From mboxrd@z Thu Jan 1 00:00:00 1970 From: geoff@infradead.org (Geoff Levand) Date: Mon, 19 Oct 2015 23:38:53 +0000 Subject: [PATCH 00/16] arm64 kexec kernel patches v10 Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi All, This series adds the core support for kexec re-boot and kdump on ARM64. This v10 of the series combines Takahiro's kdump patches with my kexec patches. To load a second stage kernel and execute a kexec re-boot or to work with kdump on ARM64 systems a series of patches to kexec-tools [2], which have not yet been merged upstream, are needed. I have tested kexec with the ARM Foundation model, and Takahiro has reported that kdump is working on the 96boards HiKey developer board. Kexec on EFI systems works correctly. More ACPI + kexec testing is needed. Patch 1 here moves the macros from proc-macros.S to asm/assembler.h so that the dcache_line_size macro it defines can be uesd by kexec's relocate kernel routine. Patches 2 & 3 rework the ARM64 hcall mechanism to give the CPU reset routines the ability to switch exception levels from EL1 to EL2 for kernels that were entered in EL2. Patch 4 allows KVM to handle a CPU reset. Patches 5-7 add back the ARM64 CPU reset support that was recently removed from the kernel. Patches 8-10 add the actual kexec support. Patches 11-16 add kdump support. Please consider all patches for inclusion. [1] https://git.kernel.org/cgit/linux/kernel/git/geoff/linux-kexec.git [2] https://git.kernel.org/cgit/linux/kernel/git/geoff/kexec-tools.git -Geoff The following changes since commit 7379047d5585187d1288486d4627873170d0005a: Linux 4.3-rc6 (2015-10-18 16:08:42 -0700) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/geoff/linux-kexec.git kexec-v10 for you to fetch changes up to 4cf0c03d6cd1cb4826bb5df679fbcdaf80be0b1c: arm64: kdump: relax BUG_ON() if more than one cpus are still active (2015-10-19 15:51:52 -0700) ---------------------------------------------------------------- AKASHI Takahiro (7): arm64: kvm: allows kvm cpu hotplug arm64: kdump: reserve memory for crash dump kernel arm64: kdump: implement machine_crash_shutdown() arm64: kdump: add kdump support arm64: kdump: update a kernel doc arm64: kdump: enable kdump in the arm64 defconfig arm64: kdump: relax BUG_ON() if more than one cpus are still active Geoff Levand (9): arm64: Fold proc-macros.S into assembler.h arm64: Convert hcalls to use HVC immediate value arm64: Add new hcall HVC_CALL_FUNC arm64: Add back cpu_reset routines arm64: Add EL2 switch to cpu_reset Revert "arm64: remove dead code" arm64/kexec: Add core kexec support arm64/kexec: Add pr_devel output arm64/kexec: Enable kexec in the arm64 defconfig Documentation/kdump/kdump.txt | 29 ++++- arch/arm/include/asm/kvm_host.h | 10 +- arch/arm/include/asm/kvm_mmu.h | 1 + arch/arm/kvm/arm.c | 58 +++------ arch/arm/kvm/mmu.c | 5 + arch/arm64/Kconfig | 22 ++++ arch/arm64/configs/defconfig | 2 + arch/arm64/include/asm/assembler.h | 48 +++++++- arch/arm64/include/asm/kexec.h | 80 ++++++++++++ arch/arm64/include/asm/kvm_host.h | 16 ++- arch/arm64/include/asm/kvm_mmu.h | 1 + arch/arm64/include/asm/mmu.h | 1 + arch/arm64/include/asm/virt.h | 49 ++++++++ arch/arm64/kernel/Makefile | 3 + arch/arm64/kernel/cpu-reset.S | 76 ++++++++++++ arch/arm64/kernel/cpu-reset.h | 20 +++ arch/arm64/kernel/crash_dump.c | 71 +++++++++++ arch/arm64/kernel/head.S | 1 - arch/arm64/kernel/hyp-stub.S | 43 +++++-- arch/arm64/kernel/machine_kexec.c | 237 ++++++++++++++++++++++++++++++++++++ arch/arm64/kernel/relocate_kernel.S | 163 +++++++++++++++++++++++++ arch/arm64/kernel/setup.c | 7 +- arch/arm64/kernel/smp.c | 16 ++- arch/arm64/kvm/hyp-init.S | 34 +++++- arch/arm64/kvm/hyp.S | 44 +++++-- arch/arm64/mm/cache.S | 2 - arch/arm64/mm/init.c | 83 +++++++++++++ arch/arm64/mm/mmu.c | 11 ++ arch/arm64/mm/proc-macros.S | 64 ---------- arch/arm64/mm/proc.S | 3 - include/uapi/linux/kexec.h | 1 + 31 files changed, 1063 insertions(+), 138 deletions(-) create mode 100644 arch/arm64/include/asm/kexec.h create mode 100644 arch/arm64/kernel/cpu-reset.S create mode 100644 arch/arm64/kernel/cpu-reset.h create mode 100644 arch/arm64/kernel/crash_dump.c create mode 100644 arch/arm64/kernel/machine_kexec.c create mode 100644 arch/arm64/kernel/relocate_kernel.S delete mode 100644 arch/arm64/mm/proc-macros.S -- 2.5.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Message-Id: From: Geoff Levand Subject: [PATCH 00/16] arm64 kexec kernel patches v10 Date: Mon, 19 Oct 2015 23:38:53 +0000 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: Catalin Marinas , Will Deacon Cc: Mark Rutland , AKASHI@infradead.org, marc.zyngier@arm.com, kexec@lists.infradead.org, Takahiro , linux-arm-kernel@lists.infradead.org, christoffer.dall@linaro.org Hi All, This series adds the core support for kexec re-boot and kdump on ARM64. This v10 of the series combines Takahiro's kdump patches with my kexec patches. To load a second stage kernel and execute a kexec re-boot or to work with kdump on ARM64 systems a series of patches to kexec-tools [2], which have not yet been merged upstream, are needed. I have tested kexec with the ARM Foundation model, and Takahiro has reported that kdump is working on the 96boards HiKey developer board. Kexec on EFI systems works correctly. More ACPI + kexec testing is needed. Patch 1 here moves the macros from proc-macros.S to asm/assembler.h so that the dcache_line_size macro it defines can be uesd by kexec's relocate kernel routine. Patches 2 & 3 rework the ARM64 hcall mechanism to give the CPU reset routines the ability to switch exception levels from EL1 to EL2 for kernels that were entered in EL2. Patch 4 allows KVM to handle a CPU reset. Patches 5-7 add back the ARM64 CPU reset support that was recently removed from the kernel. Patches 8-10 add the actual kexec support. Patches 11-16 add kdump support. Please consider all patches for inclusion. [1] https://git.kernel.org/cgit/linux/kernel/git/geoff/linux-kexec.git [2] https://git.kernel.org/cgit/linux/kernel/git/geoff/kexec-tools.git -Geoff The following changes since commit 7379047d5585187d1288486d4627873170d0005a: Linux 4.3-rc6 (2015-10-18 16:08:42 -0700) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/geoff/linux-kexec.git kexec-v10 for you to fetch changes up to 4cf0c03d6cd1cb4826bb5df679fbcdaf80be0b1c: arm64: kdump: relax BUG_ON() if more than one cpus are still active (2015-10-19 15:51:52 -0700) ---------------------------------------------------------------- AKASHI Takahiro (7): arm64: kvm: allows kvm cpu hotplug arm64: kdump: reserve memory for crash dump kernel arm64: kdump: implement machine_crash_shutdown() arm64: kdump: add kdump support arm64: kdump: update a kernel doc arm64: kdump: enable kdump in the arm64 defconfig arm64: kdump: relax BUG_ON() if more than one cpus are still active Geoff Levand (9): arm64: Fold proc-macros.S into assembler.h arm64: Convert hcalls to use HVC immediate value arm64: Add new hcall HVC_CALL_FUNC arm64: Add back cpu_reset routines arm64: Add EL2 switch to cpu_reset Revert "arm64: remove dead code" arm64/kexec: Add core kexec support arm64/kexec: Add pr_devel output arm64/kexec: Enable kexec in the arm64 defconfig Documentation/kdump/kdump.txt | 29 ++++- arch/arm/include/asm/kvm_host.h | 10 +- arch/arm/include/asm/kvm_mmu.h | 1 + arch/arm/kvm/arm.c | 58 +++------ arch/arm/kvm/mmu.c | 5 + arch/arm64/Kconfig | 22 ++++ arch/arm64/configs/defconfig | 2 + arch/arm64/include/asm/assembler.h | 48 +++++++- arch/arm64/include/asm/kexec.h | 80 ++++++++++++ arch/arm64/include/asm/kvm_host.h | 16 ++- arch/arm64/include/asm/kvm_mmu.h | 1 + arch/arm64/include/asm/mmu.h | 1 + arch/arm64/include/asm/virt.h | 49 ++++++++ arch/arm64/kernel/Makefile | 3 + arch/arm64/kernel/cpu-reset.S | 76 ++++++++++++ arch/arm64/kernel/cpu-reset.h | 20 +++ arch/arm64/kernel/crash_dump.c | 71 +++++++++++ arch/arm64/kernel/head.S | 1 - arch/arm64/kernel/hyp-stub.S | 43 +++++-- arch/arm64/kernel/machine_kexec.c | 237 ++++++++++++++++++++++++++++++++++++ arch/arm64/kernel/relocate_kernel.S | 163 +++++++++++++++++++++++++ arch/arm64/kernel/setup.c | 7 +- arch/arm64/kernel/smp.c | 16 ++- arch/arm64/kvm/hyp-init.S | 34 +++++- arch/arm64/kvm/hyp.S | 44 +++++-- arch/arm64/mm/cache.S | 2 - arch/arm64/mm/init.c | 83 +++++++++++++ arch/arm64/mm/mmu.c | 11 ++ arch/arm64/mm/proc-macros.S | 64 ---------- arch/arm64/mm/proc.S | 3 - include/uapi/linux/kexec.h | 1 + 31 files changed, 1063 insertions(+), 138 deletions(-) create mode 100644 arch/arm64/include/asm/kexec.h create mode 100644 arch/arm64/kernel/cpu-reset.S create mode 100644 arch/arm64/kernel/cpu-reset.h create mode 100644 arch/arm64/kernel/crash_dump.c create mode 100644 arch/arm64/kernel/machine_kexec.c create mode 100644 arch/arm64/kernel/relocate_kernel.S delete mode 100644 arch/arm64/mm/proc-macros.S -- 2.5.0 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec