From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f175.google.com (mail-pf1-f175.google.com [209.85.210.175]) (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 1E8032DE1FE for ; Wed, 5 Nov 2025 09:49:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.175 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762336168; cv=none; b=fSZA31YsTscM0rHlWlNevxpA/Ldd3+RqXPq+WK9awvXPK1rQ6NvQRqxDkRWKzasUWt/rBE+diniufifD7fFB5Dm8wLqbA0qaJv3Mdmt+F8pkmrKfcDEzd5JL+ZU/WGxeTYpm/EIA7WilV4apPKpNLpn4RO2PJLWv423X01CDQHQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762336168; c=relaxed/simple; bh=NC6ReN0WzQGGaTyVdcbh4RmGorXBkU+fbc8xzhNkKSw=; h=From:To:Cc:Subject:In-Reply-To:Date:Message-ID:References: MIME-Version:Content-Type; b=fS4nFw+dBZz3cVeRFRYUW1ip2eJeRu4Xx1jVnLxfUsmjWX70mO5J1tuFVtCRl4+baHcDeL9E6qDlRLaCPwUe1SwoOwefIpZV6M0pZGpE+gzalkJdcKuNf60Fgls1L0KgftrsLpktpY/Av5DyIDfawU45ul4eoLZSUsUcPrx7o2I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=RQWVYUax; arc=none smtp.client-ip=209.85.210.175 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="RQWVYUax" Received: by mail-pf1-f175.google.com with SMTP id d2e1a72fcca58-7810289cd4bso7298566b3a.2 for ; Wed, 05 Nov 2025 01:49:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1762336166; x=1762940966; darn=vger.kernel.org; h=mime-version:references:message-id:date:in-reply-to:subject:cc:to :from:from:to:cc:subject:date:message-id:reply-to; bh=KSkImeW26wxHMAXfbe7WvrT7t//6KWteMn9Q9gZQJTU=; b=RQWVYUaxEoTzw1PGOUe6ayh6KYlnYA/MLK2sT+N8I7zVI4gX3wo454Lj0dp7cuU68v nFkEe5Ld2Uk1l0IoFfMp/Qv7XNRzmnOgBvSr26qvW8mcRRQLfbEhbXpxeaI8fYp9tv4a hd4Twyg/cs4rBf4Rt7RNdYLmnU07TDLzW+xMhmStFUy6wh3JdgubgpucisbbLwkhFhPr rkFhU7I1DBeCXaXTZF02A8fUxKp+QhUh7iUrL5+gqKnAQmavUnQHG89QvR90qGFAcmjM KvKo8Kq7cIqsGRiMTLMA6P7AO3dnQLXxmG7xZpXt8+QG5d45NhqjAL2GSGzEOxxAnNkO RizQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1762336166; x=1762940966; h=mime-version:references:message-id:date:in-reply-to:subject:cc:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=KSkImeW26wxHMAXfbe7WvrT7t//6KWteMn9Q9gZQJTU=; b=MuwoNXMmZKCNikHMJTruU5M2Mjyg//0waElkspyOA1I+CLCeglzk/UCBQbkJ+xm8XL QRxUgjURtEampKsYxfXiPuPleLR3wpkiO4QJw+TVAqsMpBYnzdT6Joo8sIPTSezcQoM4 3zkMF/mQujpQT+NxBdAyVzJpHBrz3+9qAvKPxaVHFyuAZNzm2DrQQROx9tz6KRMYMuw2 s/1T9MMlb9QCD+Ehwntpdkh+UKceSDp9edNt0XI9EKbsFU/ZtwSRbwza5S6RMyNMe5xH TJGurUyoSjdTC7VO+t2XGHC2B30VockxOsf8B0DivaGU87RAevcjui81mrk37e4xEdkn XWPw== X-Gm-Message-State: AOJu0YyFrISiZIETRXeE1fRemXQ7qDkFHVvxSEZTpcSAwJc9ygHOC48l rQO4lM5GieUWAd8G9rXRmLsm/DyDG75WULjDN5W9/0y0T9yfZRwGeaci X-Gm-Gg: ASbGncuY+qyi54wuUhsTcMe4nJOY5G9JFqA9r6HDh/CEJXMpk9Wf1RcTwYg1Wwx0WyD wwVqcob4lZ6sF/snsAhOSgh0cv9yu1JLDzAeiaEoq1mMbkkoHfkyb65Vrvz3qiiMjzbUk6HkG1o ICDYuHZnbG/+xrhk3AeUpzz6j/Fb7ZLYjW1bEsdNOCN+b/tG2168XB0YJ1BtiDrZ+f9bcTl7e65 A5a8XYdsZ0k9r0p80zrHpT+oQ4bYA/Kz91ZEGYJWnabnLUsWKpvKRPU3MmAKg9qXW/bhvL9zOSY jmrwKblXGcRmkLb1UEyy9BW18No36FbAXAJ/b0lxKve1QqpSjfLXRsryUVFxlvqXVLxCVfef58q bUot+o37mWkPYDGAVroD3qDQyV37Oa3cpHaDlDGRs4KTOuWD/uIGQMKEunEjT9YB9/jWo6w== X-Google-Smtp-Source: AGHT+IGvXEix8Ale69u5jY13ojKwbWl3rHLnPywsClHEKGLTCQBX8z03LTjZkKtfW5wInDfRAomLmQ== X-Received: by 2002:a05:6a20:7283:b0:343:88b4:a722 with SMTP id adf61e73a8af0-34f862ff4a8mr3711914637.52.1762336166397; Wed, 05 Nov 2025 01:49:26 -0800 (PST) Received: from dw-tp ([171.76.85.117]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-ba1f765f148sm5030694a12.24.2025.11.05.01.49.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Nov 2025 01:49:25 -0800 (PST) From: Ritesh Harjani (IBM) To: Kevin Brodsky , linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, Kevin Brodsky , Alexander Gordeev , Andreas Larsson , Andrew Morton , Boris Ostrovsky , Borislav Petkov , Catalin Marinas , Christophe Leroy , Dave Hansen , David Hildenbrand , "David S. Miller" , David Woodhouse , "H. Peter Anvin" , Ingo Molnar , Jann Horn , Juergen Gross , "Liam R. Howlett" , Lorenzo Stoakes , Madhavan Srinivasan , Michael Ellerman , Michal Hocko , Mike Rapoport , Nicholas Piggin , Peter Zijlstra , Ryan Roberts , Suren Baghdasaryan , Thomas Gleixner , Vlastimil Babka , Will Deacon , Yeoreum Yun , linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, xen-devel@lists.xenproject.org, x86@kernel.org Subject: Re: [PATCH v4 09/12] powerpc/mm: replace batch->active with in_lazy_mmu_mode() In-Reply-To: <20251029100909.3381140-10-kevin.brodsky@arm.com> Date: Wed, 05 Nov 2025 15:10:20 +0530 Message-ID: <87ldkk4y2j.ritesh.list@gmail.com> References: <20251029100909.3381140-1-kevin.brodsky@arm.com> <20251029100909.3381140-10-kevin.brodsky@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain Kevin Brodsky writes: > A per-CPU batch struct is activated when entering lazy MMU mode; its > lifetime is the same as the lazy MMU section (it is deactivated when > leaving the mode). Preemption is disabled in that interval to ensure > that the per-CPU reference remains valid. > > The generic lazy_mmu layer now tracks whether a task is in lazy MMU > mode. We can therefore use the generic helper in_lazy_mmu_mode() > to tell whether a batch struct is active instead of tracking it > explicitly. > > Signed-off-by: Kevin Brodsky > --- > arch/powerpc/include/asm/book3s/64/tlbflush-hash.h | 9 --------- > arch/powerpc/mm/book3s64/hash_tlb.c | 2 +- > 2 files changed, 1 insertion(+), 10 deletions(-) > This looks good to me. Reviewed-by: Ritesh Harjani (IBM)