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([71.212.157.132]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-77e5fe6de75sm10583861b3a.19.2025.09.22.11.49.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Sep 2025 11:49:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1758566972; x=1759171772; darn=nongnu.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=usu7YBpSCdSYku4HM9JrcfIZ8CuetQgTTrUpbI5sQ3I=; b=IKTx84AMUs0JouFXSYG0rhGgtmzF77MBB603x5QcLkjCYqepetsfxV+PXA12p514H+ FxZQ2FkCe5xjTQ6QRm4KKs5zbSIjVQE/OXJpjJ5mjo9/vgHEqCrRGkWdJHg5SwVZZ5xh ArLowqMEvh/1RVBwU76TpUGCJht7sCvVNmTajSm8ydXEqNuOCgQ/iksfueclEWMzQ0Mw TTFHHdAUaufwnoV02zEUp2EIHd0Ut3o97pltaa178ZwfZgUAZnph2Z7LSPJuz2eJ6y7j KMSyF9H72wzjvFkdW9tHLPiNhVfBm/Hdfn/VDRApKPf19Orra6HjY1suTxiH4ib9PMcc GCRw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1758566972; x=1759171772; 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=usu7YBpSCdSYku4HM9JrcfIZ8CuetQgTTrUpbI5sQ3I=; b=dI+HolmcCmXC20qzo2DliIr4FktU5BKgny+VuXb9GzhSHdaI1Y9DtD/NIxz93PhZUM s1RwZBVamWonl72gUx5GYHTSz6dIUE/RMh1rdpnbBUQUjhOlfuE9pQHgwWPUVe8HJ3ep YKF2rV9xGF/bqn1Aqx1pxSN0ZmonHJvqsv+f7zTfCdQwZY727zBQPusAEMFIWK4BQx61 7GE3kILpmytvh1/YSxcSNuZmmJcyuf2zbG1UOiSN5OZk9dsE0uRlBxX5ktsv9zL8AjDb +GYCXVVazSb6Z83RBv89Ks9tvb+padS1hes28aLFwBdMba7Vxx/SRTVVaX8DI7FDGFwu eYHg== X-Gm-Message-State: AOJu0YxlQo1DRWdPBmEZrd2BxT3ok35A+Kc5qiErQslE4iMeW458Ysqx LHS0XAWXHRZCMBmZemNfUCZQ1p4SFCKdFK5CxavhNsdS204YBKdrmxfygfdJQrDrwBOuPYrGsDD rArAm X-Gm-Gg: ASbGncvFdXkLfMEHODG0MK8y/KcdDdbqkZut16KURdqzhQsVZINaalv3URcTUNR5IrR DrBF9CQyA4PQ5cu+/ScBm3dhkzNrJQU6or8NfJfJM1jRjbedpKLNGxcweYsI4TAfdJSj5WCa0oY zXdTh8Ea87PcevVfC6NA6AbDw7PmCsmsFnwVvcNS4WfZ0lODHdNW3vZ/XhVs8G8kRNDQ/ig3r6R gzyL4EJb9nFAwqSx0DCeTgF9yYTmLpOdHtHg1F2ygdkroAKqE5zcp+AL9CGExhvC9rvxOqLp+IF m0iWQRw5ic/L4fdUgZnz5NDrzrTA7Fwm+P3mh12v1+B787jiG2jeJRA+0VjiDrsHkZuAEQJ5fzV Li1L2Vn5DFMNDzwxJL1BvYmpDr9Rs X-Google-Smtp-Source: AGHT+IETVvMsCDlXvsd46szIOmlOkgvLZTrqXe3kGWBLJdkSm7XCSuaUvwXqPt0UkqMcz7IyDeJ//w== X-Received: by 2002:a05:6a00:139d:b0:772:fc2:be71 with SMTP id d2e1a72fcca58-77e4e8ab212mr15129226b3a.20.1758566971768; Mon, 22 Sep 2025 11:49:31 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, Pierrick Bouvier Subject: [PATCH v5 04/76] target/arm: Force HPD for stage2 translations Date: Mon, 22 Sep 2025 11:48:12 -0700 Message-ID: <20250922184924.2754205-5-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250922184924.2754205-1-richard.henderson@linaro.org> References: <20250922184924.2754205-1-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::432; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x432.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: 2.1.29 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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1758567266143116600 Content-Type: text/plain; charset="utf-8" Stage2 translations do not have hierarchial permissions. Setting HPD means we can eliminate an extra check against regime_is_stage2. Reviewed-by: Pierrick Bouvier Signed-off-by: Richard Henderson --- target/arm/helper.c | 7 +++++-- target/arm/ptw.c | 24 +++++++++++++----------- 2 files changed, 18 insertions(+), 13 deletions(-) diff --git a/target/arm/helper.c b/target/arm/helper.c index c0b499946c..f64543dc78 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -9383,8 +9383,11 @@ ARMVAParameters aa64_va_parameters(CPUARMState *env,= uint64_t va, tsz =3D extract32(tcr, 0, 6); gran =3D tg0_to_gran_size(extract32(tcr, 14, 2)); if (stage2) { - /* VTCR_EL2 */ - hpd =3D false; + /* + * Stage2 does not have hierarchical permissions. + * Thus disabling them makes things easier during ptw. + */ + hpd =3D true; } else { hpd =3D extract32(tcr, 24, 1); } diff --git a/target/arm/ptw.c b/target/arm/ptw.c index 6344971fa6..ebb260d54d 100644 --- a/target/arm/ptw.c +++ b/target/arm/ptw.c @@ -1471,8 +1471,12 @@ static ARMVAParameters aa32_va_parameters(CPUARMStat= e *env, uint32_t va, } tsz =3D sextract32(tcr, 0, 4) + 8; select =3D 0; - hpd =3D false; epd =3D false; + /* + * Stage2 does not have hierarchical permissions. + * Thus disabling them makes things easier during ptw. + */ + hpd =3D true; } else if (el =3D=3D 2) { /* HTCR */ tsz =3D extract32(tcr, 0, 3); @@ -1978,16 +1982,14 @@ static bool get_phys_addr_lpae(CPUARMState *env, S1= Translate *ptw, * except NSTable (which we have already handled). */ attrs =3D new_descriptor & (MAKE_64BIT_MASK(2, 10) | MAKE_64BIT_MASK(5= 0, 14)); - if (!regime_is_stage2(mmu_idx)) { - if (!param.hpd) { - attrs |=3D extract64(tableattrs, 0, 2) << 53; /* XN, PXN */ - /* - * The sense of AP[1] vs APTable[0] is reversed, as APTable[0]= =3D=3D 1 - * means "force PL1 access only", which means forcing AP[1] to= 0. - */ - attrs &=3D ~(extract64(tableattrs, 2, 1) << 6); /* !APT[0] =3D= > AP[1] */ - attrs |=3D extract32(tableattrs, 3, 1) << 7; /* APT[1] =3D>= AP[2] */ - } + if (!param.hpd) { + attrs |=3D extract64(tableattrs, 0, 2) << 53; /* XN, PXN */ + /* + * The sense of AP[1] vs APTable[0] is reversed, as APTable[0] =3D= =3D 1 + * means "force PL1 access only", which means forcing AP[1] to 0. + */ + attrs &=3D ~(extract64(tableattrs, 2, 1) << 6); /* !APT[0] =3D> AP= [1] */ + attrs |=3D extract32(tableattrs, 3, 1) << 7; /* APT[1] =3D> AP[= 2] */ } =20 ap =3D extract32(attrs, 6, 2); --=20 2.43.0