From nobody Fri Oct 3 23:04:04 2025 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8387C1F4174; Fri, 22 Aug 2025 17:43:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755884607; cv=none; b=WxCEFr7pqFs+nL5P2gbE1tKh5h/ozdwopXdR8avJ2p5G641O/zh4135rf/jTzUacEmFCd/amwtRsZOpwvILXQhchrIFefVIf9P6JdXiIhwWuJwAyt9B7QYCpP775dP1RdMF30or/Hmu8w1Q10SPfOX5IPFT9XivKdPC4SCNVPtA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755884607; c=relaxed/simple; bh=oEfasGh41KBh5fYdN6nlrGlV8sW7nRXIke3x3+XapnM=; h=Date:From:To:Subject:Cc:MIME-Version:Message-ID:Content-Type; b=gjAFLWDoIzZHoKhjjRQ1yuoJAg70EsftpcfELvfl+wNuKEoHqSbbTpKYY/thDgFVfe2ReS5fyvyTxTVHXnmK1SzCpl+K0VsChOAdEwRfMGpSSNjtP2aW17HpWQDVM1f+rSOeq+FeZ+Jw+d/57QbFTl3kbhDJknniWAP09cQsU1U= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=dlSGzuSx; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=3MKF8C19; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="dlSGzuSx"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="3MKF8C19" Date: Fri, 22 Aug 2025 17:43:20 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1755884601; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=uKiUmkV2XJhzDpHbwftiaFG3YLHKpDS1BDzRvK2c0CI=; b=dlSGzuSxGk0DPg1528fQkOACTGP4OKGSGmBcwGOTOxEiSSfIVMzSg1IwzYvX5mf4QaOIOl SaGZEJkmCwZIcqvm9ZUHt/5ZPguhJZxci9CY+gTDFFQq9VLh4lqi7EBo4OKEYjJOI9J4df 7RkNMGn+YGyl0dOvjSlfudvtDViFOSXWYZkL/4kDv/VDefJtSnFOphvyQgJ3TbsBWop4tn wKBgSORt9tRhOxE85VxA3llylAedLHebsotBUTaoT3Ro3ZEjAkxuqB+AQNUhQMMUy9dQMu D5xTW4B9LlrJIJq8pafG+/G74R4HGyTYYDFggXFaMfAItKuVvRfWLzj9M5XYdw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1755884601; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=uKiUmkV2XJhzDpHbwftiaFG3YLHKpDS1BDzRvK2c0CI=; b=3MKF8C19Xom+AuXIWBPCaKz2wzV0s9ARqB5x2CS5uthXFhDUekb5f9r4GJyePhYvVbmgpD 6LRtb60bigOAyQBA== From: "tip-bot2 for Yu-cheng Yu" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: x86/mm] x86/mm: Change cpa_flush() to call flush_kernel_range() directly Cc: "Yu-cheng Yu" , Rik van Riel , Dave Hansen , x86@kernel.org, linux-kernel@vger.kernel.org Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <175588460052.1420.3714146338769865045.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the x86/mm branch of tip: Commit-ID: 86e6815b316ec0ea8c4bb3c16a033219a52b6060 Gitweb: https://git.kernel.org/tip/86e6815b316ec0ea8c4bb3c16a033219a= 52b6060 Author: Yu-cheng Yu AuthorDate: Fri, 06 Jun 2025 13:10:35 -04:00 Committer: Dave Hansen CommitterDate: Fri, 22 Aug 2025 07:55:21 -07:00 x86/mm: Change cpa_flush() to call flush_kernel_range() directly The function cpa_flush() calls __flush_tlb_one_kernel() and flush_tlb_all(). Replacing that with a call to flush_tlb_kernel_range() allows cpa_flush() to make use of INVLPGB or RAR without any additional changes. Initialize invlpgb_count_max to 1, since flush_tlb_kernel_range() can now be called before invlpgb_count_max has been initialized to the value read from CPUID. [riel: remove now unused __cpa_flush_tlb] Signed-off-by: Yu-cheng Yu Signed-off-by: Rik van Riel Signed-off-by: Dave Hansen Acked-by: Dave Hansen Link: https://lore.kernel.org/all/20250606171112.4013261-4-riel%40surriel.c= om --- arch/x86/mm/pat/set_memory.c | 20 +++++++------------- 1 file changed, 7 insertions(+), 13 deletions(-) diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c index 8834c76..d2d54b8 100644 --- a/arch/x86/mm/pat/set_memory.c +++ b/arch/x86/mm/pat/set_memory.c @@ -399,15 +399,6 @@ static void cpa_flush_all(unsigned long cache) on_each_cpu(__cpa_flush_all, (void *) cache, 1); } =20 -static void __cpa_flush_tlb(void *data) -{ - struct cpa_data *cpa =3D data; - unsigned int i; - - for (i =3D 0; i < cpa->numpages; i++) - flush_tlb_one_kernel(fix_addr(__cpa_addr(cpa, i))); -} - static int collapse_large_pages(unsigned long addr, struct list_head *pgta= bles); =20 static void cpa_collapse_large_pages(struct cpa_data *cpa) @@ -444,6 +435,7 @@ static void cpa_collapse_large_pages(struct cpa_data *c= pa) =20 static void cpa_flush(struct cpa_data *cpa, int cache) { + unsigned long start, end; unsigned int i; =20 BUG_ON(irqs_disabled() && !early_boot_irqs_disabled); @@ -453,10 +445,12 @@ static void cpa_flush(struct cpa_data *cpa, int cache) goto collapse_large_pages; } =20 - if (cpa->force_flush_all || cpa->numpages > tlb_single_page_flush_ceiling) - flush_tlb_all(); - else - on_each_cpu(__cpa_flush_tlb, cpa, 1); + start =3D fix_addr(__cpa_addr(cpa, 0)); + end =3D fix_addr(__cpa_addr(cpa, cpa->numpages)); + if (cpa->force_flush_all) + end =3D TLB_FLUSH_ALL; + + flush_tlb_kernel_range(start, end); =20 if (!cache) goto collapse_large_pages;