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=1793831249; b=0+FzibvO0uV3ZhfEhRCUN8A7o9wLagg591QVH1c/pVfLNCJDstoAQeyacOzuLunCMcu+ A4HbsrAiRlvVgmaxbOcbwD4qok4rENCvqvLZzd8ECZP4mBoM9I7MM9DAahVgcpI/c97w1 oAiJLQvp/m+qaxmD1+JxGMwwlZ5B29uyD8BsD+yDf6/n1nm3p02vTtFaRYxrE/i/EDhZo KX1CGBFDB6vuit8WqALyoyAIZWH2Cu30F3aobJm70b5WR9gBGl110roisKpccnGVOtETG wToTtDtdyGgI1ZQFrd9HwM7uxli3IVpDEcyXNl8aE9wcsq4uSfEMJcA3Ph6yVR6B50g== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793831249; 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=UfRY7YsDFKkhnZXiW7hRnenVMJIsQWD2zrLxOfHR5l4=; b=VZQQ7at7K6TxeyzPOH3mZnqrhJO8flNzsUP7xv9mbLUANS5bcXbujz1RjE2GQrLFDNdq 2Y2WJEc5puXyjLNb5I3mVlRpORG4WWIhCsZ/os2btXminvivtfkh+ILwxvc5ugwLftomt 9tfYD0hr9k/pUJXKFZ5mwpCY9dfycSGp4O8aXo8de+auI+3Aw2Y07KzHXDLzwPi/V6HAH m5iPSyVpAs4T0aVNJ5UGvXTd9LgpnXgo8xgiOhVMPlAgMun4eX2rAGu4eftf5gHkhcGor Vm6JMdnOBSeiCWltLiJWpD2hqlPLBHvYxP6hKSFRTan0LsgoAnN5TdKUe238zDWW0Wg== 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="lHx5X0e/"; 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 6F7AD606A33E; Wed, 4 Nov 2026 22:27:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=lHx5X0e/ Received: by smtp.kernel.org (Postfix) with ESMTPSA id 11A261F000C1; Wed, 4 Nov 2026 22:27:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793831249; bh=UfRY7YsDFKkhnZXiW7hRnenVMJIsQWD2zrLxOfHR5l4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=lHx5X0e/TOZ3eFBl9LkSGKAwuZNCgIo98vkSmt5qFos04oLDf6KpI95JL+6RCdgRm dBB3OauHwXykub3rK3dm6om+MI7stlz0vzVyXh8ZKO2NUIu2H6RIsony1RFqNO+iVt Kp1r+Tjg8TvwlU78dXORB7NZisbdy4/Wd81MTB+s= 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 6.18 0551/1005] LoongArch: KVM: Set vcpu->cpu before IN_GUEST_MODE is set Date: Wed, 4 Nov 2026 16:04:44 -0500 Message-ID: <20261104211059.326589109@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261104211043.516122098@linuxfoundation.org> References: <20261104211043.516122098@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-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 ee969e3957009..e0bd2ceeada4a 100644 --- a/arch/loongarch/kvm/vcpu.c +++ b/arch/loongarch/kvm/vcpu.c @@ -282,10 +282,10 @@ 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