From: takahiro.akashi@linaro.org (AKASHI Takahiro)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/2] fixup! arm64: kdump: implement machine_crash_shutdown()
Date: Tue, 20 Oct 2015 16:58:26 +0900 [thread overview]
Message-ID: <1445327907-23274-2-git-send-email-takahiro.akashi@linaro.org> (raw)
In-Reply-To: <1445327907-23274-1-git-send-email-takahiro.akashi@linaro.org>
Without this patch, crash dump kernel won't be able to boot if a kvm
guest is running at crash. This is because we don't have any chance
to reset EL2 mode at crash and so "switch to EL2" in cpu_reset fails.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
---
arch/arm64/kernel/machine_kexec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c
index 0edb7ee..d14dd05 100644
--- a/arch/arm64/kernel/machine_kexec.c
+++ b/arch/arm64/kernel/machine_kexec.c
@@ -271,7 +271,7 @@ static void soft_restart(unsigned long addr)
{
setup_mm_for_reboot();
cpu_soft_restart(virt_to_phys(cpu_reset), addr,
- is_hyp_mode_available());
+ (in_crash_kexec ? 0 : is_hyp_mode_available()));
BUG(); /* Should never get here. */
}
--
1.7.9.5
next prev parent reply other threads:[~2015-10-20 7:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-20 7:58 [PATCH 0/2] arm64: kexec/kdump fixes for v10 AKASHI Takahiro
2015-10-20 7:58 ` AKASHI Takahiro [this message]
2015-10-20 7:58 ` [PATCH 2/2] fixup! arm64: kvm: allows kvm cpu hotplug AKASHI Takahiro
2015-10-20 16:22 ` James Morse
2015-10-20 19:05 ` [PATCH 0/2] arm64: kexec/kdump fixes for v10 Geoff Levand
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