From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 21ACCC433EF for ; Mon, 7 Mar 2022 15:44:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241110AbiCGPpp (ORCPT ); Mon, 7 Mar 2022 10:45:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51536 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232892AbiCGPpn (ORCPT ); Mon, 7 Mar 2022 10:45:43 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5EAD27E082 for ; Mon, 7 Mar 2022 07:44:49 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 12E2BB815DE for ; Mon, 7 Mar 2022 15:44:48 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BB323C340E9; Mon, 7 Mar 2022 15:44:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1646667886; bh=46Iuh4M0Yx711/ZCyonyh49TOCQRaLzY7EfynwAiaHA=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=IT8TsGWLhuSy48KFENgmaLmx/UWUclb7gvL3aECCq9RbXVKZlugBUSzl2We/YcyJt s+mSEffy4c/N27MQSVwG2Uc23xMos0gjA1WVu4LvUjCdWnXZGdH76+juZOfg7KKefB 2A+0LqoEo2dlS4cxWaTMRAFoVewSwhwRVUjr1CJoeDUmxZDobUIufbIRwmJyMOMEue mTmnkgk2nlaLQboEJbecW+uKs6Tjx6VfbPT5hmHQSRjc8RS6a5SOuXZ8UJvMH1LGKk moKQbarCusJnyG66j2u8Q7VSptFUCdNBIIrC22xuJQXjVrl8DbMhN94msfl5aqzcYU wnAlI74y2Qwzg== Received: from disco-boy.misterjones.org ([51.254.78.96] helo=www.loen.fr) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1nRFXQ-00CpTa-D8; Mon, 07 Mar 2022 15:44:44 +0000 MIME-Version: 1.0 Date: Mon, 07 Mar 2022 15:44:43 +0000 From: Marc Zyngier To: Alexandru Elisei Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, Andre Przywara , Christoffer Dall , Jintack Lim , Haibo Xu , Ganapatrao Kulkarni , Chase Conklin , "Russell King (Oracle)" , James Morse , Suzuki K Poulose , karl.heubaum@oracle.com, mihai.carabas@oracle.com, miguel.luis@oracle.com, kernel-team@android.com Subject: Re: [PATCH v6 43/64] KVM: arm64: nv: arch_timer: Support hyp timer emulation In-Reply-To: References: <20220128121912.509006-1-maz@kernel.org> <20220128121912.509006-44-maz@kernel.org> User-Agent: Roundcube Webmail/1.4.13 Message-ID: <503754e615b9bc7605c379dd7f2549a1@kernel.org> X-Sender: maz@kernel.org Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: alexandru.elisei@arm.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, andre.przywara@arm.com, christoffer.dall@arm.com, jintack@cs.columbia.edu, haibo.xu@linaro.org, gankulkarni@os.amperecomputing.com, chase.conklin@arm.com, linux@armlinux.org.uk, james.morse@arm.com, suzuki.poulose@arm.com, karl.heubaum@oracle.com, mihai.carabas@oracle.com, miguel.luis@oracle.com, kernel-team@android.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 2022-03-07 15:23, Alexandru Elisei wrote: > Hi, > > On Fri, Jan 28, 2022 at 12:18:51PM +0000, Marc Zyngier wrote: >> From: Christoffer Dall >> >> Emulating EL2 also means emulating the EL2 timers. To do so, we expand >> our timer framework to deal with at most 4 timers. At any given time, >> two timers are using the HW timers, and the two others are purely >> emulated. >> >> The role of deciding which is which at any given time is left to a >> mapping function which is called every time we need to make such a >> decision. >> >> Signed-off-by: Christoffer Dall >> [maz: added CNTVOFF support, general reworking for v4.8] >> Signed-off-by: Marc Zyngier >> --- >> arch/arm64/include/asm/kvm_host.h | 4 + >> arch/arm64/kvm/arch_timer.c | 165 >> ++++++++++++++++++++++++++++-- >> arch/arm64/kvm/sys_regs.c | 7 +- >> arch/arm64/kvm/trace_arm.h | 6 +- >> arch/arm64/kvm/vgic/vgic.c | 15 +++ >> include/kvm/arm_arch_timer.h | 8 +- >> include/kvm/arm_vgic.h | 1 + >> 7 files changed, 194 insertions(+), 12 deletions(-) >> > [..] >> @@ -1301,6 +1445,7 @@ static void set_timer_irqs(struct kvm *kvm, int >> vtimer_irq, int ptimer_irq) >> kvm_for_each_vcpu(i, vcpu, kvm) { >> vcpu_vtimer(vcpu)->irq.irq = vtimer_irq; >> vcpu_ptimer(vcpu)->irq.irq = ptimer_irq; >> + /* TODO: Add support for hv/hp timers */ >> } >> } >> >> @@ -1311,6 +1456,8 @@ int kvm_arm_timer_set_attr(struct kvm_vcpu >> *vcpu, struct kvm_device_attr *attr) >> struct arch_timer_context *ptimer = vcpu_ptimer(vcpu); >> int irq; >> >> + /* TODO: Add support for hv/hp timers */ > > Is the patch unfinished? Just like the rest of the kernel. M. -- Jazz is not dead. It just smells funny... From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3A560C433FE for ; Mon, 7 Mar 2022 15:44:53 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id B2AD94B131; Mon, 7 Mar 2022 10:44:52 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Authentication-Results: mm01.cs.columbia.edu (amavisd-new); dkim=softfail (fail, message has been altered) header.i=@kernel.org Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id op8gq7t7KaK9; Mon, 7 Mar 2022 10:44:51 -0500 (EST) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 9F8094B172; Mon, 7 Mar 2022 10:44:51 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 8B2164B172 for ; Mon, 7 Mar 2022 10:44:50 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id gTsgBtp0YH+X for ; Mon, 7 Mar 2022 10:44:49 -0500 (EST) Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 4D9EA4B16F for ; Mon, 7 Mar 2022 10:44:49 -0500 (EST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id EED7FB815B8; Mon, 7 Mar 2022 15:44:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BB323C340E9; Mon, 7 Mar 2022 15:44:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1646667886; bh=46Iuh4M0Yx711/ZCyonyh49TOCQRaLzY7EfynwAiaHA=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=IT8TsGWLhuSy48KFENgmaLmx/UWUclb7gvL3aECCq9RbXVKZlugBUSzl2We/YcyJt s+mSEffy4c/N27MQSVwG2Uc23xMos0gjA1WVu4LvUjCdWnXZGdH76+juZOfg7KKefB 2A+0LqoEo2dlS4cxWaTMRAFoVewSwhwRVUjr1CJoeDUmxZDobUIufbIRwmJyMOMEue mTmnkgk2nlaLQboEJbecW+uKs6Tjx6VfbPT5hmHQSRjc8RS6a5SOuXZ8UJvMH1LGKk moKQbarCusJnyG66j2u8Q7VSptFUCdNBIIrC22xuJQXjVrl8DbMhN94msfl5aqzcYU wnAlI74y2Qwzg== Received: from disco-boy.misterjones.org ([51.254.78.96] helo=www.loen.fr) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1nRFXQ-00CpTa-D8; Mon, 07 Mar 2022 15:44:44 +0000 MIME-Version: 1.0 Date: Mon, 07 Mar 2022 15:44:43 +0000 From: Marc Zyngier To: Alexandru Elisei Subject: Re: [PATCH v6 43/64] KVM: arm64: nv: arch_timer: Support hyp timer emulation In-Reply-To: References: <20220128121912.509006-1-maz@kernel.org> <20220128121912.509006-44-maz@kernel.org> User-Agent: Roundcube Webmail/1.4.13 Message-ID: <503754e615b9bc7605c379dd7f2549a1@kernel.org> X-Sender: maz@kernel.org X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: alexandru.elisei@arm.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, andre.przywara@arm.com, christoffer.dall@arm.com, jintack@cs.columbia.edu, haibo.xu@linaro.org, gankulkarni@os.amperecomputing.com, chase.conklin@arm.com, linux@armlinux.org.uk, james.morse@arm.com, suzuki.poulose@arm.com, karl.heubaum@oracle.com, mihai.carabas@oracle.com, miguel.luis@oracle.com, kernel-team@android.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Cc: kernel-team@android.com, kvm@vger.kernel.org, Andre Przywara , Christoffer Dall , Chase Conklin , kvmarm@lists.cs.columbia.edu, mihai.carabas@oracle.com, Ganapatrao Kulkarni , "Russell King \(Oracle\)" , linux-arm-kernel@lists.infradead.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu On 2022-03-07 15:23, Alexandru Elisei wrote: > Hi, > > On Fri, Jan 28, 2022 at 12:18:51PM +0000, Marc Zyngier wrote: >> From: Christoffer Dall >> >> Emulating EL2 also means emulating the EL2 timers. To do so, we expand >> our timer framework to deal with at most 4 timers. At any given time, >> two timers are using the HW timers, and the two others are purely >> emulated. >> >> The role of deciding which is which at any given time is left to a >> mapping function which is called every time we need to make such a >> decision. >> >> Signed-off-by: Christoffer Dall >> [maz: added CNTVOFF support, general reworking for v4.8] >> Signed-off-by: Marc Zyngier >> --- >> arch/arm64/include/asm/kvm_host.h | 4 + >> arch/arm64/kvm/arch_timer.c | 165 >> ++++++++++++++++++++++++++++-- >> arch/arm64/kvm/sys_regs.c | 7 +- >> arch/arm64/kvm/trace_arm.h | 6 +- >> arch/arm64/kvm/vgic/vgic.c | 15 +++ >> include/kvm/arm_arch_timer.h | 8 +- >> include/kvm/arm_vgic.h | 1 + >> 7 files changed, 194 insertions(+), 12 deletions(-) >> > [..] >> @@ -1301,6 +1445,7 @@ static void set_timer_irqs(struct kvm *kvm, int >> vtimer_irq, int ptimer_irq) >> kvm_for_each_vcpu(i, vcpu, kvm) { >> vcpu_vtimer(vcpu)->irq.irq = vtimer_irq; >> vcpu_ptimer(vcpu)->irq.irq = ptimer_irq; >> + /* TODO: Add support for hv/hp timers */ >> } >> } >> >> @@ -1311,6 +1456,8 @@ int kvm_arm_timer_set_attr(struct kvm_vcpu >> *vcpu, struct kvm_device_attr *attr) >> struct arch_timer_context *ptimer = vcpu_ptimer(vcpu); >> int irq; >> >> + /* TODO: Add support for hv/hp timers */ > > Is the patch unfinished? Just like the rest of the kernel. M. -- Jazz is not dead. It just smells funny... _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F3B9CC433F5 for ; Mon, 7 Mar 2022 15:46:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Message-ID:References:In-Reply-To:Subject:Cc:To:From :Date:MIME-Version:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; 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Mon, 7 Mar 2022 15:44:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BB323C340E9; Mon, 7 Mar 2022 15:44:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1646667886; bh=46Iuh4M0Yx711/ZCyonyh49TOCQRaLzY7EfynwAiaHA=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=IT8TsGWLhuSy48KFENgmaLmx/UWUclb7gvL3aECCq9RbXVKZlugBUSzl2We/YcyJt s+mSEffy4c/N27MQSVwG2Uc23xMos0gjA1WVu4LvUjCdWnXZGdH76+juZOfg7KKefB 2A+0LqoEo2dlS4cxWaTMRAFoVewSwhwRVUjr1CJoeDUmxZDobUIufbIRwmJyMOMEue mTmnkgk2nlaLQboEJbecW+uKs6Tjx6VfbPT5hmHQSRjc8RS6a5SOuXZ8UJvMH1LGKk moKQbarCusJnyG66j2u8Q7VSptFUCdNBIIrC22xuJQXjVrl8DbMhN94msfl5aqzcYU wnAlI74y2Qwzg== Received: from disco-boy.misterjones.org ([51.254.78.96] helo=www.loen.fr) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1nRFXQ-00CpTa-D8; Mon, 07 Mar 2022 15:44:44 +0000 MIME-Version: 1.0 Date: Mon, 07 Mar 2022 15:44:43 +0000 From: Marc Zyngier To: Alexandru Elisei Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, Andre Przywara , Christoffer Dall , Jintack Lim , Haibo Xu , Ganapatrao Kulkarni , Chase Conklin , "Russell King (Oracle)" , James Morse , Suzuki K Poulose , karl.heubaum@oracle.com, mihai.carabas@oracle.com, miguel.luis@oracle.com, kernel-team@android.com Subject: Re: [PATCH v6 43/64] KVM: arm64: nv: arch_timer: Support hyp timer emulation In-Reply-To: References: <20220128121912.509006-1-maz@kernel.org> <20220128121912.509006-44-maz@kernel.org> User-Agent: Roundcube Webmail/1.4.13 Message-ID: <503754e615b9bc7605c379dd7f2549a1@kernel.org> X-Sender: maz@kernel.org X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: alexandru.elisei@arm.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, andre.przywara@arm.com, christoffer.dall@arm.com, jintack@cs.columbia.edu, haibo.xu@linaro.org, gankulkarni@os.amperecomputing.com, chase.conklin@arm.com, linux@armlinux.org.uk, james.morse@arm.com, suzuki.poulose@arm.com, karl.heubaum@oracle.com, mihai.carabas@oracle.com, miguel.luis@oracle.com, kernel-team@android.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220307_074449_724541_36C10181 X-CRM114-Status: GOOD ( 20.70 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 2022-03-07 15:23, Alexandru Elisei wrote: > Hi, > > On Fri, Jan 28, 2022 at 12:18:51PM +0000, Marc Zyngier wrote: >> From: Christoffer Dall >> >> Emulating EL2 also means emulating the EL2 timers. To do so, we expand >> our timer framework to deal with at most 4 timers. At any given time, >> two timers are using the HW timers, and the two others are purely >> emulated. >> >> The role of deciding which is which at any given time is left to a >> mapping function which is called every time we need to make such a >> decision. >> >> Signed-off-by: Christoffer Dall >> [maz: added CNTVOFF support, general reworking for v4.8] >> Signed-off-by: Marc Zyngier >> --- >> arch/arm64/include/asm/kvm_host.h | 4 + >> arch/arm64/kvm/arch_timer.c | 165 >> ++++++++++++++++++++++++++++-- >> arch/arm64/kvm/sys_regs.c | 7 +- >> arch/arm64/kvm/trace_arm.h | 6 +- >> arch/arm64/kvm/vgic/vgic.c | 15 +++ >> include/kvm/arm_arch_timer.h | 8 +- >> include/kvm/arm_vgic.h | 1 + >> 7 files changed, 194 insertions(+), 12 deletions(-) >> > [..] >> @@ -1301,6 +1445,7 @@ static void set_timer_irqs(struct kvm *kvm, int >> vtimer_irq, int ptimer_irq) >> kvm_for_each_vcpu(i, vcpu, kvm) { >> vcpu_vtimer(vcpu)->irq.irq = vtimer_irq; >> vcpu_ptimer(vcpu)->irq.irq = ptimer_irq; >> + /* TODO: Add support for hv/hp timers */ >> } >> } >> >> @@ -1311,6 +1456,8 @@ int kvm_arm_timer_set_attr(struct kvm_vcpu >> *vcpu, struct kvm_device_attr *attr) >> struct arch_timer_context *ptimer = vcpu_ptimer(vcpu); >> int irq; >> >> + /* TODO: Add support for hv/hp timers */ > > Is the patch unfinished? Just like the rest of the kernel. M. -- Jazz is not dead. It just smells funny... _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel