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[2603:800c:3202:ffa7:dcaa:9e71:a2b2:2604]) by smtp.gmail.com with ESMTPSA id t205sm1305005pfc.32.2021.07.28.17.47.09 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Jul 2021 17:47:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=69IismDG8mKiGlccU40BbniZyUFG7yiBSbUwVB87kXw=; b=VdExl0wPGYC2Mj+R6XoZ30J7g7RGsT77NkfNEH3tG1YvlRcnNbWpp5FqnDjoTPG0Cu wCTLRNk9ZrRMVEeBQXz1vYBBCg0C2iQa+jhcy87reac8249MhdcVry4wBf9AbxhjL267 Xw0jBp1G8LecOk8mGvHFfJAtsdF/QyQr3XEThMcw4XRMkZxQjaoKMbmpQNOt286GTeWS Nunxge2w1/Twz58k66WGQxSQwYGHyfVhKumhOdcBDl5M7rV3M54wMYFGVSY4nr6VJr3t HhUowZlD5hCoA0DwpWnDNTenpAyK33zitOKq6X7ZUleJpLJMyLmJlF4Z/BbI+VNJCK69 pljg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=69IismDG8mKiGlccU40BbniZyUFG7yiBSbUwVB87kXw=; b=NGz8R/mt+bL/8bCNiSE5XSymeVddJPr/nK4ll+nS/R++bl8xXA65B2oRnO675h4FBu z9dyvZh7HXOP5NNhpIW2LTic2kRiYktfVcQYbyQ8cl5PwaqUQq6yS1WSjOPFpDTo5F+Y SEHJIArb6nubaDjrLa1bNU0JkpBSlB9vSKEfbFVhxnJYxFcSOZUIhqr7UoyGi8j3vFUw PRO8rpsAgZ08oT40u+ftWxg6FwK6CINJ2sfJfK6axVzXG606SEGWyIF9bLyFarKbi9RR Fqs2WfZVvfU2mINVDXiFAOXlVXqRcl9tzsNmf7Wh7bxRSkYhiQ08xsv2/OSYTkbZimPc Zzpg== X-Gm-Message-State: AOAM5326/TXNUoMcir9Bo2GUkcpuAbv/ZrIGfn5+YSQVKQFbqJRs7fOr r10/Seuh/C/Jcnz7xMLk5BWPVO57Igs3Ag== X-Google-Smtp-Source: ABdhPJxOm2yYQbaMbVpU3ANf72GW1hZucgJrkGWKh14icuR5Joul89asEScURsdgyLGHREWn18GF5A== X-Received: by 2002:aa7:8e51:0:b029:332:920f:1430 with SMTP id d17-20020aa78e510000b0290332920f1430mr2483527pfr.1.1627519630677; Wed, 28 Jul 2021 17:47:10 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH for-6.2 17/43] accel/tcg: Report unaligned atomics for user-only Date: Wed, 28 Jul 2021 14:46:21 -1000 Message-Id: <20210729004647.282017-18-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210729004647.282017-1-richard.henderson@linaro.org> References: <20210729004647.282017-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::1033; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x1033.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=ham 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1627520944868100004 Content-Type: text/plain; charset="utf-8" Use the newly exposed do_unaligned_access hook from atomic_mmu_lookup, which has access to complete alignment info from the TCGMemOpIdx arg. Signed-off-by: Richard Henderson --- accel/tcg/user-exec.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c index 90d1a2d327..dd77e90789 100644 --- a/accel/tcg/user-exec.c +++ b/accel/tcg/user-exec.c @@ -852,6 +852,16 @@ int cpu_signal_handler(int host_signum, void *pinfo, =20 /* The softmmu versions of these helpers are in cputlb.c. */ =20 +static void cpu_unaligned_access(CPUState *cpu, vaddr addr, + MMUAccessType access_type, + int mmu_idx, uintptr_t ra) +{ + CPUClass *cc =3D CPU_GET_CLASS(cpu); + + cc->tcg_ops->do_unaligned_access(cpu, addr, access_type, mmu_idx, ra); + g_assert_not_reached(); +} + uint32_t cpu_ldub_data(CPUArchState *env, abi_ptr ptr) { uint32_t ret; @@ -1230,11 +1240,22 @@ static void *atomic_mmu_lookup(CPUArchState *env, t= arget_ulong addr, TCGMemOpIdx oi, int size, int prot, uintptr_t retaddr) { + MemOp mop =3D get_memop(oi); + int a_bits =3D get_alignment_bits(mop); + void *ret; + + /* Enforce guest required alignment. */ + if (unlikely(addr & ((1 << a_bits) - 1))) { + MMUAccessType t =3D prot =3D=3D PAGE_READ ? MMU_DATA_LOAD : MMU_DA= TA_STORE; + cpu_unaligned_access(env_cpu(env), addr, t, get_mmuidx(oi), retadd= r); + } + /* Enforce qemu required alignment. */ if (unlikely(addr & (size - 1))) { cpu_loop_exit_atomic(env_cpu(env), retaddr); } - void *ret =3D g2h(env_cpu(env), addr); + + ret =3D g2h(env_cpu(env), addr); set_helper_retaddr(retaddr); return ret; } --=20 2.25.1