Re: [PATCH 3/5] arm64: kdump: do not go into EL2 before starting a crash dump kernel

2015-03-29 Thread AKASHI Takahiro
On 03/27/2015 07:29 AM, Geoff Levand wrote: On Thu, 2015-03-26 at 17:28 +0900, AKASHI Takahiro wrote: @@ -64,7 +65,11 @@ void soft_restart(unsigned long addr) setup_mm_for_reboot(); cpu_soft_restart(virt_to_phys(cpu_reset), - is_hyp_mode_available(), addr);

Re: [PATCH 3/5] arm64: kdump: do not go into EL2 before starting a crash dump kernel

2015-03-29 Thread AKASHI Takahiro
On 03/27/2015 07:29 AM, Geoff Levand wrote: On Thu, 2015-03-26 at 17:28 +0900, AKASHI Takahiro wrote: @@ -64,7 +65,11 @@ void soft_restart(unsigned long addr) setup_mm_for_reboot(); cpu_soft_restart(virt_to_phys(cpu_reset), - is_hyp_mode_available(), addr);

Re: [PATCH 3/5] arm64: kdump: do not go into EL2 before starting a crash dump kernel

2015-03-26 Thread Geoff Levand
On Thu, 2015-03-26 at 17:28 +0900, AKASHI Takahiro wrote: > @@ -64,7 +65,11 @@ void soft_restart(unsigned long addr) > setup_mm_for_reboot(); > > cpu_soft_restart(virt_to_phys(cpu_reset), > - is_hyp_mode_available(), addr); > +#ifdef CONFIG_KEXEC > +

[PATCH 3/5] arm64: kdump: do not go into EL2 before starting a crash dump kernel

2015-03-26 Thread AKASHI Takahiro
Unlike normal kexec case, we don't have a chance to reset EL2 context in a generic way because bad exceptions may directly invoke crash_kexec(). (See die().) Kvm is not useful on crash dump kernel anyway, and so we let it un-initialized across rebooting. Signed-off-by: AKASHI Takahiro ---

[PATCH 3/5] arm64: kdump: do not go into EL2 before starting a crash dump kernel

2015-03-26 Thread AKASHI Takahiro
Unlike normal kexec case, we don't have a chance to reset EL2 context in a generic way because bad exceptions may directly invoke crash_kexec(). (See die().) Kvm is not useful on crash dump kernel anyway, and so we let it un-initialized across rebooting. Signed-off-by: AKASHI Takahiro

Re: [PATCH 3/5] arm64: kdump: do not go into EL2 before starting a crash dump kernel

2015-03-26 Thread Geoff Levand
On Thu, 2015-03-26 at 17:28 +0900, AKASHI Takahiro wrote: @@ -64,7 +65,11 @@ void soft_restart(unsigned long addr) setup_mm_for_reboot(); cpu_soft_restart(virt_to_phys(cpu_reset), - is_hyp_mode_available(), addr); +#ifdef CONFIG_KEXEC + !in_crash_kexec