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[2620:137:e000::1:20]) by mx.google.com with ESMTP id u22-20020aa7d896000000b005230f1ff03esi1887781edq.275.2023.08.04.09.36.57; Fri, 04 Aug 2023 09:38:00 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20221208 header.b=Ys4LxoTj; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232098AbjHDPXa (ORCPT + 99 others); Fri, 4 Aug 2023 11:23:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56956 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232039AbjHDPXJ (ORCPT ); Fri, 4 Aug 2023 11:23:09 -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 4EADC49FD; Fri, 4 Aug 2023 08:23:08 -0700 (PDT) Received: by mail-pl1-x630.google.com with SMTP id d9443c01a7336-1b8ad356f03so15873355ad.1; Fri, 04 Aug 2023 08:23:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1691162588; x=1691767388; 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=Ys4LxoTjJLJNlf1KghdOXawDjuuvqnxI01dSB1N/OH8xutrxveIeQ2p/n31GTSVIV/ MwRtwaxer4ympeYbkdZ8VZCar3PRKMjoAQNOA6Vvbs2R7HPpQUnCs4GgcFNqSJw002B2 dlpuGab5pM/nJLY3EM0u5EBAXsB6qM7blUGMz3GAdpkrthcQ4jl6GH/L0KScRt7yhGiH aTSWnNFr6PSEe5DLGsSEO7sQNi3EH8fcyQ6JJ4eMke1BLrJbb46Sm5JtI24cv09LuA8P 2vBs5/nOnlPgPe2ZtaMzRTbDdZIoL5l7hzowfcpTWt69tkmSBfFgRC3DszqWnFU5Pv3m 0Rig== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691162588; x=1691767388; 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=ZxZxlxl5qnfFe/h6bwPLjnONSuP05vuiFFwM9IAjihORpUfxl/eeF6cJu3YvGjWYwh qtajRlmMfoFKjInLef+kTrZv4CokPiorukq6ocVAp5WuMhBdnqXGQS+g/AGxzDExY0GS WVp+MmaQNzzFEhJG7Wz0pqp4LCxEP4YW733E3d/RALsf+1/BM5pw3VKlUKhj+cHtNdq8 b67Qju3S2lOx4j8+bRZV7ouyytcvVJd5chHsKS1uZMAWAxhzsrt4iYthNebLJRkxHC62 hZrEeJCTqoaZFp0vmmmFuChH85R1kN+eFLo1b6XoxW7eChI192B2Kljw3hRSRz6hW+tT +fCg== X-Gm-Message-State: AOJu0YxHCIUWjO4tDqMmLJ43/gicABdSf6bDApQh6WjvuawJo2sAXCF3 kEUDr+Fd8EGziQLaa+jcVCo= X-Received: by 2002:a17:902:b482:b0:1bb:a941:d940 with SMTP id y2-20020a170902b48200b001bba941d940mr1957448plr.15.1691162587729; Fri, 04 Aug 2023 08:23:07 -0700 (PDT) Received: from ubuntu-Virtual-Machine.corp.microsoft.com ([2001:4898:80e8:f:a0bf:7946:90be:721b]) by smtp.gmail.com with ESMTPSA id s21-20020a170902989500b001aaf2e8b1eesm1891325plp.248.2023.08.04.08.23.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Aug 2023 08:23:07 -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 V4 6/9] clocksource: hyper-v: Mark hyperv tsc page unencrypted in sev-snp enlightened guest Date: Fri, 4 Aug 2023 11:22:50 -0400 Message-Id: <20230804152254.686317-7-ltykernel@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230804152254.686317-1-ltykernel@gmail.com> References: <20230804152254.686317-1-ltykernel@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1773317212132820204 X-GMAIL-MSGID: 1773317212132820204 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/hyperv_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); static struct ms_hyperv_tsc_page *tsc_page = &tsc_pg.page; static unsigned long tsc_pfn;