From nobody Wed Sep 17 11:46:38 2025 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 CB42EC4332F for ; Mon, 19 Dec 2022 22:07:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232827AbiLSWHV (ORCPT ); Mon, 19 Dec 2022 17:07:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60964 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232956AbiLSWGo (ORCPT ); Mon, 19 Dec 2022 17:06:44 -0500 Received: from mail-pl1-x64a.google.com (mail-pl1-x64a.google.com [IPv6:2607:f8b0:4864:20::64a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E1BA8167D9 for ; Mon, 19 Dec 2022 14:04:26 -0800 (PST) Received: by mail-pl1-x64a.google.com with SMTP id jc4-20020a17090325c400b00189ceee4049so7738689plb.3 for ; Mon, 19 Dec 2022 14:04:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:mime-version:date:reply-to:from:to:cc :subject:date:message-id:reply-to; bh=IcOxVrMFtonV2JcJvLKuNirvT3tsAql2W8+eBXYCUW8=; b=Cb+dorP/Ez/xVGt+7se+4/cx8/UREubLq3yumt/Cida8VPKvOw0A/2hH+YtqzBx+y+ +7y38mr3rU43VhaV+knSDQ5bsxNbAxUFeja9rEODMrz/c0zMuEljFFAdOkiivDiHksXh Euuh8mMWH2So1mWPnZnDtMdBVYYtw3IADWFmeGHVoSUYIxfmJ2daBghBNOmA8XDduEnO GCJ79ha6409HSSzYSaMwWGcAbHOqbe9LuSH/jC23QKtgq0PhaNUkPPWXU5okq7hg0R3V dEpERvPZcHBhHpDiwunuWjfgpDt2uTVr8wCNIvqpIcV3P6DH9XSo9qtbQPTTQuQSdDzZ P9lg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:mime-version:date:reply-to :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=IcOxVrMFtonV2JcJvLKuNirvT3tsAql2W8+eBXYCUW8=; b=34WrgsmClDIgGBYFZcRsAweGp63mfLSRgPifYuycGDwT1NWmLrGeOt6KzqnMdiz8ci VYQXeF4aDi0nYyn7pBgfWbH186ItTWxPB9gm3E4a0ZT8d49m39vE7QE7L7NHU0miHsqA k0ujv1gEWm7jurof+L4X+PKYEOLbOtHumBAWWjPHHquSHh4DsbG6vFvPu+1f9RhA45YD i615l8g3Qs9/nw9s3hk0ZKlTMc0kDfJXUNEkSyTCCHpr2v+uzjhICvxAOpFJ1iw+hVG/ /i5BXWJdagPF67P/PU1B+qR2RvXrEr47LDF2nBc6SEHatnosVF4wJ05y6dmHSu7eVy8f 2Bbw== X-Gm-Message-State: AFqh2kpXiXJpQwnePKS4mzZ3CqNH9gWRE8pJqhJQxkAZPwup6ytpOOqC WfjtsAdYNpU619vlH4qpgYfIFLsqPiY= X-Google-Smtp-Source: AMrXdXte8mRIyw/ZPDbnFxHME9VBMGtfTslaf8S1qgynZruPms70MgakdhbKwiWxLl1Ahh/ff797KQrqfSc= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a17:90a:d318:b0:220:1f03:129b with SMTP id p24-20020a17090ad31800b002201f03129bmr294532pju.0.1671487458819; Mon, 19 Dec 2022 14:04:18 -0800 (PST) Reply-To: Sean Christopherson Date: Mon, 19 Dec 2022 22:04:16 +0000 Mime-Version: 1.0 X-Mailer: git-send-email 2.39.0.314.g84b9a713c41-goog Message-ID: <20221219220416.395329-1-seanjc@google.com> Subject: [PATCH] KVM: selftests: Zero out valid_bank_mask for "all" case in Hyper-V IPI test From: Sean Christopherson To: Paolo Bonzini Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Vitaly Kuznetsov , Sean Christopherson Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Zero out the valid_bank_mask when using the fast variant of HVCALL_SEND_IPI_EX to send IPIs to all vCPUs. KVM requires the "var_cnt" and "valid_bank_mask" inputs to be consistent even when targeting all vCPUs. See commit bd1ba5732bb9 ("KVM: x86: Get the number of Hyper-V sparse banks from the VARHEAD field"). Fixes: 998489245d84 ("KVM: selftests: Hyper-V PV IPI selftest") Cc: Vitaly Kuznetsov Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/x86_64/hyperv_ipi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_ipi.c b/tools/testin= g/selftests/kvm/x86_64/hyperv_ipi.c index 8b791eac7d5a..0cbb0e646ef8 100644 --- a/tools/testing/selftests/kvm/x86_64/hyperv_ipi.c +++ b/tools/testing/selftests/kvm/x86_64/hyperv_ipi.c @@ -193,8 +193,9 @@ static void sender_guest_code(void *hcall_page, vm_vadd= r_t pgs_gpa) GUEST_SYNC(stage++); /* * 'XMM Fast' HvCallSendSyntheticClusterIpiEx to HV_GENERIC_SET_ALL. - * Nothing to write anything to XMM regs. */ + ipi_ex->vp_set.valid_bank_mask =3D 0; + hyperv_write_xmm_input(&ipi_ex->vp_set.valid_bank_mask, 2); hyperv_hypercall(HVCALL_SEND_IPI_EX | HV_HYPERCALL_FAST_BIT, IPI_VECTOR, HV_GENERIC_SET_ALL); nop_loop(); base-commit: 9d75a3251adfbcf444681474511b58042a364863 --=20 2.39.0.314.g84b9a713c41-goog