From: Pavel Tatashin <pasha.tatashin@soleen.com> To: pasha.tatashin@soleen.com, jmorris@namei.org, sashal@kernel.org, ebiederm@xmission.com, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, corbet@lwn.net, catalin.marinas@arm.com, will@kernel.org, linux-arm-kernel@lists.infradead.org, maz@kernel.org, james.morse@arm.com, vladimir.murzin@arm.com, matthias.bgg@gmail.com, bhsharma@redhat.com, linux-mm@kvack.org, mark.rutland@arm.com, steve.capper@arm.com, rfontana@redhat.com, tglx@linutronix.de, selindag@gmail.com Subject: [PATCH v9 09/18] arm64: kexec: call kexec_image_info only once Date: Wed, 25 Mar 2020 23:24:11 -0400 [thread overview] Message-ID: <20200326032420.27220-10-pasha.tatashin@soleen.com> (raw) In-Reply-To: <20200326032420.27220-1-pasha.tatashin@soleen.com> Currently, kexec_image_info() is called during load time, and right before kernel is being kexec'ed. There is no need to do both. So, call it only once when segments are loaded and the physical location of page with copy of arm64_relocate_new_kernel is known. Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com> --- arch/arm64/kernel/machine_kexec.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c index ec71a153cc2d..cee3be586384 100644 --- a/arch/arm64/kernel/machine_kexec.c +++ b/arch/arm64/kernel/machine_kexec.c @@ -66,6 +66,7 @@ int machine_kexec_post_load(struct kimage *kimage) memcpy(reloc_code, arm64_relocate_new_kernel, arm64_relocate_new_kernel_size); kimage->arch.kern_reloc = __pa(reloc_code); + kexec_image_info(kimage); return 0; } @@ -79,8 +80,6 @@ int machine_kexec_post_load(struct kimage *kimage) */ int machine_kexec_prepare(struct kimage *kimage) { - kexec_image_info(kimage); - if (kimage->type != KEXEC_TYPE_CRASH && cpus_are_stuck_in_kernel()) { pr_err("Can't kexec: CPUs are stuck in the kernel.\n"); return -EBUSY; @@ -166,8 +165,6 @@ void machine_kexec(struct kimage *kimage) WARN(in_kexec_crash && (stuck_cpus || smp_crash_stop_failed()), "Some CPUs may be stale, kdump will be unreliable.\n"); - kexec_image_info(kimage); - /* Flush the reboot_code_buffer in preparation for its execution. */ __flush_dcache_area(reboot_code_buffer, arm64_relocate_new_kernel_size); -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Pavel Tatashin <pasha.tatashin@soleen.com> To: pasha.tatashin@soleen.com, jmorris@namei.org, sashal@kernel.org, ebiederm@xmission.com, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, corbet@lwn.net, catalin.marinas@arm.com, will@kernel.org, linux-arm-kernel@lists.infradead.org, maz@kernel.org, james.morse@arm.com, vladimir.murzin@arm.com, matthias.bgg@gmail.com, bhsharma@redhat.com, linux-mm@kvack.org, mark.rutland@arm.com, steve.capper@arm.com, rfontana@redhat.com, tglx@linutronix.de, selindag@gmail.com Subject: [PATCH v9 09/18] arm64: kexec: call kexec_image_info only once Date: Wed, 25 Mar 2020 23:24:11 -0400 [thread overview] Message-ID: <20200326032420.27220-10-pasha.tatashin@soleen.com> (raw) In-Reply-To: <20200326032420.27220-1-pasha.tatashin@soleen.com> Currently, kexec_image_info() is called during load time, and right before kernel is being kexec'ed. There is no need to do both. So, call it only once when segments are loaded and the physical location of page with copy of arm64_relocate_new_kernel is known. Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com> --- arch/arm64/kernel/machine_kexec.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c index ec71a153cc2d..cee3be586384 100644 --- a/arch/arm64/kernel/machine_kexec.c +++ b/arch/arm64/kernel/machine_kexec.c @@ -66,6 +66,7 @@ int machine_kexec_post_load(struct kimage *kimage) memcpy(reloc_code, arm64_relocate_new_kernel, arm64_relocate_new_kernel_size); kimage->arch.kern_reloc = __pa(reloc_code); + kexec_image_info(kimage); return 0; } @@ -79,8 +80,6 @@ int machine_kexec_post_load(struct kimage *kimage) */ int machine_kexec_prepare(struct kimage *kimage) { - kexec_image_info(kimage); - if (kimage->type != KEXEC_TYPE_CRASH && cpus_are_stuck_in_kernel()) { pr_err("Can't kexec: CPUs are stuck in the kernel.\n"); return -EBUSY; @@ -166,8 +165,6 @@ void machine_kexec(struct kimage *kimage) WARN(in_kexec_crash && (stuck_cpus || smp_crash_stop_failed()), "Some CPUs may be stale, kdump will be unreliable.\n"); - kexec_image_info(kimage); - /* Flush the reboot_code_buffer in preparation for its execution. */ __flush_dcache_area(reboot_code_buffer, arm64_relocate_new_kernel_size); -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-03-26 3:25 UTC|newest] Thread overview: 126+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-03-26 3:24 [PATCH v9 00/18] arm64: MMU enabled kexec relocation Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin 2020-03-26 3:24 ` [PATCH v9 01/18] arm64: kexec: make dtb_mem always enabled Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin 2020-04-29 17:00 ` James Morse 2020-04-29 17:00 ` James Morse 2020-04-29 17:00 ` James Morse 2021-01-23 0:17 ` Pavel Tatashin 2021-01-23 0:17 ` Pavel Tatashin 2021-01-23 0:17 ` Pavel Tatashin 2021-01-23 0:17 ` Pavel Tatashin 2020-03-26 3:24 ` [PATCH v9 02/18] arm64: hibernate: move page handling function to new trans_pgd.c Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin 2020-04-29 17:00 ` James Morse 2020-04-29 17:00 ` James Morse 2020-04-29 17:00 ` James Morse 2021-01-23 0:18 ` Pavel Tatashin 2021-01-23 0:18 ` Pavel Tatashin 2021-01-23 0:18 ` Pavel Tatashin 2021-01-23 0:18 ` Pavel Tatashin 2020-03-26 3:24 ` [PATCH v9 03/18] arm64: trans_pgd: make trans_pgd_map_page generic Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin 2020-04-29 17:01 ` James Morse 2020-04-29 17:01 ` James Morse 2020-04-29 17:01 ` James Morse 2021-01-22 21:52 ` Pavel Tatashin 2021-01-22 21:52 ` Pavel Tatashin 2021-01-22 21:52 ` Pavel Tatashin 2021-01-22 21:52 ` Pavel Tatashin 2020-03-26 3:24 ` [PATCH v9 04/18] arm64: trans_pgd: pass allocator trans_pgd_create_copy Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin 2020-04-29 17:01 ` James Morse 2020-04-29 17:01 ` James Morse 2020-04-29 17:01 ` James Morse 2021-01-23 0:20 ` Pavel Tatashin 2021-01-23 0:20 ` Pavel Tatashin 2021-01-23 0:20 ` Pavel Tatashin 2021-01-23 0:20 ` Pavel Tatashin 2020-03-26 3:24 ` [PATCH v9 05/18] arm64: trans_pgd: pass NULL instead of init_mm to *_populate functions Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin 2020-04-29 17:01 ` James Morse 2020-04-29 17:01 ` James Morse 2020-04-29 17:01 ` James Morse 2021-01-23 0:22 ` Pavel Tatashin 2021-01-23 0:22 ` Pavel Tatashin 2021-01-23 0:22 ` Pavel Tatashin 2021-01-23 0:22 ` Pavel Tatashin 2020-03-26 3:24 ` [PATCH v9 06/18] arm64: mm: Always update TCR_EL1 from __cpu_set_tcr_t0sz() Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin 2020-03-26 3:24 ` [PATCH v9 07/18] arm64: trans_pgd: hibernate: idmap the single page that holds the copy page routines Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin 2020-04-29 17:01 ` James Morse 2020-04-29 17:01 ` James Morse 2020-04-29 17:01 ` James Morse 2021-01-23 0:35 ` Pavel Tatashin 2021-01-23 0:35 ` Pavel Tatashin 2021-01-23 0:35 ` Pavel Tatashin 2021-01-23 0:35 ` Pavel Tatashin 2020-03-26 3:24 ` [PATCH v9 08/18] arm64: kexec: move relocation function setup Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin 2020-04-29 17:01 ` James Morse 2020-04-29 17:01 ` James Morse 2020-04-29 17:01 ` James Morse 2021-01-23 1:01 ` Pavel Tatashin 2021-01-23 1:01 ` Pavel Tatashin 2021-01-23 1:01 ` Pavel Tatashin 2021-01-23 1:01 ` Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin [this message] 2020-03-26 3:24 ` [PATCH v9 09/18] arm64: kexec: call kexec_image_info only once Pavel Tatashin 2020-04-29 17:01 ` James Morse 2020-04-29 17:01 ` James Morse 2020-04-29 17:01 ` James Morse 2020-03-26 3:24 ` [PATCH v9 10/18] arm64: kexec: cpu_soft_restart change argument types Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin 2020-04-29 17:01 ` James Morse 2020-04-29 17:01 ` James Morse 2020-04-29 17:01 ` James Morse 2021-01-23 1:14 ` Pavel Tatashin 2021-01-23 1:14 ` Pavel Tatashin 2021-01-23 1:14 ` Pavel Tatashin 2021-01-23 1:14 ` Pavel Tatashin 2020-03-26 3:24 ` [PATCH v9 11/18] arm64: kexec: arm64_relocate_new_kernel clean-ups Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin 2020-05-07 16:22 ` James Morse 2020-05-07 16:22 ` James Morse 2020-05-07 16:22 ` James Morse 2020-03-26 3:24 ` [PATCH v9 12/18] arm64: kexec: arm64_relocate_new_kernel don't use x0 as temp Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin 2020-05-07 16:22 ` James Morse 2020-05-07 16:22 ` James Morse 2020-05-07 16:22 ` James Morse 2020-03-26 3:24 ` [PATCH v9 13/18] arm64: kexec: add expandable argument to relocation function Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin 2020-05-07 16:22 ` James Morse 2020-05-07 16:22 ` James Morse 2020-05-07 16:22 ` James Morse 2021-01-23 2:49 ` Pavel Tatashin 2021-01-23 2:49 ` Pavel Tatashin 2021-01-23 2:49 ` Pavel Tatashin 2021-01-23 2:49 ` Pavel Tatashin 2020-03-26 3:24 ` [PATCH v9 14/18] arm64: kexec: offset for " Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin 2020-05-07 16:22 ` James Morse 2020-05-07 16:22 ` James Morse 2020-05-07 16:22 ` James Morse 2020-03-26 3:24 ` [PATCH v9 15/18] arm64: kexec: kexec EL2 vectors Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin 2020-04-29 17:35 ` Marc Zyngier 2020-04-29 17:35 ` Marc Zyngier 2020-04-29 17:35 ` Marc Zyngier 2021-01-25 19:07 ` Pavel Tatashin 2021-01-25 19:07 ` Pavel Tatashin 2021-01-25 19:07 ` Pavel Tatashin 2021-01-25 19:07 ` Pavel Tatashin 2020-05-07 16:21 ` James Morse 2020-05-07 16:21 ` James Morse 2020-05-07 16:21 ` James Morse 2020-03-26 3:24 ` [PATCH v9 16/18] arm64: kexec: configure trans_pgd page table for kexec Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin 2020-05-07 16:22 ` James Morse 2020-05-07 16:22 ` James Morse 2020-05-07 16:22 ` James Morse 2020-03-26 3:24 ` [PATCH v9 17/18] arm64: kexec: enable MMU during kexec relocation Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin 2020-03-26 3:24 ` [PATCH v9 18/18] arm64: kexec: remove head from relocation argument Pavel Tatashin 2020-03-26 3:24 ` Pavel Tatashin
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