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 X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 386BAC433B4 for ; Tue, 18 May 2021 20:13:57 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id ACA1C6109F for ; Tue, 18 May 2021 20:13:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ACA1C6109F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:59240 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lj66F-0003gq-SG for qemu-devel@archiver.kernel.org; Tue, 18 May 2021 16:13:55 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42324) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lj64H-0008Mo-5p for qemu-devel@nongnu.org; Tue, 18 May 2021 16:11:53 -0400 Received: from mail-oi1-x235.google.com ([2607:f8b0:4864:20::235]:45709) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lj64E-00060d-8w for qemu-devel@nongnu.org; Tue, 18 May 2021 16:11:52 -0400 Received: by mail-oi1-x235.google.com with SMTP id w127so7139950oig.12 for ; Tue, 18 May 2021 13:11:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=BKH8RkMUVg0BQHkEeqxp4YAUN+HZAVJ9V/XbNB3bw2s=; b=bKZiMZqHOp5rBo5K2mqCuLd4Yh/JrX/x30gTWb/0Rw++wtg7q5MaE+Qv6zOMSC38TQ vdqqdAg7/R7PC1MX5FNbmsoXSfAxl4hSeGviaPPR3ZjyLIes6+3kZqMxglY98/v1gR19 /Q9ANJaSriIj4lWD+K2rdJNAXmt570ZVdkwOh77ZeHUnDFIto4HeSxHlOFSkPHoAN2n4 WYVgo3S3R8tRodRQL8H0CT0relzorDcuYT+TfLiWSFStKgwewsy3NR6UctSG/BnRisaT ++PLhTawb7Q9YGA+kOfwVkaB34gLLPvrYvoFMbUhwU97qwMK8RIwXJUyq+fZj2YQ21pw Wvhg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=BKH8RkMUVg0BQHkEeqxp4YAUN+HZAVJ9V/XbNB3bw2s=; b=RIRbIIc+4u0pPjiHk9dQFIyZKySTYfM8Z2/U3MxEWu2DDTjHZWQqpg98nXyMKOmi4n GvjWHcAdTcrAd3PYYLOiNA0siAlGRLW5uqvefveUUapddfPwHIoIBxm6niwde15/Wy72 rChdKFCpn80k/E9uDUdilmQOfqEDMAg9HIkHWfuppahfd/ojmKEADSNzT5Y99oCfRKJb d0EwKuBKiUJXamFoXBILjanlyIFGTw8+6b0qdVRV2swi/JbCRPJCtWOBiApepGRrPUyC M73g4JpKG93IMc4anNnq1UAWkZ1YOhhGaqyIbitbATG6YD7enseIC63HBo1LwtDCrLMG RhWw== X-Gm-Message-State: AOAM532dahPQ/26J8HNfjRAN9R3yix0Imv4PGT193ucTsRAPDzR+nCRL gsxHO+EKyNFCzfrPhqtxLosixLPEJm9yJTPu X-Google-Smtp-Source: ABdhPJy06pY8g05SdXM9TSR6Lu1CAVcyU+hHM54Umc55avs9AWx47mtBaSfwBsXwVE2ylxF5PCddbA== X-Received: by 2002:aca:dd89:: with SMTP id u131mr4774845oig.145.1621368709178; Tue, 18 May 2021 13:11:49 -0700 (PDT) Received: from localhost.localdomain ([45.235.253.15]) by smtp.gmail.com with ESMTPSA id u27sm3953204oof.38.2021.05.18.13.11.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 May 2021 13:11:48 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH 01/24] target/ppc: Introduce prot_for_access_type Date: Tue, 18 May 2021 15:11:23 -0500 Message-Id: <20210518201146.794854-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210518201146.794854-1-richard.henderson@linaro.org> References: <20210518201146.794854-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::235; envelope-from=richard.henderson@linaro.org; helo=mail-oi1-x235.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: bruno.larsen@eldorado.org.br, qemu-ppc@nongnu.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Use this in the three places we currently have a local array indexed by rwx (which happens to have the same values). The types will match up correctly with additional changes. Signed-off-by: Richard Henderson --- target/ppc/internal.h | 19 +++++++++++++++++++ target/ppc/mmu-hash32.c | 8 +++++--- target/ppc/mmu-hash64.c | 10 ++++++---- target/ppc/mmu-radix64.c | 6 ++++-- 4 files changed, 34 insertions(+), 9 deletions(-) diff --git a/target/ppc/internal.h b/target/ppc/internal.h index 184ba6d6b3..2b4b06eb76 100644 --- a/target/ppc/internal.h +++ b/target/ppc/internal.h @@ -228,4 +228,23 @@ void destroy_ppc_opcodes(PowerPCCPU *cpu); void ppc_gdb_init(CPUState *cs, PowerPCCPUClass *ppc); gchar *ppc_gdb_arch_name(CPUState *cs); +/** + * prot_for_access_type: + * @access_type: Access type + * + * Return the protection bit required for the given access type. + */ +static inline int prot_for_access_type(MMUAccessType access_type) +{ + switch (access_type) { + case MMU_INST_FETCH: + return PAGE_EXEC; + case MMU_DATA_LOAD: + return PAGE_READ; + case MMU_DATA_STORE: + return PAGE_WRITE; + } + g_assert_not_reached(); +} + #endif /* PPC_INTERNAL_H */ diff --git a/target/ppc/mmu-hash32.c b/target/ppc/mmu-hash32.c index 178cf090b7..233a66658e 100644 --- a/target/ppc/mmu-hash32.c +++ b/target/ppc/mmu-hash32.c @@ -24,6 +24,7 @@ #include "exec/helper-proto.h" #include "sysemu/kvm.h" #include "kvm_ppc.h" +#include "internal.h" #include "mmu-hash32.h" #include "exec/log.h" @@ -421,10 +422,11 @@ int ppc_hash32_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx, hwaddr pte_offset; ppc_hash_pte32_t pte; int prot; - const int need_prot[] = {PAGE_READ, PAGE_WRITE, PAGE_EXEC}; + int need_prot; hwaddr raddr; assert((rwx == 0) || (rwx == 1) || (rwx == 2)); + need_prot = prot_for_access_type(rwx); /* 1. Handle real mode accesses */ if (((rwx == 2) && (msr_ir == 0)) || ((rwx != 2) && (msr_dr == 0))) { @@ -440,7 +442,7 @@ int ppc_hash32_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx, if (env->nb_BATs != 0) { raddr = ppc_hash32_bat_lookup(cpu, eaddr, rwx, &prot); if (raddr != -1) { - if (need_prot[rwx] & ~prot) { + if (need_prot & ~prot) { if (rwx == 2) { cs->exception_index = POWERPC_EXCP_ISI; env->error_code = 0x08000000; @@ -513,7 +515,7 @@ int ppc_hash32_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx, prot = ppc_hash32_pte_prot(cpu, sr, pte); - if (need_prot[rwx] & ~prot) { + if (need_prot & ~prot) { /* Access right violation */ qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n"); if (rwx == 2) { diff --git a/target/ppc/mmu-hash64.c b/target/ppc/mmu-hash64.c index c4a4bc7cd2..d5b70ddc9c 100644 --- a/target/ppc/mmu-hash64.c +++ b/target/ppc/mmu-hash64.c @@ -29,6 +29,7 @@ #include "mmu-hash64.h" #include "exec/log.h" #include "hw/hw.h" +#include "internal.h" #include "mmu-book3s-v3.h" #include "helper_regs.h" @@ -876,7 +877,7 @@ int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, hwaddr ptex; ppc_hash_pte64_t pte; int exec_prot, pp_prot, amr_prot, prot; - const int need_prot[] = {PAGE_READ, PAGE_WRITE, PAGE_EXEC}; + int need_prot; hwaddr raddr; assert((rwx == 0) || (rwx == 1) || (rwx == 2)); @@ -996,7 +997,8 @@ skip_slb_search: amr_prot = ppc_hash64_amr_prot(cpu, pte); prot = exec_prot & pp_prot & amr_prot; - if ((need_prot[rwx] & ~prot) != 0) { + need_prot = prot_for_access_type(rwx); + if (need_prot & ~prot) { /* Access right violation */ qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n"); if (rwx == 2) { @@ -1012,13 +1014,13 @@ skip_slb_search: ppc_hash64_set_isi(cs, srr1); } else { int dsisr = 0; - if (need_prot[rwx] & ~pp_prot) { + if (need_prot & ~pp_prot) { dsisr |= DSISR_PROTFAULT; } if (rwx == 1) { dsisr |= DSISR_ISSTORE; } - if (need_prot[rwx] & ~amr_prot) { + if (need_prot & ~amr_prot) { dsisr |= DSISR_AMR; } ppc_hash64_set_dsi(cs, eaddr, dsisr); diff --git a/target/ppc/mmu-radix64.c b/target/ppc/mmu-radix64.c index 30fcfcf11f..646b9afb7b 100644 --- a/target/ppc/mmu-radix64.c +++ b/target/ppc/mmu-radix64.c @@ -25,6 +25,7 @@ #include "sysemu/kvm.h" #include "kvm_ppc.h" #include "exec/log.h" +#include "internal.h" #include "mmu-radix64.h" #include "mmu-book3s-v3.h" @@ -135,7 +136,7 @@ static bool ppc_radix64_check_prot(PowerPCCPU *cpu, int rwx, uint64_t pte, bool partition_scoped) { CPUPPCState *env = &cpu->env; - const int need_prot[] = { PAGE_READ, PAGE_WRITE, PAGE_EXEC }; + int need_prot; /* Check Page Attributes (pte58:59) */ if (((pte & R_PTE_ATT) == R_PTE_ATT_NI_IO) && (rwx == 2)) { @@ -158,7 +159,8 @@ static bool ppc_radix64_check_prot(PowerPCCPU *cpu, int rwx, uint64_t pte, } /* Check if requested access type is allowed */ - if (need_prot[rwx] & ~(*prot)) { /* Page Protected for that Access */ + need_prot = prot_for_access_type(rwx); + if (need_prot & ~*prot) { /* Page Protected for that Access */ *fault_cause |= DSISR_PROTFAULT; return true; } -- 2.25.1