From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id AA6371073CA4 for ; Wed, 8 Apr 2026 12:28:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=+iTfzKY+WAyMsREVjbsVA8K2liOA6jif1jDazY61mGM=; b=01mCz21U6gaLmwJITIsRZKRirL 7l1L750DbMlJAzncg3jVeclLCRlPAJG6tO+NqJ30RQBtS3RVp78vnAtubijV6h8Mta/P9ZYpncnSn XkMFSalDQooMvEPiYn8eZdvb+qERuJR25lfeDR1+zztITylasHeVrUgewct4WPLVFOCBJoapZBlj4 cBZiWlQ2PUhGUfvT6KSQVM1ma4u8FOG0Habg0FaiwfL+XTdvCs+tJ7vzPjlNBrAu4a/v18w4E1RiT f/F4crSObZOcfeCIepND1F6RxF9F5cZVCKjRraRRGMG2CoRr+BbmRQ7sy+Cx8Gk/R2DO2WLpzRx2b sGD+RfDQ==; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260408_052848_196583_C246D96E X-CRM114-Status: GOOD ( 15.36 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 2/24/26 06:11, Anshuman Khandual wrote: > Route all cmpxchg() operations performed on various page table entries to a > new ptdesc_cmpxchg_relaxed() helper. Similarly route all xchg() operations > performed on page table entries to a new ptdesc_xchg_relaxed() helper. > > Currently these helpers just forward to the same APIs that were previously > called direct, but in future we will change the routing for D128 which is > too long to use the standard APIs. > > Cc: Catalin Marinas > Cc: Will Deacon > Cc: Ryan Roberts > Cc: Mark Rutland > Cc: linux-arm-kernel@lists.infradead.org > Cc: linux-kernel@vger.kernel.org > Signed-off-by: Anshuman Khandual > --- > arch/arm64/include/asm/pgtable.h | 23 +++++++++++++++++------ > arch/arm64/mm/fault.c | 2 +- > 2 files changed, 18 insertions(+), 7 deletions(-) > > diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h > index 42124d2f323d..cf69ce68f951 100644 > --- a/arch/arm64/include/asm/pgtable.h > +++ b/arch/arm64/include/asm/pgtable.h > @@ -87,6 +87,17 @@ static inline void arch_leave_lazy_mmu_mode(void) > #define ptdesc_get(x) READ_ONCE(x) > #define ptdesc_set(x, val) WRITE_ONCE(x, val) > > +static inline ptdesc_t ptdesc_cmpxchg_relaxed(ptdesc_t *ptep, ptdesc_t old, > + ptdesc_t new) > +{ > + return cmpxchg_relaxed(ptep, old, new); > +} > + > +static inline ptdesc_t ptdesc_xchg_relaxed(ptdesc_t *ptep, ptdesc_t new) > +{ > + return xchg_relaxed(ptep, new); > +} > + We really want the rename of ptdesc_t before this change. -- Cheers, David