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 C3043C6FD1D for ; Wed, 15 Mar 2023 17:17:43 +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-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID: References:Mime-Version:In-Reply-To:Date:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=jeN8MVsJevgTI9d7LCMInVvaGPMs/mZPI40ACKNJacY=; b=1zCpiJbi8A3y5V3yGTNf/HhwSi Q2kD9RrIWKyrnhLBHKsmXVw+0h5/s7e6MmVgC1BNnIG8v4IxCnwQR5uCT1wP5mqelpHfW5RC0Zi8E iBsuRBqNbPJB8OXSYtZKI8dwLl8kMo7Oa77MxbMHMX541tB+vISoXRr2mUM1qPeVDY7twlsCvChNp k/cUILJdi2sDlNJdz/YMGialXFO78A57bfD6XoBXCgWqtue1tbR+sTqeToqiLnosDzZeXhB0j3F3L rioi1gKqE8HRXiF3xfyJzV0rhYOo+EiILPAYI1iVIu6Aa0BTNA0aW6RZJ5rW27GyFI1inYNyBVUTR oed0B+IA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pcUk7-00E8KC-0g; Wed, 15 Mar 2023 17:16:51 +0000 Received: from mail-pj1-x104a.google.com ([2607:f8b0:4864:20::104a]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pcUk4-00E8Ix-1j for linux-arm-kernel@lists.infradead.org; Wed, 15 Mar 2023 17:16:49 +0000 Received: by mail-pj1-x104a.google.com with SMTP id cp21-20020a17090afb9500b0023c061f2bd0so1265452pjb.5 for ; Wed, 15 Mar 2023 10:16:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; t=1678900607; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=x/aF4Es41tXjL7SKFsAs+MrZMJLEL8H3oIxff+R9CG4=; b=gV4ywxElAUQQ95X+ZnUag11P8fOeUU5/FuJNXgvuVVqqwzWa9UVMzK4YuACa9iarwg U8PBDr4gk47JL0PBAbz4rjbfHjgoU538eo5UhJcmg6Ljokw1pMXoSJWegHklt2RtxmhR 0iGlr/3Y11mSOlpBxa+tZODXHTrCrJO/oOSvWQnIANjeZ5rDF3VK3oDnNZW9TseqcSq6 B8qb9ZSg1kA/UAryZhn3q8KFMSUhdTAKqMwrnWhfYD7pfrmDK3CHJjYyd/q7aD+ysrGz yifV/dC28ydJLwXa1FnFaii8yj8TyA8J+55bnll+chj1C20vY5zPpyJ1XgPR2byljT/T H6rQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678900607; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=x/aF4Es41tXjL7SKFsAs+MrZMJLEL8H3oIxff+R9CG4=; b=5LpPOzawvrVJjNwDGY9iz9k13c0nvAf8jjC2Q+SXDxRUH5LPZMDhUH+9ukn6Mjn0GM 8Y7LSum1Q9/5sl7rCoY3UrhjA5OQUOZpl1V7YqHqA9HFdkbqAuv9S3Y8GFlz6GGOz/LR /pqVXaILaZqRT9SSKH9XJ8aATKoS9DVUJmFG9ubb340vObi1BoHEY4ZiFX06f5dJntde /7gz9LNqNjMD86Cv25QNwv382L5ttrTiPkKWn26DaiZxclzh+xJqGychJ/ZIVC0dxqU8 TU5GTXOI77ImUw2suBui9PhBCO1TpFta1FU7sl7VsPaoVtrgQv3o/PUGIS7Im+hoS0ai SvFA== X-Gm-Message-State: AO0yUKV0T+PzXcRAgoFyBKQQ8qbgxocxkFH606AzcwIdJNfNGHPh5g6P wNHgriRzL9YkFGCUN+5dCySFt3vaOs8= X-Google-Smtp-Source: AK7set8rJXOntLa7QM2hdktYoMgS9UfLnxiJhuIiWnthSPQ6oY1Np9ERejXRNpUdaoysiVc8NpsTJJwcmvs= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a65:6386:0:b0:4fb:a38d:c09b with SMTP id h6-20020a656386000000b004fba38dc09bmr906pgv.10.1678900607084; Wed, 15 Mar 2023 10:16:47 -0700 (PDT) Date: Wed, 15 Mar 2023 10:16:45 -0700 In-Reply-To: <20221003235722.2085145-1-aik@ozlabs.ru> Mime-Version: 1.0 References: <20221003235722.2085145-1-aik@ozlabs.ru> Message-ID: Subject: Re: [PATCH kernel v4] KVM: PPC: Make KVM_CAP_IRQFD_RESAMPLE support platform dependent From: Sean Christopherson To: Alexey Kardashevskiy Cc: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm-riscv@lists.infradead.org, Paolo Bonzini , Anup Patel , kvm-ppc@vger.kernel.org, Nicholas Piggin , Marc Zyngier , Michael Ellerman , Christian Borntraeger , Janosch Frank , Claudio Imbrenda X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230315_101648_576326_93A8160F X-CRM114-Status: GOOD ( 15.54 ) 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-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org +Michael and KVM s390 maintainers On Tue, Oct 04, 2022, Alexey Kardashevskiy wrote: > When introduced, IRQFD resampling worked on POWER8 with XICS. However > KVM on POWER9 has never implemented it - the compatibility mode code > ("XICS-on-XIVE") misses the kvm_notify_acked_irq() call and the native > XIVE mode does not handle INTx in KVM at all. > > This moved the capability support advertising to platforms and stops > advertising it on XIVE, i.e. POWER9 and later. > > This should cause no behavioural change for other architectures. > > Signed-off-by: Alexey Kardashevskiy > Acked-by: Nicholas Piggin > Acked-by: Marc Zyngier > --- If no one objects, I'll grab this for 6.4 and route it through kvm-x86/generic. > diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c > index fb1490761c87..908ce8bd91c9 100644 > --- a/arch/powerpc/kvm/powerpc.c > +++ b/arch/powerpc/kvm/powerpc.c > @@ -593,6 +593,12 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) > break; > #endif > > +#ifdef CONFIG_HAVE_KVM_IRQFD > + case KVM_CAP_IRQFD_RESAMPLE: > + r = !xive_enabled(); > + break; > +#endif @PPC folks, do you want to avoid the #ifdef? If so, I can tweak to this when applying. case KVM_CAP_IRQFD_RESAMPLE: r = IS_ENABLED(CONFIG_HAVE_KVM_IRQFD) && !xive_enabled(); break; _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel