From nobody Sun Sep 7 13:32:25 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 8BEF1EB64DA for ; Tue, 18 Jul 2023 03:24:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231179AbjGRDX6 (ORCPT ); Mon, 17 Jul 2023 23:23:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32916 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231156AbjGRDXa (ORCPT ); Mon, 17 Jul 2023 23:23:30 -0400 Received: from mail-ot1-x32a.google.com (mail-ot1-x32a.google.com [IPv6:2607:f8b0:4864:20::32a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5BF9E10F3; Mon, 17 Jul 2023 20:23:19 -0700 (PDT) Received: by mail-ot1-x32a.google.com with SMTP id 46e09a7af769-6b91ad1f9c1so3467040a34.3; Mon, 17 Jul 2023 20:23:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1689650598; x=1692242598; 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=Z9ih0aA/PzLKRelAHQmbTO80qK68YQO4IevqyDH0xG02u8MrrOrsvshZKQeV0bfe+J UYc4pemypZweDyZngoa8pcj2wriAWBzCJbJcEi1O9+UYZolqFz3hmu0RWRNpy/7gBjpC oJRazKaJ/RoJwllA01phZbgTbLaQ77BQOkl/q21B6gklmc4kpzqfJiHw+Amvy//ewZgZ /+v66iPHoPjyhLLF16YfSTuQ1Mtf6mVsVquwleWz0+E5C/IAFF276MPcPnpTMEPLPQGx llkuQfYaNk3eZkAr/4X47GWex904s6gtfGqpc5eqKdmivaTkyT0f7XlqnceMJKT1j7ym +mwA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689650598; x=1692242598; 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=cZmRmmsxWIFd5yDxoVSCu1SYuABtYD6aZF7jFXSMH1z7bukA/FUgCWOwPFhLmy4IT4 9SIEcK1M3880LVmoa3nL4L0weMO3oXX/p5sccPoBkBR/z9fL6L82jXCxQ52koZogjOId /fbBExiA6PN3RsgathqWKFYcAezpkxHjq7MrAlb4Xya5PTsJNeTwboO86lclJfVgNwf2 gSEMcmcjXdyQqmBnYP18mWAEAnovnl/VLCnbFbqJYaWo1isRisvuJFYD4gIsWwpDlw6j A9dyN6w82p6vyLmKWN9FDCK6OExjI8vu72CSNtHCDH9W0Krx2tsks+bg0Bvk588AvrDt G7yA== X-Gm-Message-State: ABy/qLZjTJRn1Nbt7EkLqK7tnd44k9Pg0bqsfatkoY9D5nNIFVtH2eC3 8oZoRX/YaO04bIlIeG0CKkA= X-Google-Smtp-Source: APBJJlEkBpU3kWnFZvo6tCz8OhHgGE1n55LOPGpaijnqqDKDs4fCGQ+Zd9yQcYYwdzHxHKuOKYvs2w== X-Received: by 2002:a05:6808:148d:b0:398:34da:daad with SMTP id e13-20020a056808148d00b0039834dadaadmr15016242oiw.51.1689650598402; Mon, 17 Jul 2023 20:23:18 -0700 (PDT) Received: from ubuntu-Virtual-Machine.corp.microsoft.com ([2001:4898:80e8:37:c5e9:2003:6c97:8057]) by smtp.gmail.com with ESMTPSA id s92-20020a17090a2f6500b00263f41a655esm504040pjd.43.2023.07.17.20.23.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Jul 2023 20:23:18 -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 V3 6/9] clocksource: hyper-v: Mark hyperv tsc page unencrypted in sev-snp enlightened guest Date: Mon, 17 Jul 2023 23:23:00 -0400 Message-Id: <20230718032304.136888-7-ltykernel@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230718032304.136888-1-ltykernel@gmail.com> References: <20230718032304.136888-1-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 --- 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