From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc Zyngier Subject: Re: [PATCH 9/9] arm/arm64: KVM: arch timer: Reset CNTV_CTL to 0 Date: Thu, 03 Sep 2015 18:07:15 +0100 Message-ID: <55E87E43.1090900@arm.com> References: <1440942866-23802-1-git-send-email-christoffer.dall@linaro.org> <1440942866-23802-10-git-send-email-christoffer.dall@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1440942866-23802-10-git-send-email-christoffer.dall@linaro.org> Sender: kvm-owner@vger.kernel.org To: Christoffer Dall , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org Cc: Ard Biesheuvel , Laszlo Ersek List-Id: kvmarm@lists.cs.columbia.edu On 30/08/15 14:54, Christoffer Dall wrote: > Provide a better quality of implementation and be architecture compliant > on ARMv7 for the architected timer by resetting the CNTV_CTL to 0 on > reset of the timer, and call kvm_timer_update_state(vcpu) at the same > time, ensuring the timer output is not asserted after, for example, a > PSCI system reset. > > This change alone fixes the UEFI reset issue reported by Laszlo back in > February. > > Cc: Laszlo Ersek > Cc: Ard Biesheuvel > Cc: Drew Jones > Cc: Wei Huang > Cc: Peter Maydell > Signed-off-by: Christoffer Dall Reviewed-by: Marc Zyngier M. -- Jazz is not dead. It just smells funny... From mboxrd@z Thu Jan 1 00:00:00 1970 From: marc.zyngier@arm.com (Marc Zyngier) Date: Thu, 03 Sep 2015 18:07:15 +0100 Subject: [PATCH 9/9] arm/arm64: KVM: arch timer: Reset CNTV_CTL to 0 In-Reply-To: <1440942866-23802-10-git-send-email-christoffer.dall@linaro.org> References: <1440942866-23802-1-git-send-email-christoffer.dall@linaro.org> <1440942866-23802-10-git-send-email-christoffer.dall@linaro.org> Message-ID: <55E87E43.1090900@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 30/08/15 14:54, Christoffer Dall wrote: > Provide a better quality of implementation and be architecture compliant > on ARMv7 for the architected timer by resetting the CNTV_CTL to 0 on > reset of the timer, and call kvm_timer_update_state(vcpu) at the same > time, ensuring the timer output is not asserted after, for example, a > PSCI system reset. > > This change alone fixes the UEFI reset issue reported by Laszlo back in > February. > > Cc: Laszlo Ersek > Cc: Ard Biesheuvel > Cc: Drew Jones > Cc: Wei Huang > Cc: Peter Maydell > Signed-off-by: Christoffer Dall Reviewed-by: Marc Zyngier M. -- Jazz is not dead. It just smells funny...