From nobody Fri Sep 12 09:39:30 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 B41B9C001B0 for ; Thu, 10 Aug 2023 16:06:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236317AbjHJQGn (ORCPT ); Thu, 10 Aug 2023 12:06:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42988 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236313AbjHJQFk (ORCPT ); Thu, 10 Aug 2023 12:05:40 -0400 Received: from mail-pl1-x630.google.com (mail-pl1-x630.google.com [IPv6:2607:f8b0:4864:20::630]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 77A003C25; Thu, 10 Aug 2023 09:04:36 -0700 (PDT) Received: by mail-pl1-x630.google.com with SMTP id d9443c01a7336-1bbff6b2679so8285335ad.1; Thu, 10 Aug 2023 09:04:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1691683472; x=1692288272; 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=RCXffTJsDHcffmIPSgUKPLAjuz2B9B5upDilpJKvxXdse+2iU9qMd7XeUioEsL/IIx P49mC4Z7C2BWR4jgNtbX/rq5y7v1XSel5TXFTXUok3MrW+MmiJqkH3byV+llrk8HKq6U H7CoWlLozmvsDFj0PqumGlemwyQxY//zMB8iQjPFrgkXNtpuXt/bFiVYqYPuOJiI/06R vEy0jn5ymAGIXiBbExFCqoQ/R0nqeIBKzln7CVzEzdqsufVa2N2Zm+Ss86+gTrSekJi0 uz/CuciUxpLsNLDHf/pCvPxUVUSizB3w+dTFkwkyLWm/lFN799wXItMTWoCcb2WAnHyD gltQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691683472; x=1692288272; 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=JyK6ut6fatUSWJI4ZuMAM13Uvd8T695aNPaz5djXjN6G13QKoi2HVNbNGIbFRH6B69 J5HSQ2FK16yh3iwzJeh9bmvEg7fM1oK5+HnFkgiiteJ/38MgtogOw+xEEqXgt7ycTj9H lh1+4iUpavoj/bsyIUundvq0ks1OPHVzENApSWQE0GON6AlnKfb/MHWoEiPWIjvb0nu9 GBljHeYnOEpoeEcwGfQSgbMK0fkswZej51A4X6XjxLIySRBZ4aoBGEYfFawEY7FU9MMm +SKC7B23PCk1oedsosSDxffD7v3qi8bN44XH7ov8dClBzkgytJFYsPYOTTdMozBFWTCI QdQw== X-Gm-Message-State: AOJu0Yw6CrUdN22PjUPiuw37/9ieG3WwC7eMzUkzWplRqmSDiBuqGzE5 3jY50nTmFQajLdbXPFJiDwc= X-Google-Smtp-Source: AGHT+IGn228hh5T0wdxb8i4lo+ItXMDBJHIJVd/VmpTlE2seN4CkYOeLmKy8Ia5uIRzsczi4E/jOiQ== X-Received: by 2002:a17:902:b10f:b0:1bc:50f9:8f20 with SMTP id q15-20020a170902b10f00b001bc50f98f20mr2336492plr.23.1691683472544; Thu, 10 Aug 2023 09:04:32 -0700 (PDT) Received: from ubuntu-Virtual-Machine.corp.microsoft.com ([2001:4898:80e8:0:c620:2003:6c97:8057]) by smtp.gmail.com with ESMTPSA id r4-20020a1709028bc400b001b895a17429sm1948821plo.280.2023.08.10.09.04.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Aug 2023 09:04:31 -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 V5 6/8] clocksource: hyper-v: Mark hyperv tsc page unencrypted in sev-snp enlightened guest Date: Thu, 10 Aug 2023 12:04:09 -0400 Message-Id: <20230810160412.820246-7-ltykernel@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230810160412.820246-1-ltykernel@gmail.com> References: <20230810160412.820246-1-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