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[82.218.84.190]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a9ee0dc578bsm885753166b.104.2024.11.13.06.49.55 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Wed, 13 Nov 2024 06:49:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=philjordan-eu.20230601.gappssmtp.com; s=20230601; t=1731509396; x=1732114196; darn=nongnu.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=o9i8rVTiyYcoZex4Ipmw+6Bs18ZPMVTcpLGMM43twc0=; b=WUXqXhn1/ap2yRpIG4m/7wXUibuDNeXQ7IVeEfM6yah9ZM5qVpwOsdCLqq8wi7hH4n ymr+4/D9F3JUmj3w6mEr/yhlEObSGxvd6sD4s04qpvv2z/st8k5xlaf5zjkp99uwSVgP zNb2sEhGAMF4yNX6qY37Su0KjxVqZ49To5zNoMhahzmkaDew+Ynbo6KRhwef4SaH4SrH q8Ij1ukBIphcel+y2W3zoslubCd6QrgrvelcElsxKB7aXjEEDozxtSXh+QvXjaz1BKUl ZxCyRfBOJnk2uIwJS8KlKYLUbm3TBintQ8zzRMGAzarClkewB1lOcED2SSZ6UqG8FkCp RnqA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731509396; x=1732114196; 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=o9i8rVTiyYcoZex4Ipmw+6Bs18ZPMVTcpLGMM43twc0=; b=k7FODWvaHQFw5KiJIWKnAjVC5jLtFSc8D4cEgbrt4bBpxhWsMt+xKqkwhA/ZnHb32q dZA0Dq7+iGsNvzsQ0Ogrka5k/CTZ7i9iJiu559v7DVZYKuo+LfUYoqvw0zjgo4KcZ+Cb 7qLrB048VnA5fQ2SWF+rBnVGgrzZzDQw/yvC5I1CSPNd7kAQ16WMJ/P1DRwB5K50YojD yA4IJrY1KSiZ6/W8QabsURN+QP2wzlskJFrkW51ElJU6eZL+OKjr81GtC4mgi1uh/T0U V3vM6Pg+q57f0PL/7R71xAAEsI87IYVIV7Nofj1eDxh8YwYrn/r7J2ep6lOf7QX/op9K cM8w== X-Gm-Message-State: AOJu0Ywb8MpZ2XttrPLhGI9c3UttwFHB8nFRv3x5/b9maoz5fXYVmzYP wM6Ec5xU7PP1z7IocKHy0hok2AKf8kaNLN1GGJic6HixqM3D5W6VKIPBwndBWz8Pr5q79UWv57Z LTg== X-Google-Smtp-Source: AGHT+IEzPUha6PvG5sjDVmqyHZOgw15Y7y/W4eMrlt2+jPubPDU2xoa5rZ5pp/2iadz7sgiUm0BA9w== X-Received: by 2002:a17:907:3e16:b0:a9a:cf0:8fd4 with SMTP id a640c23a62f3a-a9eefee9b66mr1769121366b.18.1731509396215; Wed, 13 Nov 2024 06:49:56 -0800 (PST) From: Phil Dennis-Jordan To: qemu-devel@nongnu.org, kvm@vger.kernel.org, mtosatti@redhat.com, pbonzini@redhat.com Cc: santosh.shukla@amd.com, suravee.suthikulpanit@amd.com, Phil Dennis-Jordan Subject: [PATCH] i386/kvm: Fix kvm_enable_x2apic link error in non-KVM builds Date: Wed, 13 Nov 2024 15:49:23 +0100 Message-Id: <20241113144923.41225-1-phil@philjordan.eu> X-Mailer: git-send-email 2.39.3 (Apple Git-145) MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: neutral client-ip=2a00:1450:4864:20::62b; envelope-from=phil@philjordan.eu; helo=mail-ej1-x62b.google.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NEUTRAL=0.779 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @philjordan-eu.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1731509414185116600 Content-Type: text/plain; charset="utf-8" It appears that existing call sites for the kvm_enable_x2apic() function rely on the compiler eliding the calls during optimisation when building with KVM disabled, or on platforms other than Linux, where that function is declared but not defined. This fragile reliance recently broke down when commit b12cb38 added a new call site which apparently failed to be optimised away when building QEMU on macOS with clang, resulting in a link error. This change moves the function declaration into the existing #if CONFIG_KVM block in the same header file, while the corresponding #else block now #defines the symbol as 0, same as for various other KVM-specific query functions. Signed-off-by: Phil Dennis-Jordan --- target/i386/kvm/kvm_i386.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/target/i386/kvm/kvm_i386.h b/target/i386/kvm/kvm_i386.h index 9de9c0d3038..7ce47388d90 100644 --- a/target/i386/kvm/kvm_i386.h +++ b/target/i386/kvm/kvm_i386.h @@ -21,17 +21,18 @@ (kvm_irqchip_in_kernel() && !kvm_irqchip_is_split()) #define kvm_ioapic_in_kernel() \ (kvm_irqchip_in_kernel() && !kvm_irqchip_is_split()) +bool kvm_enable_x2apic(void); =20 #else =20 #define kvm_pit_in_kernel() 0 #define kvm_pic_in_kernel() 0 #define kvm_ioapic_in_kernel() 0 +#define kvm_enable_x2apic() 0 =20 #endif /* CONFIG_KVM */ =20 bool kvm_has_smm(void); -bool kvm_enable_x2apic(void); bool kvm_hv_vpindex_settable(void); bool kvm_enable_hypercall(uint64_t enable_mask); =20 --=20 2.39.3 (Apple Git-145)