From nobody Mon Feb 9 21:22:09 2026 Received: from mail-qk1-f177.google.com (mail-qk1-f177.google.com [209.85.222.177]) (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 79686F9FD for ; Mon, 12 Feb 2024 02:55:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.222.177 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707706539; cv=none; b=Z+0meDHxbuMvR3hFA9FVyRj0BaRNm6NoDjvXcfKjSffxew3cjEGwjA/sn388gpuoOxkebVqbknt7oUQKJ31MQei4LQGPBTDtqvrQZ6Zrb6TbXzEHO/bLXYWMyZs/YI1Q0Yd9tdXOaYCzMSj0WPRxqTTVGfioAgpsTQsoH2C86Ws= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707706539; c=relaxed/simple; bh=IaMQ9U5EU7ibbNGTdLeyIyKmzolIE/sYWan1D8m1xQU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IXQtLKVGgbo5xEkWyOY6DEovJA+9hQDeTsNtipDc/EodrSLxBVphZwJT+TLQjh9JhgeeAy+pZWHW1Vl59725oLu/WBl8FaVz39T5PI1w6Pk0QQ4z+Yeu7m2D4qfVUWMKYNQ9+qffl+opkjPODAkslq7X0qEMZAi83ii2He1D/is= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=sifive.com; spf=pass smtp.mailfrom=sifive.com; dkim=pass (2048-bit key) header.d=sifive.com header.i=@sifive.com header.b=BZQ0LUb3; arc=none smtp.client-ip=209.85.222.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=sifive.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sifive.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sifive.com header.i=@sifive.com header.b="BZQ0LUb3" Received: by mail-qk1-f177.google.com with SMTP id af79cd13be357-7838af983c1so241469385a.3 for ; Sun, 11 Feb 2024 18:55:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; t=1707706536; x=1708311336; 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=PK2hM2nZE9ySNRKSB/nk6SwrsE+3tTyo2UQmA0OZOPw=; b=BZQ0LUb3v3O9HrUfsj1ReEptXshrZriu2nmMmrdL1GfVzrMorI45Olgm2Na1EvgPPn pd7xwKyesShxNrH33csfgkBbWkXrPMvDmZan3ESNWq3uhraTKlyGmChE9RsB/Asv8NmD uqnpexoLZb+JNlN4o5VauLAC4GwAoTAOG2fA9iWISXcMRkLv0XFIB29KfxVMtdoayWS+ sWSUQkNEXtYwUDIqhwxbr6EMS9g44AU5nLVO7h4t7QR9+I8H5T+vuuIooBwDZLgCzxgR Tl6AbLC7v+3VxUhyHOOZukxkgc5oQW5FRMmgczhjdveFSBE31CTD8lTdW1opTd25P5AP ipag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1707706536; x=1708311336; 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=PK2hM2nZE9ySNRKSB/nk6SwrsE+3tTyo2UQmA0OZOPw=; b=cQc+CGEgeYmb8/n9x673gMCfxP7rUB/NF80Zctux+fi3NQSBYLMLnoOtltD8iViFsI +xhIeVaHS/j/Ty2Oc5nqIN4p1WX4IHy9AsGvW+/4IGPDsdFlT87yZ7pYaheFTUMIQlGX lSdLSv3CNgeNCpu2qPvOYHjWYrqE6B4pCXfywkKk9qpqgB2jQbIliWWPWeWF3+yc6WE4 VuShbdtl+sn4ZE5EspsOUcJsH8xb3J1k8w0h/3WtWzlssVd45oshjcX97AihnW609E1R k0cI6jQBr5bpEVppwu/Ic1EaFNufZowB5O0UPgj/PVvPWVpCEr8OloauHCqD1ka4VSIU hCEw== X-Gm-Message-State: AOJu0Yx7NB74OhoCBCYHKc/6+AUYO8PueGZhHud/sUoulnzWeqYEH/ZG Q2piBe43KWIZgYHsOv/EQEO6DUnC0JqH3MyNT6pl3RiMfQ5g8tS3ek/g9uOxsvM= X-Google-Smtp-Source: AGHT+IEJZiiN+n5FqhSyHOC/KRPz1kIg5v3LNtLiqUhxBX3/4QKShWOHHV0lSJwdo/2+wfJXwKlCGQ== X-Received: by 2002:a05:620a:4492:b0:785:afa3:6c0b with SMTP id x18-20020a05620a449200b00785afa36c0bmr8529739qkp.52.1707706536469; Sun, 11 Feb 2024 18:55:36 -0800 (PST) X-Forwarded-Encrypted: i=1; AJvYcCX+KlvTiXx022Iyrq5kcQK+MzTTlcaxsSbYU2t+6MhI5RpPjrlocOnjYKK/WCv3H83/9SWx7WX/BFI+bbrFB0A4cr9omAmYvnt7rtoYc7xaGrWDlBZz5xD632qkgPpJq6IWM1seYeIr Received: from sw06.internal.sifive.com ([4.53.31.132]) by smtp.gmail.com with ESMTPSA id lb3-20020a170902fa4300b001d9af77893esm4906443plb.58.2024.02.11.18.55.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 11 Feb 2024 18:55:36 -0800 (PST) From: Samuel Holland To: Palmer Dabbelt Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Samuel Holland Subject: [PATCH 6/7] riscv: Use offset_in_page() in text patching functions Date: Sun, 11 Feb 2024 18:55:17 -0800 Message-ID: <20240212025529.1971876-7-samuel.holland@sifive.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240212025529.1971876-1-samuel.holland@sifive.com> References: <20240212025529.1971876-1-samuel.holland@sifive.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This is a bit easier to parse than the equivalent bit manipulation. Signed-off-by: Samuel Holland Reviewed-by: Bj=C3=B6rn T=C3=B6pel --- arch/riscv/kernel/patch.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/riscv/kernel/patch.c b/arch/riscv/kernel/patch.c index 9aa0050225c0..b0cf050738aa 100644 --- a/arch/riscv/kernel/patch.c +++ b/arch/riscv/kernel/patch.c @@ -54,7 +54,7 @@ static __always_inline void *patch_map(void *addr, const = unsigned int fixmap) BUG_ON(!page); =20 return (void *)set_fixmap_offset(fixmap, page_to_phys(page) + - (uintaddr & ~PAGE_MASK)); + offset_in_page(addr)); } =20 static void patch_unmap(int fixmap) @@ -65,8 +65,8 @@ NOKPROBE_SYMBOL(patch_unmap); =20 static int __patch_insn_set(void *addr, u8 c, size_t len) { + bool across_pages =3D (offset_in_page(addr) + len) > PAGE_SIZE; void *waddr =3D addr; - bool across_pages =3D (((uintptr_t)addr & ~PAGE_MASK) + len) > PAGE_SIZE; =20 /* * Only two pages can be mapped at a time for writing. @@ -98,8 +98,8 @@ NOKPROBE_SYMBOL(__patch_insn_set); =20 static int __patch_insn_write(void *addr, const void *insn, size_t len) { + bool across_pages =3D (offset_in_page(addr) + len) > PAGE_SIZE; void *waddr =3D addr; - bool across_pages =3D (((uintptr_t) addr & ~PAGE_MASK) + len) > PAGE_SIZE; int ret; =20 /* --=20 2.43.0