From patchwork Wed Aug 5 17:56:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Zyngier X-Patchwork-Id: 11702269 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 823C4722 for ; Wed, 5 Aug 2020 18:42:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 65B1B233ED for ; Wed, 5 Aug 2020 18:42:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596652950; bh=6Ab/eUk00myUeLfnxSkmHWxeqqGmHlVIjtuoHXcMfZo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=2p90P+SfozLBn8ridzvUbB+1cPs7FoDkydyWTrro22+1ERHPkEZEYKFTmZ5/CseD4 m6l15SdnmNCrvTxhhnhYN1HsX/BHFd2QjkArwqsDppmKg3nxIY4HYTO9KQNt1SchjE YQ2U2WOheVX9pmlS0mASw11q1iivub3N6vszv6xo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728472AbgHESkj (ORCPT ); Wed, 5 Aug 2020 14:40:39 -0400 Received: from mail.kernel.org ([198.145.29.99]:35382 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729205AbgHES1n (ORCPT ); Wed, 5 Aug 2020 14:27:43 -0400 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6501522D2B; Wed, 5 Aug 2020 18:26:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596651990; bh=6Ab/eUk00myUeLfnxSkmHWxeqqGmHlVIjtuoHXcMfZo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Kth77fl88AoIcviPaPr5Rc3aWe9sa5LiTHvf9M0sF1R9seXCh3+06gGWzNam2Esj5 EUShTg1gBciGR3OSq5CfFgHDmGW65gDQTlXoETappgIYv+WwJuwqmCOCcA6AIcEaGI aOZ/NBzvlFBki+fsOcttj6701GHZ9tQLub0WAbqo= Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=why.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1k3Nfj-0004w9-0x; Wed, 05 Aug 2020 18:57:51 +0100 From: Marc Zyngier To: Paolo Bonzini Cc: Alexander Graf , Alexandru Elisei , Andrew Scull , Catalin Marinas , Christoffer Dall , David Brazdil , Eric Auger , Gavin Shan , James Morse , Mark Rutland , Peng Hao , Quentin Perret , Will Deacon , Julien Thierry , Suzuki K Poulose , linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, kernel-team@android.com Subject: [PATCH 32/56] arm64: Document SW reserved PTE/PMD bits in Stage-2 descriptors Date: Wed, 5 Aug 2020 18:56:36 +0100 Message-Id: <20200805175700.62775-33-maz@kernel.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200805175700.62775-1-maz@kernel.org> References: <20200805175700.62775-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: pbonzini@redhat.com, graf@amazon.com, alexandru.elisei@arm.com, ascull@google.com, catalin.marinas@arm.com, christoffer.dall@arm.com, dbrazdil@google.com, eric.auger@redhat.com, gshan@redhat.com, james.morse@arm.com, mark.rutland@arm.com, richard.peng@oppo.com, qperret@google.com, will@kernel.org, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, kernel-team@android.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Advertise bits [58:55] as reserved for SW in the S2 descriptors. Reviewed-by: Andrew Scull Acked-by: Catalin Marinas Signed-off-by: Marc Zyngier --- arch/arm64/include/asm/pgtable-hwdef.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h index 9c91a8f93a0e..de0b603955f4 100644 --- a/arch/arm64/include/asm/pgtable-hwdef.h +++ b/arch/arm64/include/asm/pgtable-hwdef.h @@ -178,10 +178,12 @@ #define PTE_S2_RDONLY (_AT(pteval_t, 1) << 6) /* HAP[2:1] */ #define PTE_S2_RDWR (_AT(pteval_t, 3) << 6) /* HAP[2:1] */ #define PTE_S2_XN (_AT(pteval_t, 2) << 53) /* XN[1:0] */ +#define PTE_S2_SW_RESVD (_AT(pteval_t, 15) << 55) /* Reserved for SW */ #define PMD_S2_RDONLY (_AT(pmdval_t, 1) << 6) /* HAP[2:1] */ #define PMD_S2_RDWR (_AT(pmdval_t, 3) << 6) /* HAP[2:1] */ #define PMD_S2_XN (_AT(pmdval_t, 2) << 53) /* XN[1:0] */ +#define PMD_S2_SW_RESVD (_AT(pmdval_t, 15) << 55) /* Reserved for SW */ #define PUD_S2_RDONLY (_AT(pudval_t, 1) << 6) /* HAP[2:1] */ #define PUD_S2_RDWR (_AT(pudval_t, 3) << 6) /* HAP[2:1] */