From nobody Wed Feb 11 06:53:03 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 DF8A6C761A6 for ; Tue, 4 Apr 2023 11:36:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234483AbjDDLgh (ORCPT ); Tue, 4 Apr 2023 07:36:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38362 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234159AbjDDLgd (ORCPT ); Tue, 4 Apr 2023 07:36:33 -0400 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 383A3420E; Tue, 4 Apr 2023 04:35:58 -0700 (PDT) Received: from jinankjain-dranzer.zrrkmle5drku1h0apvxbr2u2ee.ix.internal.cloudapp.net (unknown [20.188.121.5]) by linux.microsoft.com (Postfix) with ESMTPSA id C077B209A868; Tue, 4 Apr 2023 04:35:48 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com C077B209A868 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1680608151; bh=Xb9yuM7R3oQ9NGgUVXpfb5wLOmXOn+CR7TrZ/4l7qqo=; h=From:To:Cc:Subject:Date:From; b=rvQv8WqiXyc1xM/K7HQGFRvxtzOHIyOVnKmRSnqnIOxAKKv6T29e8EON04+yt5ZaF 3N62HcinnlpAAR5QpC+f4/4OrNNEI9EY3DV+B5eHHff8BmMmkKVevFiynlQwTwbojB SgXazHdLuIXX+CG0FCK6LPvFcZys+/7LgXU4CPl0= From: Jinank Jain To: jinankjain@microsoft.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, lpieralisi@kernel.org, kw@linux.com, robh@kernel.org, bhelgaas@google.com Cc: linux-hyperv@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, nunodasneves@linux.microsoft.com Subject: [PATCH] PCI: hv: Use nested hypercall for retargeting interrupts Date: Tue, 4 Apr 2023 11:35:46 +0000 Message-Id: <20230404113546.856813-1-jinankjain@linux.microsoft.com> X-Mailer: git-send-email 2.34.1 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" In case of nested MSHV, retargeting interrupt hypercall should be sent to L0 hypervisor instead of L1 hypervisor. Signed-off-by: Jinank Jain Reviewed-by: Nuno Das Neves --- drivers/pci/controller/pci-hyperv.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/p= ci-hyperv.c index f33370b75628..2123f632ecf7 100644 --- a/drivers/pci/controller/pci-hyperv.c +++ b/drivers/pci/controller/pci-hyperv.c @@ -704,8 +704,14 @@ static void hv_arch_irq_unmask(struct irq_data *data) } } =20 - res =3D hv_do_hypercall(HVCALL_RETARGET_INTERRUPT | (var_size << 17), - params, NULL); + if (hv_nested) + res =3D hv_do_nested_hypercall(HVCALL_RETARGET_INTERRUPT | + (var_size << 17), + params, NULL); + else + res =3D hv_do_hypercall(HVCALL_RETARGET_INTERRUPT | + (var_size << 17), + params, NULL); =20 exit_unlock: spin_unlock_irqrestore(&hbus->retarget_msi_interrupt_lock, flags); --=20 2.34.1