From nobody Sun Feb 8 03:57:16 2026 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 82A7FC001E0 for ; Mon, 24 Jul 2023 11:13:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231205AbjGXLNm (ORCPT ); Mon, 24 Jul 2023 07:13:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38842 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229612AbjGXLM5 (ORCPT ); Mon, 24 Jul 2023 07:12:57 -0400 Received: from mail-pj1-x102e.google.com (mail-pj1-x102e.google.com [IPv6:2607:f8b0:4864:20::102e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4622C90; Mon, 24 Jul 2023 04:12:56 -0700 (PDT) Received: by mail-pj1-x102e.google.com with SMTP id 98e67ed59e1d1-26813cd7a8aso630553a91.2; Mon, 24 Jul 2023 04:12:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1690197176; x=1690801976; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=5Ys9wsAPg0+pztFlVDRsU5Q6zEu7VPdrAJWtiMgaW7g=; b=NjQTDn3wXm9+uqjSSxUbK5b1TUQdIXQE5ygq0ZyhyXAgpf424nKWwSiCs31PRhogtP kRWA1fF5ZSR3U6EvMfmALHvRp0BET2F1wB6ZdbRAwcXjONio2rYS6CkKa03prZP4iuDG CbSh0PSF2D4qnE8wWFGyqHzkdZgfZgt+MIIWJtfkOdiOFMNYSTWUzkdxblzJ8Ed+K4/e daIkbr1XkyWqUeSfH84qD9E5xJdYEnVjDagrKG5F65r6fdm20uByHCBWwU0qU4riAD1H 7qhvBjHSOWZU1i+Swps1pa3wwlHxpusEGXOygumhPHgY+ugjpWPbNjnXC9OLyPyklBKX WmzQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690197176; x=1690801976; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=5Ys9wsAPg0+pztFlVDRsU5Q6zEu7VPdrAJWtiMgaW7g=; b=STdwMHTBuIufyCQQixxrXqvMQkGUlksGCbvJfPavjWCQO/T0A+6ffQQFABthtumlDl +TKC5vt45IEG5B193VYaOs+9ntRbJy1+m6pb/MKbt1Dbzc8QcsL6v1tcEW+WFyTDlfH5 Z5DfLP70Dk7MeUK/A2Ggp5yIDYgAD7TBso3SyQER1CuCtMwbRPLFjVdzXpgxbmieZpPS Ih+x+R0qCJUxYaRP1bZiCr2tDhsYhXrnRKM5hom/WDgoyx5A4kEVyFGLBX6/FduLofvU /zi8F0t+EMFOJk9ReQ62Vl14a8qxvlcaG4//A4Hl9yd2fee3XZXcy9WSPoQV2WH05f0U FBOw== X-Gm-Message-State: ABy/qLbUFNH+3C4KJWti9GIK+/WpcKVfyrjvFu9GGyRpacbITYpP182e oSMfovySFDrJU/0sSQyXoq0= X-Google-Smtp-Source: APBJJlGgkiR0IQ3pFFWVNAJ+RdFQSwG4eXJZXDQySy2xQxfLn2R1CqxiZG3KTyoQYhHY7vs8YK5s5w== X-Received: by 2002:a17:90b:4c0b:b0:262:ffc4:be7 with SMTP id na11-20020a17090b4c0b00b00262ffc40be7mr10371019pjb.37.1690197175665; Mon, 24 Jul 2023 04:12:55 -0700 (PDT) Received: from localhost.localdomain ([103.7.29.32]) by smtp.gmail.com with ESMTPSA id 20-20020a17090a199400b002682392506bsm990380pji.50.2023.07.24.04.12.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Jul 2023 04:12:54 -0700 (PDT) From: Like Xu X-Google-Original-From: Like Xu To: Alex Williamson , Sean Christopherson Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] KVM: x86/irq: Conditionally register IRQ bypass consumer again Date: Mon, 24 Jul 2023 19:12:36 +0800 Message-ID: <20230724111236.76570-1-likexu@tencent.com> X-Mailer: git-send-email 2.41.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Like Xu As commit 14717e203186 ("kvm: Conditionally register IRQ bypass consumer"): "if we don't support a mechanism for bypassing IRQs, don't register as a consumer. This eliminates meaningless dev_info()s when the connect fails between producer and consumer", such as on Linux hosts where enable_apicv or posted-interrupts capability is unsupported or globally disabled. Cc: Alex Williamson Reported-by: Yong He Closes: https://bugzilla.kernel.org/show_bug.cgi?id=3D217379 Signed-off-by: Like Xu --- arch/x86/kvm/x86.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index a6b9bea62fb8..8b68a5cb3123 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -13185,7 +13185,7 @@ EXPORT_SYMBOL_GPL(kvm_arch_has_noncoherent_dma); =20 bool kvm_arch_has_irq_bypass(void) { - return true; + return enable_apicv && irq_remapping_cap(IRQ_POSTING_CAP); } =20 int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *cons, --=20 2.41.0