From patchwork Sat Oct 5 20:05:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 13823485 Received: from mail-pg1-f177.google.com (mail-pg1-f177.google.com [209.85.215.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9624B153838 for ; Sat, 5 Oct 2024 20:06:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.177 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728158772; cv=none; b=RN4qKmgv2EHs6pojsgr+Y5zeIFcUi3jU6tPaa7F2r0n9ngoNWNWQGPQtbqPTH3sjhkC5FXaUgfs8SV9IKEizBQrE1D56ej6mMxORC1/KB4vCEE24RdZdSIzZn4nA8MoJ6c7K0tOfG/MS4BTEwt6UWvPEHRqKkryj/jXpFpIEPdg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728158772; c=relaxed/simple; bh=tZoCwtIK/p1jJzOfgZpJrtMvDCOC/SNFglCoA1ddJgs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fUfewvidLjwJqpZejAn68ZUK08Zsd/NLGdxfYPYbuJuO1nj8ubYyDUBlEwZUoq8ZaBVc1NSsqYVAT102Y31XvWanUOOKSyis/D9zptSR8648Uob+5LPpkygxZ1MKudXvBu5aCdgbxHA02XerhIrzwUu7Vfr6/ikXRgitl7u2fmI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=eKC0fodX; arc=none smtp.client-ip=209.85.215.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="eKC0fodX" Received: by mail-pg1-f177.google.com with SMTP id 41be03b00d2f7-7e6d04f74faso2687676a12.1 for ; Sat, 05 Oct 2024 13:06:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1728158770; x=1728763570; darn=vger.kernel.org; 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=/wa2JC5GTiuZOa9FUt+c/E5R/4D7wBSs90VoPwelenc=; b=eKC0fodXNH0cWRel+oF0XjEEgKjmE7nAXFyQgEMYXCb3+2XK36hH75/KqGOIz3fcIk gOuj25NtwkAhH0FOPUmRoZYJvQ3ZRIuuxG6waD397L4ATR6a8aE4m3bemksf5AUnePAj iNtrw25k1ZUXxqpQjcnynIG8D8eOt5jIXmSY4enrzIY2ggWeJH2CQAPQxCWcVqTwGjM+ qhEroxJu1YfCi9DGBiiJXMhe8dPutUzp98SZy/28feX6l/I+FShyuUFAZjJ88zV92EP3 kOzLxmnKKQ/5jbq3x0rCOIEs8nqplQAJwD56gWJuw9t33pFqhm0+N3OMToGwBislPiop ++wA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728158770; x=1728763570; 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=/wa2JC5GTiuZOa9FUt+c/E5R/4D7wBSs90VoPwelenc=; b=jafYU5oIDpTlJsS4issUuKISu5D6CydQnpH877IOuoGkTf9NReltwhwkBzuyzPoLxe 1SNXDXlLf4jWk4BfBt9qfBp3n2HKJuP0oAIkGjBYmcl6wL6edITkLa5Pt7GJRDcJ4RN2 Igjc2E2VMEyzTbNa9IX3pzoDAl9DImkeuWhaUvrJdPuX9BjqWFK2eXMzuMimWg/VFRcR Da8xA4conL1O/+P9tihOyROlUiE9jP6aNzTRsRo/r0uxS+XfJm3dluQWWX/jyhHrbBac 1LZWjOUp/BVvcbMrJv0Z1uakHx2TkTAhYHzdAjx+brP1NvchtJTZFSbZRbrPPVsUtimG SCSA== X-Forwarded-Encrypted: i=1; AJvYcCUwQMB4S3Cjvw03q1mENbA8Kg4d0XTjn4fVhvSneUNdcnmkO2oWFIVppv5hrpn7AclmJgyZ/LYSM1/cJEs=@vger.kernel.org X-Gm-Message-State: AOJu0YwGpuE3bh+Xs8PtecOF88qMVF1i7nLkt7uIufc4RYtzyyLs8KSi MdZc6nwGH99TV345VnsPeb9+0rXmEiwOFhjZxa3pit2NS8Nq+IGFXZPIh9ssCgQ= X-Google-Smtp-Source: AGHT+IEu/yRGIXzgnnxtsNkCW1Gem8iXzS/ffba0hjtpfN6ZQ1VIoxbuDWZWql5a5WIxSKhWPrRs6g== X-Received: by 2002:a17:90b:3709:b0:2e0:7b03:1908 with SMTP id 98e67ed59e1d1-2e1b38c7582mr16486887a91.10.1728158770066; Sat, 05 Oct 2024 13:06:10 -0700 (PDT) Received: from stoup.. (174-21-81-121.tukw.qwest.net. [174.21.81.121]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-20c13931055sm16493405ad.139.2024.10.05.13.06.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 05 Oct 2024 13:06:09 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: deller@kernel.org, peter.maydell@linaro.org, alex.bennee@linaro.org, linux-parisc@vger.kernel.org, qemu-arm@nongnu.org Subject: [PATCH v2 09/21] target/hppa: Perform access rights before protection id check Date: Sat, 5 Oct 2024 13:05:48 -0700 Message-ID: <20241005200600.493604-10-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241005200600.493604-1-richard.henderson@linaro.org> References: <20241005200600.493604-1-richard.henderson@linaro.org> Precedence: bulk X-Mailing-List: linux-parisc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In Chapter 5, Interruptions, the group 3 exceptions lists "Data memory access rights trap" in priority order ahead of "Data memory protection ID trap". Swap these checks in hppa_get_physical_address. Signed-off-by: Richard Henderson --- target/hppa/mem_helper.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/target/hppa/mem_helper.c b/target/hppa/mem_helper.c index a386c80fa4..f027c494e2 100644 --- a/target/hppa/mem_helper.c +++ b/target/hppa/mem_helper.c @@ -267,6 +267,12 @@ int hppa_get_physical_address(CPUHPPAState *env, vaddr addr, int mmu_idx, goto egress; } + if (unlikely(!(prot & type))) { + /* Not allowed -- Inst/Data Memory Access Rights Fault. */ + ret = (type & PAGE_EXEC) ? EXCP_IMP : EXCP_DMAR; + goto egress; + } + /* access_id == 0 means public page and no check is performed */ if (ent->access_id && MMU_IDX_TO_P(mmu_idx)) { int access_prot = (hppa_is_pa20(env) @@ -281,12 +287,6 @@ int hppa_get_physical_address(CPUHPPAState *env, vaddr addr, int mmu_idx, prot &= access_prot; } - if (unlikely(!(prot & type))) { - /* Not allowed -- Inst/Data Memory Access Rights Fault. */ - ret = (type & PAGE_EXEC) ? EXCP_IMP : EXCP_DMAR; - goto egress; - } - /* * In priority order, check for conditions which raise faults. * Remove PROT bits that cover the condition we want to check,