From: swarren@wwwdotorg.org (Stephen Warren) Date: Thu, 03 Jan 2013 14:18:27 -0700 Subject: [PATCH] ARM: tegra: add kexec support to defconfig In-Reply-To: <20130103210541.GB4412@avionic-0098.adnet.avionic-design.de> References: <1357161141-26430-1-git-send-email-swarren@wwwdotorg.org> <20130103210541.GB4412@avionic-0098.adnet.avionic-design.de> Message-ID: <50E5F5A3.1060507@wwwdotorg.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 01/03/2013 02:05 PM, Thierry Reding wrote: > On Wed, Jan 02, 2013 at 02:12:21PM -0700, Stephen Warren wrote: >> From: Stephen Warren >> >> Signed-off-by: Stephen Warren --- >> arch/arm/configs/tegra_defconfig | 1 + 1 file changed, 1 >> insertion(+) >> >> diff --git a/arch/arm/configs/tegra_defconfig >> b/arch/arm/configs/tegra_defconfig index 742dc41..e621603 100644 >> --- a/arch/arm/configs/tegra_defconfig +++ >> b/arch/arm/configs/tegra_defconfig @@ -34,6 +34,7 @@ >> CONFIG_AEABI=y CONFIG_HIGHMEM=y CONFIG_ZBOOT_ROM_TEXT=0x0 >> CONFIG_ZBOOT_ROM_BSS=0x0 +CONFIG_KEXEC=y CONFIG_CPU_FREQ=y >> CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y CONFIG_CPU_IDLE=y > > Interesting. What do you plan to use this for? kdump? I plan to burn a kernel (and a small stub, and a DTB) into flash instead of U-Boot, and hence not have to rely on any bootloader. Even ignoring that, a quick scp of a new kernel to a target followed by a kexec is faster than rebooting all the way through U-Boot's slower Ethernet support to boot a new kernel.