From nobody Wed Dec 17 23:22:40 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 1A291C25B5E for ; Wed, 16 Aug 2023 16:00:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344539AbjHPP7m (ORCPT ); Wed, 16 Aug 2023 11:59:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57134 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344509AbjHPP7R (ORCPT ); Wed, 16 Aug 2023 11:59:17 -0400 Received: from mail-pl1-x635.google.com (mail-pl1-x635.google.com [IPv6:2607:f8b0:4864:20::635]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 84FFB2D48; Wed, 16 Aug 2023 08:59:02 -0700 (PDT) Received: by mail-pl1-x635.google.com with SMTP id d9443c01a7336-1bdc19b782aso32873365ad.0; Wed, 16 Aug 2023 08:59:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1692201542; x=1692806342; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=lxyPRx65GPTmM7WIGpMjts/akUWiTXqh+ZFAndUPdXI=; b=PC0/lR53+VCicJ9H0/SQ3Bei+7+HxUxknUVy7UJmPjgmjLSDquQ65V6tGIcPRaKQCO QDZb09dimioLQkIkBApGvGGvk3eZXiaAPVjBZwpII0VC74gluV0vg4+X2SJ94a80rc7G NjEW1utnzuowK+lcRO/310nYDeh3K0dVL2lpCz47eW0PjmFyEU2aiRfxxDFBVwiAFyoz RRDic5t6n7tqZCsAG/vU5bQZ7ebgA4Wega15/5HM5eNNurSLt22hucbNTpkkWSkKhxno N2d0Pou79KaxzT9OU6Zd3PhsnF81/cxtu+kNFwUUX1oeDruVtcFnA9Lj1EsZVyz/mojc bhWg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692201542; x=1692806342; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=lxyPRx65GPTmM7WIGpMjts/akUWiTXqh+ZFAndUPdXI=; b=B9HIhvw+WmElbvytRNYJsZXPyH9jhZy6NYm3T1PcwgxTspBNNfoln7kXSdzT+72b0z mfc5bzEK8f6A3MoEgYtFKTjyyJuajDQSr9XUcCDnkdVvk209rh/L7vP7G7W0b3+aR+ug t0Y9HzlMIoBJzoUszsx09IBEmfoNstvVRZ0zo0ZIHzQvfNCNbhmb56df5DokFnaUdTl1 IUF3yi+iea9IpdEBFWB51a5FNqn+fzxw6KEbfNK86aLA3LUPpbS4QXNaarv+85Nf/5hC xECT1dy9gWH9conzES0fH3uR+VGEZ+UvnzDgeTcKPOyPwv+6PTyy/IL2hZrHphxOQjgj Twtw== X-Gm-Message-State: AOJu0Ywbb5Kl07v1m5MIbEiIs0n4Fm0eFbYQa17iyGUU1sqSy27ZgPOn 3duF1szf8kntIMVe3a2Cz9c= X-Google-Smtp-Source: AGHT+IFyowF8kY/XG+zGsI3RvPoJeXwJ7mX+0CbWQJkqmr7Arxd7sKHrnFy+Y5qLuMR6bsgIZX76ZA== X-Received: by 2002:a17:902:d481:b0:1b8:a3a0:d9b3 with SMTP id c1-20020a170902d48100b001b8a3a0d9b3mr2107724plg.47.1692201541988; Wed, 16 Aug 2023 08:59:01 -0700 (PDT) Received: from ubuntu-Virtual-Machine.corp.microsoft.com ([2001:4898:80e8:0:e588:8d80:9ae5:5adc]) by smtp.gmail.com with ESMTPSA id h17-20020a170902f7d100b001bc930d4517sm13366973plw.42.2023.08.16.08.59.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Aug 2023 08:59:01 -0700 (PDT) From: Tianyu Lan To: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, daniel.lezcano@linaro.org, arnd@arndb.de, michael.h.kelley@microsoft.com Cc: Tianyu Lan , linux-arch@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, vkuznets@redhat.com, Michael Kelley Subject: [PATCH v6 6/8] clocksource: hyper-v: Mark hyperv tsc page unencrypted in sev-snp enlightened guest Date: Wed, 16 Aug 2023 11:58:47 -0400 Message-Id: <20230816155850.1216996-7-ltykernel@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230816155850.1216996-1-ltykernel@gmail.com> References: <20230816155850.1216996-1-ltykernel@gmail.com> 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" From: Tianyu Lan Hyper-V tsc page is shared with hypervisor and mark the page unencrypted in sev-snp enlightened guest when it's used. Reviewed-by: Michael Kelley Signed-off-by: Tianyu Lan Reviewed-by: Dexuan Cui --- drivers/clocksource/hyperv_timer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clocksource/hyperv_timer.c b/drivers/clocksource/hyper= v_timer.c index e56307a81f4d..8ff7cd4e20bb 100644 --- a/drivers/clocksource/hyperv_timer.c +++ b/drivers/clocksource/hyperv_timer.c @@ -390,7 +390,7 @@ static __always_inline u64 read_hv_clock_msr(void) static union { struct ms_hyperv_tsc_page page; u8 reserved[PAGE_SIZE]; -} tsc_pg __aligned(PAGE_SIZE); +} tsc_pg __bss_decrypted __aligned(PAGE_SIZE); =20 static struct ms_hyperv_tsc_page *tsc_page =3D &tsc_pg.page; static unsigned long tsc_pfn; --=20 2.25.1