Re: [Part1 PATCH v5 09/22] x86, ACPI: Find acpi tables in initrd early from head_32.S/head64.c
On Thu, Jun 13, 2013 at 09:02:56PM +0800, Tang Chen wrote: > From: Yinghai Lu Ditto for the opening. Probably not a must, I suppose, but would be very nice. > head64.c could use #PF handler setup page table to access initrd before > init mem mapping and initrd relocating. > > head_32.S could use 32bit flat mode to access initrd before init mem > mapping initrd relocating. > > This patch introduces x86_acpi_override_find(), which is called from > head_32.S/head64.c, to replace acpi_initrd_override_find(). So that we > can makes 32bit and 64 bit more consistent. > > -v2: use inline function in header file instead according to tj. > also still need to keep #idef head_32.S to avoid compiling error. > -v3: need to move down reserve_initrd() after acpi_initrd_override_copy(), > to make sure we are using right address. > > Signed-off-by: Yinghai Lu > Cc: Pekka Enberg > Cc: Jacob Shin > Cc: Rafael J. Wysocki > Cc: linux-a...@vger.kernel.org > Tested-by: Thomas Renninger > Reviewed-by: Tang Chen > Tested-by: Tang Chen Other than that, Acked-by: Tejun Heo Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [Part1 PATCH v5 09/22] x86, ACPI: Find acpi tables in initrd early from head_32.S/head64.c
On Thu, Jun 13, 2013 at 09:02:56PM +0800, Tang Chen wrote: From: Yinghai Lu ying...@kernel.org Ditto for the opening. Probably not a must, I suppose, but would be very nice. head64.c could use #PF handler setup page table to access initrd before init mem mapping and initrd relocating. head_32.S could use 32bit flat mode to access initrd before init mem mapping initrd relocating. This patch introduces x86_acpi_override_find(), which is called from head_32.S/head64.c, to replace acpi_initrd_override_find(). So that we can makes 32bit and 64 bit more consistent. -v2: use inline function in header file instead according to tj. also still need to keep #idef head_32.S to avoid compiling error. -v3: need to move down reserve_initrd() after acpi_initrd_override_copy(), to make sure we are using right address. Signed-off-by: Yinghai Lu ying...@kernel.org Cc: Pekka Enberg penb...@kernel.org Cc: Jacob Shin jacob.s...@amd.com Cc: Rafael J. Wysocki r...@sisk.pl Cc: linux-a...@vger.kernel.org Tested-by: Thomas Renninger tr...@suse.de Reviewed-by: Tang Chen tangc...@cn.fujitsu.com Tested-by: Tang Chen tangc...@cn.fujitsu.com Other than that, Acked-by: Tejun Heo t...@kernel.org Thanks. -- tejun -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH v5 09/22] x86, ACPI: Find acpi tables in initrd early from head_32.S/head64.c
head64.c could use #PF handler set page table to access initrd before init mem mapping and initrd relocating. head_32.S could use 32bit flat mode to access initrd before init mem mapping initrd relocating. That make 32bit and 64 bit more consistent. -v2: use inline function in header file instead according to tj. also still need to keep #idef head_32.S to avoid compiling error. -v3: need to move down reserve_initrd() after acpi_initrd_override_copy(), to make sure we are using right address. Signed-off-by: Yinghai Lu Cc: Pekka Enberg Cc: Jacob Shin Cc: Rafael J. Wysocki Cc: linux-a...@vger.kernel.org Tested-by: Thomas Renninger Reviewed-by: Tang Chen Tested-by: Tang Chen --- arch/x86/include/asm/setup.h | 6 ++ arch/x86/kernel/head64.c | 2 ++ arch/x86/kernel/head_32.S| 4 arch/x86/kernel/setup.c | 34 ++ 4 files changed, 42 insertions(+), 4 deletions(-) diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h index 4f71d48..6f885b7 100644 --- a/arch/x86/include/asm/setup.h +++ b/arch/x86/include/asm/setup.h @@ -42,6 +42,12 @@ extern void visws_early_detect(void); static inline void visws_early_detect(void) { } #endif +#ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE +void x86_acpi_override_find(void); +#else +static inline void x86_acpi_override_find(void) { } +#endif + extern unsigned long saved_video_mode; extern void reserve_standard_io_resources(void); diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 55b6761..229b281 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -175,6 +175,8 @@ void __init x86_64_start_kernel(char * real_mode_data) if (console_loglevel == 10) early_printk("Kernel alive\n"); + x86_acpi_override_find(); + clear_page(init_level4_pgt); /* set init_level4_pgt kernel high mapping*/ init_level4_pgt[511] = early_level4_pgt[511]; diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S index 73afd11..ca08f0e 100644 --- a/arch/x86/kernel/head_32.S +++ b/arch/x86/kernel/head_32.S @@ -149,6 +149,10 @@ ENTRY(startup_32) call load_ucode_bsp #endif +#ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE + call x86_acpi_override_find +#endif + /* * Initialize page tables. This creates a PDE and a set of page * tables, which are located immediately beyond __brk_base. The variable diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 142e042..d11b1b7 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -421,6 +421,34 @@ static void __init reserve_initrd(void) } #endif /* CONFIG_BLK_DEV_INITRD */ +#ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE +void __init x86_acpi_override_find(void) +{ + unsigned long ramdisk_image, ramdisk_size; + unsigned char *p = NULL; + +#ifdef CONFIG_X86_32 + struct boot_params *boot_params_p; + + /* +* 32bit is from head_32.S, and it is 32bit flat mode. +* So need to use phys address to access global variables. +*/ + boot_params_p = (struct boot_params *)__pa_nodebug(_params); + ramdisk_image = get_ramdisk_image(boot_params_p); + ramdisk_size = get_ramdisk_size(boot_params_p); + p = (unsigned char *)ramdisk_image; + acpi_initrd_override_find(p, ramdisk_size, true); +#else + ramdisk_image = get_ramdisk_image(_params); + ramdisk_size = get_ramdisk_size(_params); + if (ramdisk_image) + p = __va(ramdisk_image); + acpi_initrd_override_find(p, ramdisk_size, false); +#endif +} +#endif + static void __init parse_setup_data(void) { struct setup_data *data; @@ -1117,12 +1145,10 @@ void __init setup_arch(char **cmdline_p) /* Allocate bigger log buffer */ setup_log_buf(1); - reserve_initrd(); - - acpi_initrd_override_find((void *)initrd_start, - initrd_end - initrd_start, false); acpi_initrd_override_copy(); + reserve_initrd(); + reserve_crashkernel(); vsmp_init(); -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH v5 09/22] x86, ACPI: Find acpi tables in initrd early from head_32.S/head64.c
head64.c could use #PF handler set page table to access initrd before init mem mapping and initrd relocating. head_32.S could use 32bit flat mode to access initrd before init mem mapping initrd relocating. That make 32bit and 64 bit more consistent. -v2: use inline function in header file instead according to tj. also still need to keep #idef head_32.S to avoid compiling error. -v3: need to move down reserve_initrd() after acpi_initrd_override_copy(), to make sure we are using right address. Signed-off-by: Yinghai Lu ying...@kernel.org Cc: Pekka Enberg penb...@kernel.org Cc: Jacob Shin jacob.s...@amd.com Cc: Rafael J. Wysocki r...@sisk.pl Cc: linux-a...@vger.kernel.org Tested-by: Thomas Renninger tr...@suse.de Reviewed-by: Tang Chen tangc...@cn.fujitsu.com Tested-by: Tang Chen tangc...@cn.fujitsu.com --- arch/x86/include/asm/setup.h | 6 ++ arch/x86/kernel/head64.c | 2 ++ arch/x86/kernel/head_32.S| 4 arch/x86/kernel/setup.c | 34 ++ 4 files changed, 42 insertions(+), 4 deletions(-) diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h index 4f71d48..6f885b7 100644 --- a/arch/x86/include/asm/setup.h +++ b/arch/x86/include/asm/setup.h @@ -42,6 +42,12 @@ extern void visws_early_detect(void); static inline void visws_early_detect(void) { } #endif +#ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE +void x86_acpi_override_find(void); +#else +static inline void x86_acpi_override_find(void) { } +#endif + extern unsigned long saved_video_mode; extern void reserve_standard_io_resources(void); diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 55b6761..229b281 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -175,6 +175,8 @@ void __init x86_64_start_kernel(char * real_mode_data) if (console_loglevel == 10) early_printk(Kernel alive\n); + x86_acpi_override_find(); + clear_page(init_level4_pgt); /* set init_level4_pgt kernel high mapping*/ init_level4_pgt[511] = early_level4_pgt[511]; diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S index 73afd11..ca08f0e 100644 --- a/arch/x86/kernel/head_32.S +++ b/arch/x86/kernel/head_32.S @@ -149,6 +149,10 @@ ENTRY(startup_32) call load_ucode_bsp #endif +#ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE + call x86_acpi_override_find +#endif + /* * Initialize page tables. This creates a PDE and a set of page * tables, which are located immediately beyond __brk_base. The variable diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 142e042..d11b1b7 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -421,6 +421,34 @@ static void __init reserve_initrd(void) } #endif /* CONFIG_BLK_DEV_INITRD */ +#ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE +void __init x86_acpi_override_find(void) +{ + unsigned long ramdisk_image, ramdisk_size; + unsigned char *p = NULL; + +#ifdef CONFIG_X86_32 + struct boot_params *boot_params_p; + + /* +* 32bit is from head_32.S, and it is 32bit flat mode. +* So need to use phys address to access global variables. +*/ + boot_params_p = (struct boot_params *)__pa_nodebug(boot_params); + ramdisk_image = get_ramdisk_image(boot_params_p); + ramdisk_size = get_ramdisk_size(boot_params_p); + p = (unsigned char *)ramdisk_image; + acpi_initrd_override_find(p, ramdisk_size, true); +#else + ramdisk_image = get_ramdisk_image(boot_params); + ramdisk_size = get_ramdisk_size(boot_params); + if (ramdisk_image) + p = __va(ramdisk_image); + acpi_initrd_override_find(p, ramdisk_size, false); +#endif +} +#endif + static void __init parse_setup_data(void) { struct setup_data *data; @@ -1117,12 +1145,10 @@ void __init setup_arch(char **cmdline_p) /* Allocate bigger log buffer */ setup_log_buf(1); - reserve_initrd(); - - acpi_initrd_override_find((void *)initrd_start, - initrd_end - initrd_start, false); acpi_initrd_override_copy(); + reserve_initrd(); + reserve_crashkernel(); vsmp_init(); -- 1.8.1.4 -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[Part1 PATCH v5 09/22] x86, ACPI: Find acpi tables in initrd early from head_32.S/head64.c
From: Yinghai Lu head64.c could use #PF handler setup page table to access initrd before init mem mapping and initrd relocating. head_32.S could use 32bit flat mode to access initrd before init mem mapping initrd relocating. This patch introduces x86_acpi_override_find(), which is called from head_32.S/head64.c, to replace acpi_initrd_override_find(). So that we can makes 32bit and 64 bit more consistent. -v2: use inline function in header file instead according to tj. also still need to keep #idef head_32.S to avoid compiling error. -v3: need to move down reserve_initrd() after acpi_initrd_override_copy(), to make sure we are using right address. Signed-off-by: Yinghai Lu Cc: Pekka Enberg Cc: Jacob Shin Cc: Rafael J. Wysocki Cc: linux-a...@vger.kernel.org Tested-by: Thomas Renninger Reviewed-by: Tang Chen Tested-by: Tang Chen --- arch/x86/include/asm/setup.h |6 ++ arch/x86/kernel/head64.c |2 ++ arch/x86/kernel/head_32.S|4 arch/x86/kernel/setup.c | 34 ++ 4 files changed, 42 insertions(+), 4 deletions(-) diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h index 4f71d48..6f885b7 100644 --- a/arch/x86/include/asm/setup.h +++ b/arch/x86/include/asm/setup.h @@ -42,6 +42,12 @@ extern void visws_early_detect(void); static inline void visws_early_detect(void) { } #endif +#ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE +void x86_acpi_override_find(void); +#else +static inline void x86_acpi_override_find(void) { } +#endif + extern unsigned long saved_video_mode; extern void reserve_standard_io_resources(void); diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 55b6761..229b281 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -175,6 +175,8 @@ void __init x86_64_start_kernel(char * real_mode_data) if (console_loglevel == 10) early_printk("Kernel alive\n"); + x86_acpi_override_find(); + clear_page(init_level4_pgt); /* set init_level4_pgt kernel high mapping*/ init_level4_pgt[511] = early_level4_pgt[511]; diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S index 73afd11..ca08f0e 100644 --- a/arch/x86/kernel/head_32.S +++ b/arch/x86/kernel/head_32.S @@ -149,6 +149,10 @@ ENTRY(startup_32) call load_ucode_bsp #endif +#ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE + call x86_acpi_override_find +#endif + /* * Initialize page tables. This creates a PDE and a set of page * tables, which are located immediately beyond __brk_base. The variable diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 142e042..d11b1b7 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -421,6 +421,34 @@ static void __init reserve_initrd(void) } #endif /* CONFIG_BLK_DEV_INITRD */ +#ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE +void __init x86_acpi_override_find(void) +{ + unsigned long ramdisk_image, ramdisk_size; + unsigned char *p = NULL; + +#ifdef CONFIG_X86_32 + struct boot_params *boot_params_p; + + /* +* 32bit is from head_32.S, and it is 32bit flat mode. +* So need to use phys address to access global variables. +*/ + boot_params_p = (struct boot_params *)__pa_nodebug(_params); + ramdisk_image = get_ramdisk_image(boot_params_p); + ramdisk_size = get_ramdisk_size(boot_params_p); + p = (unsigned char *)ramdisk_image; + acpi_initrd_override_find(p, ramdisk_size, true); +#else + ramdisk_image = get_ramdisk_image(_params); + ramdisk_size = get_ramdisk_size(_params); + if (ramdisk_image) + p = __va(ramdisk_image); + acpi_initrd_override_find(p, ramdisk_size, false); +#endif +} +#endif + static void __init parse_setup_data(void) { struct setup_data *data; @@ -1117,12 +1145,10 @@ void __init setup_arch(char **cmdline_p) /* Allocate bigger log buffer */ setup_log_buf(1); - reserve_initrd(); - - acpi_initrd_override_find((void *)initrd_start, - initrd_end - initrd_start, false); acpi_initrd_override_copy(); + reserve_initrd(); + reserve_crashkernel(); vsmp_init(); -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[Part1 PATCH v5 09/22] x86, ACPI: Find acpi tables in initrd early from head_32.S/head64.c
From: Yinghai Lu ying...@kernel.org head64.c could use #PF handler setup page table to access initrd before init mem mapping and initrd relocating. head_32.S could use 32bit flat mode to access initrd before init mem mapping initrd relocating. This patch introduces x86_acpi_override_find(), which is called from head_32.S/head64.c, to replace acpi_initrd_override_find(). So that we can makes 32bit and 64 bit more consistent. -v2: use inline function in header file instead according to tj. also still need to keep #idef head_32.S to avoid compiling error. -v3: need to move down reserve_initrd() after acpi_initrd_override_copy(), to make sure we are using right address. Signed-off-by: Yinghai Lu ying...@kernel.org Cc: Pekka Enberg penb...@kernel.org Cc: Jacob Shin jacob.s...@amd.com Cc: Rafael J. Wysocki r...@sisk.pl Cc: linux-a...@vger.kernel.org Tested-by: Thomas Renninger tr...@suse.de Reviewed-by: Tang Chen tangc...@cn.fujitsu.com Tested-by: Tang Chen tangc...@cn.fujitsu.com --- arch/x86/include/asm/setup.h |6 ++ arch/x86/kernel/head64.c |2 ++ arch/x86/kernel/head_32.S|4 arch/x86/kernel/setup.c | 34 ++ 4 files changed, 42 insertions(+), 4 deletions(-) diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h index 4f71d48..6f885b7 100644 --- a/arch/x86/include/asm/setup.h +++ b/arch/x86/include/asm/setup.h @@ -42,6 +42,12 @@ extern void visws_early_detect(void); static inline void visws_early_detect(void) { } #endif +#ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE +void x86_acpi_override_find(void); +#else +static inline void x86_acpi_override_find(void) { } +#endif + extern unsigned long saved_video_mode; extern void reserve_standard_io_resources(void); diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 55b6761..229b281 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -175,6 +175,8 @@ void __init x86_64_start_kernel(char * real_mode_data) if (console_loglevel == 10) early_printk(Kernel alive\n); + x86_acpi_override_find(); + clear_page(init_level4_pgt); /* set init_level4_pgt kernel high mapping*/ init_level4_pgt[511] = early_level4_pgt[511]; diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S index 73afd11..ca08f0e 100644 --- a/arch/x86/kernel/head_32.S +++ b/arch/x86/kernel/head_32.S @@ -149,6 +149,10 @@ ENTRY(startup_32) call load_ucode_bsp #endif +#ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE + call x86_acpi_override_find +#endif + /* * Initialize page tables. This creates a PDE and a set of page * tables, which are located immediately beyond __brk_base. The variable diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 142e042..d11b1b7 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -421,6 +421,34 @@ static void __init reserve_initrd(void) } #endif /* CONFIG_BLK_DEV_INITRD */ +#ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE +void __init x86_acpi_override_find(void) +{ + unsigned long ramdisk_image, ramdisk_size; + unsigned char *p = NULL; + +#ifdef CONFIG_X86_32 + struct boot_params *boot_params_p; + + /* +* 32bit is from head_32.S, and it is 32bit flat mode. +* So need to use phys address to access global variables. +*/ + boot_params_p = (struct boot_params *)__pa_nodebug(boot_params); + ramdisk_image = get_ramdisk_image(boot_params_p); + ramdisk_size = get_ramdisk_size(boot_params_p); + p = (unsigned char *)ramdisk_image; + acpi_initrd_override_find(p, ramdisk_size, true); +#else + ramdisk_image = get_ramdisk_image(boot_params); + ramdisk_size = get_ramdisk_size(boot_params); + if (ramdisk_image) + p = __va(ramdisk_image); + acpi_initrd_override_find(p, ramdisk_size, false); +#endif +} +#endif + static void __init parse_setup_data(void) { struct setup_data *data; @@ -1117,12 +1145,10 @@ void __init setup_arch(char **cmdline_p) /* Allocate bigger log buffer */ setup_log_buf(1); - reserve_initrd(); - - acpi_initrd_override_find((void *)initrd_start, - initrd_end - initrd_start, false); acpi_initrd_override_copy(); + reserve_initrd(); + reserve_crashkernel(); vsmp_init(); -- 1.7.1 -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/