From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B9042C54EBE for ; Thu, 12 Jan 2023 20:03:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=tDDVNZ+Ht/nZPH+ntfxULbgE/BVaGZf6cuP/i3trRfw=; b=0Juqz4iP/RW5XQ RboZW2jzWyXIdJPyG+4SEyAnuogEZ8aIOeICFdRhSrAg89wmBxy+g35/709tTU/8Tt9gfu5zZu5fO elIdsErXxg1v2VE2maEhtiANaSb5ryipxY+hu3eA7FbLxl82utk0KElncM/bke6jSAMMwS9KdjwDf hIqwABa5AaHF+CTExBuszuB9+T/Pmg8rMKB60zxVKZcLbXk82XzCDYBtHW5ctRu99fdDNQ5HnASTf /7CwvOkfM7qV1CYLxyoqy3tiJ3NF2Hlt1S+KuToeIVCzSkckxJ0brl/P3GG+NpvcT9XoTy3v7YODJ k3jZ8VN6SbFbC1ncmBWA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pG3mN-00GjLE-Bs; Thu, 12 Jan 2023 20:02:28 +0000 Received: from ams.source.kernel.org ([2604:1380:4601:e00::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pG3A2-00GS0m-8U for linux-arm-kernel@lists.infradead.org; Thu, 12 Jan 2023 19:22:51 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id EFAB0B82018; Thu, 12 Jan 2023 19:22:48 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9F993C433EF; Thu, 12 Jan 2023 19:22:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1673551367; bh=JIkhyGIbZT5TNlBcgBvkJJRJMM2Gk2VMCg15Kh+AnmA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=flEZmxwc7ikXsSEvLxjSpzuuf1Ca0CD+K9G4korGsnyNzGNYP/8AGL9f0DGnF+jGT UGbHisjvWnDJmoQ086nWAGtNaBHrrRbXwmXGOFpTOMaAyBH/xDlvFr9MYbV2sTP7lO aONXIg4PNKXgNkwU9ViMKnZHjv+mDfmQV5GE2e3keHhfb6K6ZT+DGRHCJy0K0e4OkG +Ads/oTr45npMwfhw/dJvMBnT4t5Zc3rROQ5pP9V0PIpeGZj9sdjRVp8Zwz0u53lFr fi+rmAxi/SldS3yUjrzeAcjWOR3OKVuYIQsRmRLyJZU8k0SQ4I0Bh/uc1VIffKGkPw K8waCn9Ho+0rA== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1pG376-001IWu-TO; Thu, 12 Jan 2023 19:19:51 +0000 From: Marc Zyngier To: kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Alexandru Elisei , Andre Przywara , Chase Conklin , Christoffer Dall , Ganapatrao Kulkarni , Jintack Lim , Russell King , James Morse , Suzuki K Poulose , Oliver Upton , Zenghui Yu Subject: [PATCH v7 33/68] KVM: arm64: nv: Hide RAS from nested guests Date: Thu, 12 Jan 2023 19:18:52 +0000 Message-Id: <20230112191927.1814989-34-maz@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230112191927.1814989-1-maz@kernel.org> References: <20230112191927.1814989-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, alexandru.elisei@arm.com, andre.przywara@arm.com, chase.conklin@arm.com, christoffer.dall@arm.com, gankulkarni@os.amperecomputing.com, jintack@cs.columbia.edu, rmk+kernel@armlinux.org.uk, james.morse@arm.com, suzuki.poulose@arm.com, oliver.upton@linux.dev, yuzenghui@huawei.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230112_112250_490979_C36615B9 X-CRM114-Status: GOOD ( 12.09 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org We don't want to expose complicated features to guests until we have a good grasp on the basic CPU emulation. So let's pretend that RAS, doesn't exist in a nested guest. We already hide the feature bits, let's now make sure VDISR_EL1 will UNDEF. Signed-off-by: Marc Zyngier --- arch/arm64/kvm/sys_regs.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index b1dc62dc894d..23c457cbccda 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -2303,6 +2303,7 @@ static const struct sys_reg_desc sys_reg_descs[] = { EL2_REG(VBAR_EL2, access_rw, reset_val, 0), EL2_REG(RVBAR_EL2, access_rw, reset_val, 0), { SYS_DESC(SYS_RMR_EL2), trap_undef }, + { SYS_DESC(SYS_VDISR_EL2), trap_undef }, EL2_REG(CONTEXTIDR_EL2, access_rw, reset_val, 0), EL2_REG(TPIDR_EL2, access_rw, reset_val, 0), -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel