From: takahiro.akashi@linaro.org (AKASHI Takahiro) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v30 07/11] arm64: kdump: add VMCOREINFO's for user-space tools Date: Tue, 24 Jan 2017 17:50:01 +0900 [thread overview] Message-ID: <20170124085004.3892-6-takahiro.akashi@linaro.org> (raw) In-Reply-To: <20170124084638.3770-1-takahiro.akashi@linaro.org> In addition to common VMCOREINFO's defined in crash_save_vmcoreinfo_init(), we need to know, for crash utility, - kimage_voffset - PHYS_OFFSET to examine the contents of a dump file (/proc/vmcore) correctly due to the introduction of KASLR (CONFIG_RANDOMIZE_BASE) in v4.6. - VA_BITS is also required for makedumpfile command. arch_crash_save_vmcoreinfo() appends them to the dump file. More VMCOREINFO's may be added later. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: James Morse <james.morse@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> --- arch/arm64/kernel/machine_kexec.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c index d56ea8c805a8..84c5761af336 100644 --- a/arch/arm64/kernel/machine_kexec.c +++ b/arch/arm64/kernel/machine_kexec.c @@ -17,6 +17,7 @@ #include <asm/cacheflush.h> #include <asm/cpu_ops.h> +#include <asm/memory.h> #include <asm/mmu.h> #include <asm/mmu_context.h> @@ -275,3 +276,13 @@ void arch_kexec_unprotect_crashkres(void) flush_tlb_all(); } + +void arch_crash_save_vmcoreinfo(void) +{ + VMCOREINFO_NUMBER(VA_BITS); + /* Please note VMCOREINFO_NUMBER() uses "%d", not "%x" */ + vmcoreinfo_append_str("NUMBER(kimage_voffset)=0x%llx\n", + kimage_voffset); + vmcoreinfo_append_str("NUMBER(PHYS_OFFSET)=0x%llx\n", + PHYS_OFFSET); +} -- 2.11.0
WARNING: multiple messages have this Message-ID (diff)
From: AKASHI Takahiro <takahiro.akashi@linaro.org> To: catalin.marinas@arm.com, will.deacon@arm.com Cc: mark.rutland@arm.com, geoff@infradead.org, kexec@lists.infradead.org, AKASHI Takahiro <takahiro.akashi@linaro.org>, james.morse@arm.com, bauerman@linux.vnet.ibm.com, dyoung@redhat.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH v30 07/11] arm64: kdump: add VMCOREINFO's for user-space tools Date: Tue, 24 Jan 2017 17:50:01 +0900 [thread overview] Message-ID: <20170124085004.3892-6-takahiro.akashi@linaro.org> (raw) In-Reply-To: <20170124084638.3770-1-takahiro.akashi@linaro.org> In addition to common VMCOREINFO's defined in crash_save_vmcoreinfo_init(), we need to know, for crash utility, - kimage_voffset - PHYS_OFFSET to examine the contents of a dump file (/proc/vmcore) correctly due to the introduction of KASLR (CONFIG_RANDOMIZE_BASE) in v4.6. - VA_BITS is also required for makedumpfile command. arch_crash_save_vmcoreinfo() appends them to the dump file. More VMCOREINFO's may be added later. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: James Morse <james.morse@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> --- arch/arm64/kernel/machine_kexec.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c index d56ea8c805a8..84c5761af336 100644 --- a/arch/arm64/kernel/machine_kexec.c +++ b/arch/arm64/kernel/machine_kexec.c @@ -17,6 +17,7 @@ #include <asm/cacheflush.h> #include <asm/cpu_ops.h> +#include <asm/memory.h> #include <asm/mmu.h> #include <asm/mmu_context.h> @@ -275,3 +276,13 @@ void arch_kexec_unprotect_crashkres(void) flush_tlb_all(); } + +void arch_crash_save_vmcoreinfo(void) +{ + VMCOREINFO_NUMBER(VA_BITS); + /* Please note VMCOREINFO_NUMBER() uses "%d", not "%x" */ + vmcoreinfo_append_str("NUMBER(kimage_voffset)=0x%llx\n", + kimage_voffset); + vmcoreinfo_append_str("NUMBER(PHYS_OFFSET)=0x%llx\n", + PHYS_OFFSET); +} -- 2.11.0 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec
next prev parent reply other threads:[~2017-01-24 8:50 UTC|newest] Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-01-24 8:46 [PATCH v30 00/11] arm64: add kdump support AKASHI Takahiro 2017-01-24 8:46 ` AKASHI Takahiro 2017-01-24 8:49 ` [PATCH v30 01/11] memblock: add memblock_cap_memory_range() AKASHI Takahiro 2017-01-24 8:49 ` AKASHI Takahiro 2017-01-24 8:49 ` AKASHI Takahiro 2017-01-24 8:49 ` [PATCH v30 02/11] arm64: limit memory regions based on DT property, usable-memory-range AKASHI Takahiro 2017-01-24 8:49 ` AKASHI Takahiro 2017-01-24 8:49 ` [PATCH v30 03/11] arm64: kdump: reserve memory for crash dump kernel AKASHI Takahiro 2017-01-24 8:49 ` AKASHI Takahiro 2017-01-24 8:49 ` [PATCH v30 04/11] arm64: mm: allow for unmapping memory region from kernel mapping AKASHI Takahiro 2017-01-24 8:49 ` AKASHI Takahiro 2017-01-24 11:32 ` Pratyush Anand 2017-01-24 11:32 ` Pratyush Anand 2017-01-25 6:37 ` AKASHI Takahiro 2017-01-25 6:37 ` AKASHI Takahiro 2017-01-25 15:49 ` James Morse 2017-01-25 15:49 ` James Morse 2017-01-26 8:08 ` AKASHI Takahiro 2017-01-26 8:08 ` AKASHI Takahiro 2017-01-24 8:49 ` [PATCH v30 05/11] arm64: kdump: protect crash dump kernel memory AKASHI Takahiro 2017-01-24 8:49 ` AKASHI Takahiro 2017-01-25 17:37 ` James Morse 2017-01-25 17:37 ` James Morse 2017-01-26 11:28 ` AKASHI Takahiro 2017-01-26 11:28 ` AKASHI Takahiro 2017-01-27 11:19 ` James Morse 2017-01-27 11:19 ` James Morse 2017-01-27 17:15 ` AKASHI Takahiro 2017-01-27 17:15 ` AKASHI Takahiro 2017-01-27 18:56 ` Mark Rutland 2017-01-27 18:56 ` Mark Rutland 2017-01-30 8:42 ` AKASHI Takahiro 2017-01-30 8:42 ` AKASHI Takahiro 2017-01-30 8:27 ` AKASHI Takahiro 2017-01-30 8:27 ` AKASHI Takahiro 2017-01-27 13:59 ` James Morse 2017-01-27 13:59 ` James Morse 2017-01-27 15:42 ` AKASHI Takahiro 2017-01-27 15:42 ` AKASHI Takahiro 2017-01-27 19:41 ` Mark Rutland 2017-01-27 19:41 ` Mark Rutland 2017-01-24 8:50 ` [PATCH v30 06/11] arm64: kdump: implement machine_crash_shutdown() AKASHI Takahiro 2017-01-24 8:50 ` AKASHI Takahiro 2017-01-24 8:50 ` AKASHI Takahiro [this message] 2017-01-24 8:50 ` [PATCH v30 07/11] arm64: kdump: add VMCOREINFO's for user-space tools AKASHI Takahiro 2017-01-24 8:50 ` [PATCH v30 08/11] arm64: kdump: provide /proc/vmcore file AKASHI Takahiro 2017-01-24 8:50 ` AKASHI Takahiro 2017-01-24 8:50 ` [PATCH v30 09/11] arm64: kdump: enable kdump in defconfig AKASHI Takahiro 2017-01-24 8:50 ` AKASHI Takahiro 2017-01-24 8:50 ` [PATCH v30 10/11] Documentation: kdump: describe arm64 port AKASHI Takahiro 2017-01-24 8:50 ` AKASHI Takahiro [not found] ` <20170124084638.3770-1-takahiro.akashi-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> 2017-01-24 8:53 ` [PATCH v30 11/11] Documentation: dt: chosen properties for arm64 kdump AKASHI Takahiro 2017-01-24 8:53 ` AKASHI Takahiro 2017-01-24 8:53 ` AKASHI Takahiro
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