From: takahiro.akashi@linaro.org (AKASHI Takahiro) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v22 5/8] arm64: kdump: add VMCOREINFO's for user-space coredump tools Date: Tue, 12 Jul 2016 14:05:11 +0900 [thread overview] Message-ID: <20160712050514.22307-6-takahiro.akashi@linaro.org> (raw) In-Reply-To: <20160712050514.22307-1-takahiro.akashi@linaro.org> For the current crash utility, we need to know, at least, - kimage_voffset - PHYS_OFFSET to handle the contents of core dump file (/proc/vmcore) correctly due to the introduction of KASLR (CONFIG_RANDOMIZE_BASE) in v4.6. This patch puts them as VMCOREINFO's into the file. - VA_BITS is also added for makedumpfile command. More VMCOREINFO's may be added later. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> --- 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 8ac9dba8..38b4411 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_context.h> #include "cpu-reset.h" @@ -260,3 +261,13 @@ void machine_crash_shutdown(struct pt_regs *regs) pr_info("Starting crashdump kernel...\n"); } + +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); +} -- 2.9.0
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>, robh+dt@kernel.org, james.morse@arm.com, bauerman@linux.vnet.ibm.com, dyoung@redhat.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH v22 5/8] arm64: kdump: add VMCOREINFO's for user-space coredump tools Date: Tue, 12 Jul 2016 14:05:11 +0900 [thread overview] Message-ID: <20160712050514.22307-6-takahiro.akashi@linaro.org> (raw) In-Reply-To: <20160712050514.22307-1-takahiro.akashi@linaro.org> For the current crash utility, we need to know, at least, - kimage_voffset - PHYS_OFFSET to handle the contents of core dump file (/proc/vmcore) correctly due to the introduction of KASLR (CONFIG_RANDOMIZE_BASE) in v4.6. This patch puts them as VMCOREINFO's into the file. - VA_BITS is also added for makedumpfile command. More VMCOREINFO's may be added later. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> --- 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 8ac9dba8..38b4411 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_context.h> #include "cpu-reset.h" @@ -260,3 +261,13 @@ void machine_crash_shutdown(struct pt_regs *regs) pr_info("Starting crashdump kernel...\n"); } + +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); +} -- 2.9.0 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec
next prev parent reply other threads:[~2016-07-12 5:05 UTC|newest] Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-07-12 5:05 [PATCH v22 0/8] arm64: add kdump support AKASHI Takahiro 2016-07-12 5:05 ` AKASHI Takahiro 2016-07-12 5:05 ` [PATCH v22 1/8] arm64: kdump: reserve memory for crash dump kernel AKASHI Takahiro 2016-07-12 5:05 ` AKASHI Takahiro 2016-07-13 9:12 ` Suzuki K Poulose 2016-07-13 9:12 ` Suzuki K Poulose 2016-07-13 15:42 ` AKASHI Takahiro 2016-07-13 15:42 ` AKASHI Takahiro 2016-07-19 9:39 ` Dennis Chen 2016-07-19 9:39 ` Dennis Chen 2016-07-19 10:28 ` AKASHI Takahiro 2016-07-19 10:28 ` AKASHI Takahiro 2016-07-19 10:41 ` Dennis Chen 2016-07-19 10:41 ` Dennis Chen 2016-07-19 12:48 ` Mark Salter 2016-07-19 12:48 ` Mark Salter 2016-07-19 13:27 ` Mark Rutland 2016-07-19 13:27 ` Mark Rutland 2016-07-20 2:17 ` AKASHI Takahiro 2016-07-20 2:17 ` AKASHI Takahiro 2016-07-20 3:48 ` Dennis Chen 2016-07-20 3:48 ` Dennis Chen 2016-07-19 23:34 ` AKASHI Takahiro 2016-07-19 23:34 ` AKASHI Takahiro 2016-07-12 5:05 ` [PATCH v22 2/8] arm64: limit memory regions based on DT property, usable-memory-range AKASHI Takahiro 2016-07-12 5:05 ` AKASHI Takahiro 2016-07-18 18:04 ` James Morse 2016-07-18 18:04 ` James Morse 2016-07-19 8:35 ` AKASHI Takahiro 2016-07-19 8:35 ` AKASHI Takahiro 2016-07-19 10:06 ` Dennis Chen 2016-07-19 10:06 ` Dennis Chen 2016-07-19 11:01 ` AKASHI Takahiro 2016-07-19 11:01 ` AKASHI Takahiro 2016-07-20 3:39 ` Dennis Chen 2016-07-20 3:39 ` Dennis Chen 2016-07-20 4:22 ` AKASHI Takahiro 2016-07-20 4:22 ` AKASHI Takahiro 2016-07-20 4:36 ` Dennis Chen 2016-07-20 4:36 ` Dennis Chen 2016-07-21 0:57 ` AKASHI Takahiro 2016-07-21 0:57 ` AKASHI Takahiro 2016-07-22 13:55 ` James Morse 2016-07-22 13:55 ` James Morse 2016-07-25 5:27 ` AKASHI Takahiro 2016-07-25 5:27 ` AKASHI Takahiro 2016-08-04 6:21 ` AKASHI Takahiro 2016-08-04 6:21 ` AKASHI Takahiro 2016-08-09 16:22 ` James Morse 2016-08-09 16:22 ` James Morse 2016-07-12 5:05 ` [PATCH v22 3/8] arm64: kdump: implement machine_crash_shutdown() AKASHI Takahiro 2016-07-12 5:05 ` AKASHI Takahiro 2016-07-13 9:32 ` Suzuki K Poulose 2016-07-13 9:32 ` Suzuki K Poulose 2016-07-13 16:00 ` AKASHI Takahiro 2016-07-13 16:00 ` AKASHI Takahiro 2016-07-12 5:05 ` [PATCH v22 4/8] arm64: kdump: add kdump support AKASHI Takahiro 2016-07-12 5:05 ` AKASHI Takahiro 2016-07-12 5:05 ` AKASHI Takahiro [this message] 2016-07-12 5:05 ` [PATCH v22 5/8] arm64: kdump: add VMCOREINFO's for user-space coredump tools AKASHI Takahiro 2016-07-12 5:05 ` [PATCH v22 6/8] arm64: kdump: enable kdump in the arm64 defconfig AKASHI Takahiro 2016-07-12 5:05 ` AKASHI Takahiro 2016-07-12 5:05 ` [PATCH v22 7/8] arm64: kdump: update a kernel doc AKASHI Takahiro 2016-07-12 5:05 ` AKASHI Takahiro 2016-07-12 5:05 ` [PATCH v22 8/8] Documentation: dt: chosen properties for arm64 kdump AKASHI Takahiro 2016-07-12 5:05 ` AKASHI Takahiro 2016-07-12 10:07 ` Mark Rutland 2016-07-12 10:07 ` Mark Rutland 2016-07-13 15:14 ` AKASHI Takahiro 2016-07-13 15:14 ` AKASHI Takahiro
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