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[37.24.206.209]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a9943ea4936sm528286466b.174.2024.10.09.02.23.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 09 Oct 2024 02:23:48 -0700 (PDT) X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 30cf13b0-8620-11ef-a0bd-8be0dac302b0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=google; t=1728465828; x=1729070628; darn=lists.xenproject.org; h=content-transfer-encoding:in-reply-to:autocrypt:content-language :references:cc:to:from:subject:user-agent:mime-version:date :message-id:from:to:cc:subject:date:message-id:reply-to; bh=4/p9q6zzF3dEdrk0EDrk/Q8JWw7Bgak8AAujM54KwSo=; b=KocezMmJwmuWu9jemXbqvK6UqY1X2oMLBqa/2JedK3zZVgmHc0wT7QkfqkzuUzJzEx DoGs14IfQn/F0oxCrd1zXqLpS6M5VhyM/E3kQ9eZ55gQ4YmjfXPZgE1f1MbEbb2IYxbB r7V3CL7j5rCh97wbTADBmK6FgYRiHgswNx7om2WfMBcFsY1yMpVWHSS1F8J/IznDkeBm 4quQ8hA1X+kvsFUf/gEg+Bp11Xq4+n8K9FwQ4+Tdf7nDiOgv1U08u9ynb237DtcXtKvP XkB7w4PQ5kuWoCu+ehGhwXLPa4JEDMbuVAnLtSDwIKzDtm+/B9IHrlm0JnT18QzwcUyw nqcw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728465828; x=1729070628; h=content-transfer-encoding:in-reply-to:autocrypt:content-language :references:cc:to:from:subject:user-agent:mime-version:date :message-id:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=4/p9q6zzF3dEdrk0EDrk/Q8JWw7Bgak8AAujM54KwSo=; b=D4clKHsosa8y4iASuZKqUWoMnkPhfo0jVfvAqw2QgdY8sZFg//E6QRvF/4G3Yf2oIS YJaKj6mHF73p96aSoeO0srpp8jS2IzDZRIEvl1guWLEkcaJ6uXTwiMgf37isDFqK244h nbxOGIpL7NISOebw3swh0NTUrKI8UUBCjnOdd5Q0Kn4UD7763/7VtogYZhdhKv/DERLJ gDQ2XvkxTn4ki57R573B8aSlB1HCuifCWfoqEhEzwsgz2+PcjKnK/mCoy4imtO1SaOFS pbgSOAhNkQC3K1X7g3KviCXzbC2igFPGaa6Gpg1cucH3yO/czyKAaZjEfRDatK1EdOyV UKIg== X-Gm-Message-State: AOJu0YwsT7F4ckU0XJmr8Wh7LlyYWgopRTUXPMya5kZeolBQJ96nekjb bEQtlJXTeZYSGlabVXSsYjnHnjItVsh1Qkfslb8h2o3/y2/1EFAclQ3x0vwg+DTswKrlkVEGetI = X-Google-Smtp-Source: AGHT+IHYUMA03wMgqdCv4B2ttcqDQw/CpkrylMiuFbcdYfLc2ADuFOei/2xd8o7eBKuwzt3vUdxTUA== X-Received: by 2002:a17:907:1c1a:b0:a99:2ab0:d973 with SMTP id a640c23a62f3a-a998d341895mr132202966b.55.1728465828372; Wed, 09 Oct 2024 02:23:48 -0700 (PDT) Message-ID: Date: Wed, 9 Oct 2024 11:23:47 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: [PATCH 4/7] x86: modernize swab64() From: Jan Beulich To: "xen-devel@lists.xenproject.org" Cc: Andrew Cooper , =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= References: <17b6b894-9b41-4e8c-a3a9-ce837797eac3@suse.com> Content-Language: en-US Autocrypt: addr=jbeulich@suse.com; keydata= xsDiBFk3nEQRBADAEaSw6zC/EJkiwGPXbWtPxl2xCdSoeepS07jW8UgcHNurfHvUzogEq5xk hu507c3BarVjyWCJOylMNR98Yd8VqD9UfmX0Hb8/BrA+Hl6/DB/eqGptrf4BSRwcZQM32aZK 7Pj2XbGWIUrZrd70x1eAP9QE3P79Y2oLrsCgbZJfEwCgvz9JjGmQqQkRiTVzlZVCJYcyGGsD /0tbFCzD2h20ahe8rC1gbb3K3qk+LpBtvjBu1RY9drYk0NymiGbJWZgab6t1jM7sk2vuf0Py O9Hf9XBmK0uE9IgMaiCpc32XV9oASz6UJebwkX+zF2jG5I1BfnO9g7KlotcA/v5ClMjgo6Gl MDY4HxoSRu3i1cqqSDtVlt+AOVBJBACrZcnHAUSuCXBPy0jOlBhxPqRWv6ND4c9PH1xjQ3NP nxJuMBS8rnNg22uyfAgmBKNLpLgAGVRMZGaGoJObGf72s6TeIqKJo/LtggAS9qAUiuKVnygo 3wjfkS9A3DRO+SpU7JqWdsveeIQyeyEJ/8PTowmSQLakF+3fote9ybzd880fSmFuIEJldWxp Y2ggPGpiZXVsaWNoQHN1c2UuY29tPsJgBBMRAgAgBQJZN5xEAhsDBgsJCAcDAgQVAggDBBYC AwECHgECF4AACgkQoDSui/t3IH4J+wCfQ5jHdEjCRHj23O/5ttg9r9OIruwAn3103WUITZee e7Sbg12UgcQ5lv7SzsFNBFk3nEQQCACCuTjCjFOUdi5Nm244F+78kLghRcin/awv+IrTcIWF hUpSs1Y91iQQ7KItirz5uwCPlwejSJDQJLIS+QtJHaXDXeV6NI0Uef1hP20+y8qydDiVkv6l IreXjTb7DvksRgJNvCkWtYnlS3mYvQ9NzS9PhyALWbXnH6sIJd2O9lKS1Mrfq+y0IXCP10eS FFGg+Av3IQeFatkJAyju0PPthyTqxSI4lZYuJVPknzgaeuJv/2NccrPvmeDg6Coe7ZIeQ8Yj t0ARxu2xytAkkLCel1Lz1WLmwLstV30g80nkgZf/wr+/BXJW/oIvRlonUkxv+IbBM3dX2OV8 AmRv1ySWPTP7AAMFB/9PQK/VtlNUJvg8GXj9ootzrteGfVZVVT4XBJkfwBcpC/XcPzldjv+3 HYudvpdNK3lLujXeA5fLOH+Z/G9WBc5pFVSMocI71I8bT8lIAzreg0WvkWg5V2WZsUMlnDL9 mpwIGFhlbM3gfDMs7MPMu8YQRFVdUvtSpaAs8OFfGQ0ia3LGZcjA6Ik2+xcqscEJzNH+qh8V m5jjp28yZgaqTaRbg3M/+MTbMpicpZuqF4rnB0AQD12/3BNWDR6bmh+EkYSMcEIpQmBM51qM EKYTQGybRCjpnKHGOxG0rfFY1085mBDZCH5Kx0cl0HVJuQKC+dV2ZY5AqjcKwAxpE75MLFkr wkkEGBECAAkFAlk3nEQCGwwACgkQoDSui/t3IH7nnwCfcJWUDUFKdCsBH/E5d+0ZnMQi+G0A nAuWpQkjM1ASeQwSHEeAWPgskBQL In-Reply-To: <17b6b894-9b41-4e8c-a3a9-ce837797eac3@suse.com> Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @suse.com) X-ZM-MESSAGEID: 1728465877510116600 Content-Type: text/plain; charset="utf-8" For quite a while we didn't need to be concerned of 32-bit code generation anymore: Simply use the 64-bit form of BSWAP here. Signed-off-by: Jan Beulich --- a/xen/arch/x86/include/asm/byteorder.h +++ b/xen/arch/x86/include/asm/byteorder.h @@ -10,17 +10,10 @@ static inline attr_const __u32 ___arch__ return x; } =20 -static inline attr_const __u64 ___arch__swab64(__u64 val) +static inline attr_const uint64_t ___arch__swab64(uint64_t x) {=20 - union {=20 - struct { __u32 a,b; } s; - __u64 u; - } v; - v.u =3D val; - asm("bswapl %0 ; bswapl %1 ; xchgl %0,%1"=20 - : "=3Dr" (v.s.a), "=3Dr" (v.s.b)=20 - : "0" (v.s.a), "1" (v.s.b));=20 - return v.u; + asm ( "bswap %0" : "+r" (x) ); + return x; }=20 =20 /* Do not define swab16. Gcc is smart enough to recognize "C" version and