch/i386/kernel/setup.c~handle-kernelcore=-boot-parameter-in-common-code-to-avoid-boot-problem-on-ia64 arch/i386/kernel/setup.c
> --- a/arch/i386/kernel/setup.c~handle-kernelcore=-boot-parameter-in-common-code-to-avoid-boot-problem-on-ia64
> +++ a/arch/i386/kernel/setup.c
> @@ -195,7 +195,6 @@ static int __init parse_mem(char *arg)
> return 0;
> }
> early_param("mem", parse_mem);
> -early_param("kernelcore", cmdline_parse_kernelcore);
>
> #ifdef CONFIG_PROC_VMCORE
> /* elfcorehdr= specifies the location of elf core header
> diff -puN arch/ia64/kernel/efi.c~handle-kernelcore=-boot-parameter-in-common-code-to-avoid-boot-problem-on-ia64 arch/ia64/kernel/efi.c
> --- a/arch/ia64/kernel/efi.c~handle-kernelcore=-boot-parameter-in-common-code-to-avoid-boot-problem-on-ia64
> +++ a/arch/ia64/kernel/efi.c
> @@ -423,8 +423,6 @@ efi_init (void)
> mem_limit = memparse(cp + 4, &cp);
> } else if (memcmp(cp, "max_addr=", 9) == 0) {
> max_addr = GRANULEROUNDDOWN(memparse(cp + 9, &cp));
> - } else if (memcmp(cp, "kernelcore=",11) == 0) {
> - cmdline_parse_kernelcore(cp+11);
> } else if (memcmp(cp, "min_addr=", 9) == 0) {
> min_addr = GRANULEROUNDDOWN(memparse(cp + 9, &cp));
> } else {
> diff -puN arch/powerpc/kernel/prom.c~handle-kernelcore=-boot-parameter-in-common-code-to-avoid-boot-problem-on-ia64 arch/powerpc/kernel/prom.c
> --- a/arch/powerpc/kernel/prom.c~handle-kernelcore=-boot-parameter-in-common-code-to-avoid-boot-problem-on-ia64
> +++ a/arch/powerpc/kernel/prom.c
> @@ -432,7 +432,6 @@ static int __init early_parse_mem(char *
> return 0;
> }
> early_param("mem", early_parse_mem);
> -early_param("kernelcore", cmdline_parse_kernelcore);
>
> /*
> * The device tree may be allocated below our memory limit, or inside the
> diff -puN arch/ppc/mm/init.c~handle-kernelcore=-boot-parameter-in-common-code-to-avoid-boot-problem-on-ia64 arch/ppc/mm/init.c
> --- a/arch/ppc/mm/init.c~handle-kernelcore=-boot-parameter-in-common-code-to-avoid-boot-problem-on-ia64
> +++ a/arch/ppc/mm/init.c
> @@ -214,8 +214,6 @@ void MMU_setup(void)
> }
> }
>
> -early_param("kernelcore", cmdline_parse_kernelcore);
> -
> /*
> * MMU_init sets up the basic memory mappings for the kernel,
> * including both RAM and possibly some I/O regions,
> diff -puN arch/x86_64/kernel/e820.c~handle-kernelcore=-boot-parameter-in-common-code-to-avoid-boot-problem-on-ia64 arch/x86_64/kernel/e820.c
> --- a/arch/x86_64/kernel/e820.c~handle-kernelcore=-boot-parameter-in-common-code-to-avoid-boot-problem-on-ia64
> +++ a/arch/x86_64/kernel/e820.c
> @@ -618,7 +618,6 @@ static int __init parse_memopt(char *p)
> return 0;
> }
> early_param("mem", parse_memopt);
> -early_param("kernelcore", cmdline_parse_kernelcore);
>
> static int userdef __initdata;
>
> diff -puN include/linux/mm.h~handle-kernelcore=-boot-parameter-in-common-code-to-avoid-boot-problem-on-ia64 include/linux/mm.h
> --- a/include/linux/mm.h~handle-kernelcore=-boot-parameter-in-common-code-to-avoid-boot-problem-on-ia64
> +++ a/include/linux/mm.h
> @@ -988,7 +988,6 @@ extern unsigned long find_max_pfn_with_a
> extern void free_bootmem_with_active_regions(int nid,
> unsigned long max_low_pfn);
> extern void sparse_memory_present_with_active_regions(int nid);
> -extern int cmdline_parse_kernelcore(char *p);
> #ifndef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
> extern int early_pfn_to_nid(unsigned long pfn);
> #endif /* CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID */
> diff -puN mm/page_alloc.c~handle-kernelcore=-boot-parameter-in-common-code-to-avoid-boot-problem-on-ia64 mm/page_alloc.c
> --- a/mm/page_alloc.c~handle-kernelcore=-boot-parameter-in-common-code-to-avoid-boot-problem-on-ia64
> +++ a/mm/page_alloc.c
> @@ -3542,6 +3542,9 @@ int __init cmdline_parse_kernelcore(char
>
> return 0;
> }
> +
> +early_param("kernelcore", cmdline_parse_kernelcore);
> +
> #endif /* CONFIG_ARCH_POPULATES_NODE_MAP */
>
> /**
> _
---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
-
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