From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-178.mta0.migadu.com (out-178.mta0.migadu.com [91.218.175.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5692E2459F1 for ; Tue, 8 Jul 2025 22:25:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.178 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752013503; cv=none; b=USSxbkf28qvkRckUEsYp7BKPg35bAJgRBVMIBpjZ42KKF3agG8zTZtjbUrQCkFiC3OyMn7Gj45WdaZqJ2iafH+OZhI8J5kLgBGoMqZxGiiC0MSG8n4yZ/vwfBqjNGurYn1Bqz9xTG2wpAGvXNAKCJBgOn7Vxc+9TmosQS8O924g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752013503; c=relaxed/simple; bh=l6krfXpeh11Ta0y6LX9X7L4QIzGIeN9upT1tk3QaitQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=TA2Q2gDtEe8B5Pqzw9XcitJvP1v5BtVccJgRR/iACyZvqMlEnBPxvgTDhM/arD2Q6VyOa9v3khurk3fU5w0P0Jd876vAHnWm6aZnXkndBfzQgFNu5qIwS+GG7KoHjuXFF4DqgPM1F1WtzIWKyB84sQ0Nry6tCbVDHPmlS+WMTRk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=ObErs2xw; arc=none smtp.client-ip=91.218.175.178 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="ObErs2xw" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1752013489; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=0gHIIODrhhdGVls2rVmx9Uyz58la+lWfKW4V8WRh8gI=; b=ObErs2xwKsqnb0SvubU2oaDqfFoLy9/r7regRmN+aeuOP0dEicWqzO8kBD+NoJw/5Pax+t GSuifAGT1pEeHmnDpPUnYR76R8ZHopXgM/d2EST9N+JVHjP91gAXpLer/RgeRV+HVO7K5P UMP10J9uQjXq/GbJH3MUl2Ewn4DUrvc= From: Oliver Upton To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Sascha Bischoff Cc: Oliver Upton , nd , maz@kernel.org, Joey Gouly , Suzuki Poulose , yuzenghui@huawei.com, will@kernel.org, tglx@linutronix.de, lpieralisi@kernel.org, Timothy Hayes Subject: Re: [PATCH v2 0/5] KVM: arm64: Enable GICv3 guests on GICv5 hosts using FEAT_GCIE_LEGACY Date: Tue, 8 Jul 2025 15:24:38 -0700 Message-Id: <175201339872.1946470.9170349330766710670.b4-ty@linux.dev> In-Reply-To: <20250627100847.1022515-1-sascha.bischoff@arm.com> References: <20250627100847.1022515-1-sascha.bischoff@arm.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT On Fri, 27 Jun 2025 10:09:01 +0000, Sascha Bischoff wrote: > This series introduces support for running GICv3 guests on GICv5 hosts > by leveraging the GICv5 legacy compatibility feature > (FEAT_GCIE_LEGACY). The main motivation is to enable existing GICv3 > VMs on GICv5 system without VM or VMM modifications - things should > work out of the box. > > The changes are focused on two main areas: > > [...] I've picked this up now that the GICv5 driver is baking in -next. No promises that these patches actually land in 6.17 (if the host side doesn't land) but I'm quite happy with the KVM bits. Applied to next, thanks! [1/5] irqchip/gic-v5: Skip deactivate for forwarded PPI interrupts https://git.kernel.org/kvmarm/kvmarm/c/244e9a89ca76 [2/5] irqchip/gic-v5: Populate struct gic_kvm_info https://git.kernel.org/kvmarm/kvmarm/c/1ec38ce3d024 [3/5] arm64/sysreg: Add ICH_VCTLR_EL2 https://git.kernel.org/kvmarm/kvmarm/c/b62f4b5dec91 [4/5] KVM: arm64: gic-v5: Support GICv3 compat https://git.kernel.org/kvmarm/kvmarm/c/c017e49ed138 [5/5] KVM: arm64: gic-v5: Probe for GICv5 https://git.kernel.org/kvmarm/kvmarm/c/ff2aa6495d4b -- Best, Oliver