Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755362AbbDXHyR (ORCPT ); Fri, 24 Apr 2015 03:54:17 -0400 Received: from mail-pa0-f44.google.com ([209.85.220.44]:36465 "EHLO mail-pa0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933681AbbDXHyK (ORCPT ); Fri, 24 Apr 2015 03:54:10 -0400 From: AKASHI Takahiro To: catalin.marinas@arm.com, will.deacon@arm.com, vgoyal@redhat.com, hbabus@us.ibm.com Cc: geoff@infradead.org, broonie@kernel.org, david.griego@linaro.org, kexec@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linaro-kernel@lists.linaro.org, linux-kernel@vger.kernel.org, AKASHI Takahiro Subject: [v2 3/5] arm64: kdump: do not go into EL2 before starting a crash dump kernel Date: Fri, 24 Apr 2015 16:53:06 +0900 Message-Id: <1429861989-8417-4-git-send-email-takahiro.akashi@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1429861989-8417-1-git-send-email-takahiro.akashi@linaro.org> References: <1429861989-8417-1-git-send-email-takahiro.akashi@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1341 Lines: 44 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 --- arch/arm64/kernel/process.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index d894d3e..9859f5c 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c @@ -48,6 +48,7 @@ #include #include #include +#include #include #include #include @@ -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 && +#endif + is_hyp_mode_available(), + addr); /* Should never get here */ BUG(); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/