From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794061353; b=y9dGj3qvt2IRv5+rBwr+Q8QdF99nULaUdJDFV2ZBwg4baS4eg3k4g+13YM9E29Lod7lN wInWxQ9d5SH/MIDOferlsgl47CXSmCUC3wHpeo3Vdpmy1wp451ssrcAjsoJJVgo+dz2+Q Q6NvTdO1I3ElfRg/VGGsJ0usAod8zvb/KP7ndGyHNeJQjyM39w2+IfNEdJkpKvv5hf8rW nLrulTvUOGHryHa1iu+OHGZDzuq2x93Kn1fSP9VJq5m7MHHAP30/bDBDm4FpisAgOq3fr UkC3Da5ysXqf4D/6IHzaFrGW/UghgrFjxYjoWfjtd5FSTMYYqR+BDnj79dZRFH1T6Qg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794061353; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=k4PpNCx8VM/S29bNIaAosBN6FTF436rPpoW+pa9DMT8=; b=DBjcmnmI420308BKTpewo6pEWvdzj4svpkJSCzoEcBi8KIKG96YNuufdS8KedWRuwfQ/ Orzvwbj7nEudzpwfxLD7ZM/UxW9iPqNyq9gCTnIZg4DXfn8Bayq1EMDUn888PfcilHzjl WSBkzNK1oP/krH56z/odCMa4suzrbagg/kGQlhhX9F7BG8U9bzT4w9cU5z8sdijMC5aBc cyBTfPEm4hSqCCnUZD5S9m5QT9yNKLOwYDxtIsDD5nr9JpqOv0Bczppa6hTJUfwuDMBMr wuY6s2PJU/mq4h6zKgDPiXOT60wo8Y+tRPBMfpb/Tf5l4VtBO0a8SgsK4M+DlQVzw/g== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=L05cQevd; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5D7F5606A326; Sat, 7 Nov 2026 14:22:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=L05cQevd Received: by smtp.kernel.org (Postfix) with ESMTPSA id 060801F008A1; Sat, 7 Nov 2026 14:22:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794061353; bh=k4PpNCx8VM/S29bNIaAosBN6FTF436rPpoW+pa9DMT8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=L05cQevdKlyl2ppCAGAWqPKyeLJWND9bWwJdOLORkUgSXv6gQCLBtjqleLE+wf6Gj syFo/ZQ6Yui2q8+m6aRsRlvhXWyw8Rj8UBDwTtHytWimI54xnlNdnUJFg4RLCpU1Pc hL325YNDqSapFcgadSsqOi5I6rrwMRv4zTmP/f80= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Bibo Mao , Huacai Chen , Sasha Levin Subject: [PATCH 6.12 0480/1536] LoongArch: KVM: Set vcpu->cpu before IN_GUEST_MODE is set Date: Sat, 7 Nov 2026 08:41:36 -0500 Message-ID: <20261107135010.974662207@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134957.653319350@linuxfoundation.org> References: <20261107134957.653319350@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bibo Mao [ Upstream commit 32d05564a6128d59ea876cf9078fe6866a809e14 ] In function kvm_make_vcpu_request(), it will send IPI to physical CPU when vCPU is in IN_GUEST_MODE mode. And physical CPU is set in function kvm_check_vpid(), thus it should be called before IN_GUEST_MODE is set. Otherwise IPI will send to wrong old physical CPU where vCPU is running. Cc: stable@vger.kernel.org Fixes: 2fc3bd86db4b ("LoongArch: KVM: Implement basic vcpu interfaces") Signed-off-by: Bibo Mao Signed-off-by: Huacai Chen Signed-off-by: Sasha Levin --- arch/loongarch/kvm/vcpu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c index 4563bb47f804e..f94013d23919a 100644 --- a/arch/loongarch/kvm/vcpu.c +++ b/arch/loongarch/kvm/vcpu.c @@ -277,10 +277,10 @@ static int kvm_pre_enter_guest(struct kvm_vcpu *vcpu) */ local_irq_disable(); kvm_deliver_exception(vcpu); + kvm_check_vpid(vcpu); /* Make sure the vcpu mode has been written */ smp_store_mb(vcpu->mode, IN_GUEST_MODE); kvm_deliver_intr(vcpu); - kvm_check_vpid(vcpu); /* * Called after function kvm_check_vpid() -- 2.53.0