From nobody Mon Apr 6 19:55:29 2026 X-Original-To: dev-commits-src-main@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4fqKnG0Lbdz6Yd1B for ; Mon, 06 Apr 2026 19:55:30 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R12" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4fqKnF5PZDz3Z9X for ; Mon, 06 Apr 2026 19:55:29 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1775505329; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=1X7zSR78yzz9JNx1oFLvMmXFoGT9JgSQxYxWmd/39qw=; b=FdzYTzooc8+Q+wezOTZKPv5xXE6jn8xlFW1kWL+L0b0QCNuXNmR01n9A5su84wu6xghNbY Kf4zLe2AnEtUfcl0ls5WB0fNnHqDZ1IYKvZ5D/O6z4CQAwffofFijK2/pt8w4Cw8ItTCG5 olElWRK+nzzo+Gcnd+9mnZthJ+kORgaEbjgjBEBKXNmZ4kLH0HQZHT4LQwVSE/kSuswDsA fKfILu8AfoRrbc9h2/Vh2NbiAFXHaWBsDCHQsewlOqcYjbmpMrHkLAVW0XwG8ps8gfyG+c dVKl2tfnDV/uezyGJ5xz1V/nYqIeg/moMEuxbN9b0QsASmqtA71AmSBK5XLvIw== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1775505329; a=rsa-sha256; cv=none; b=uYZj952hHjAC1BiDEMYjD44pMM6J2V2vunsehHSFaePxb3p+E4wEde46c6kXcEdF2Ohju6 ULBK+nsl3qCb/ANZkORx0PhWseVz5x3qKg2zVMArg/6EtIHRiT/bVJCYiyqAtxqkcTEHmE Bgro8FyTHkdM5DcyWFMDUz0ODAlYUNsDt7WnHrCriLabhGaPheJx8F7m+QRBvSrUuSEyKg mPCWz4OXsKJrDJqAY59apnPaEEw50MU11M7/MHohhGo0Inxc1ppcq3HkzyLFjtjUKFK9f7 P2a+5tItYie1Gyx2+yU4GPdEMnKRPz3id7tYBV27fyJtT1zSkHeQTNanndMe/Q== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1775505329; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=1X7zSR78yzz9JNx1oFLvMmXFoGT9JgSQxYxWmd/39qw=; b=UAD35Q+GQTvdDrXJraQn6VYisX/vRT5NGylTtwMQeNNaIpS/nc0O1IYdyX90kKU/fo6Utf tiLbRPMWOaJ+tzrcZVDGX7AKseRMB11ZBm4qKr36CytjavHP0uBmV4PnBK8qAkJfy4fRzd wqm8GLxRiLIU76rq1vgIFkHYDiLmIWtqnBLkRwIOqK+MRGytGRqKgRAtiARglwnwtZOMJT PYfVnZTGfvywcvlPd4bax8nWfMQNC2wii7QsxC/ZKJi2EOkvLn4g6wBK9n2WqMhCZ4sEnD vTkgp1noeQxfJYcoE8og7Hzz1TOD0GHOUCzMWRPbcxxygr8SUdbqRSR2A+cfZQ== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4fqKnF4f9vz16hw for ; Mon, 06 Apr 2026 19:55:29 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 38484 by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Mon, 06 Apr 2026 19:55:29 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Jean-=?utf-8?Q?S=C3=A9bast?==?utf-8?Q?ien P=C3=A9?=dron Subject: git: be92ad6b12a5 - main - linuxkpi: Define `PMD_SHIFT` List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-main@freebsd.org Sender: owner-dev-commits-src-main@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: dumbbell X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: be92ad6b12a5046cecf25477e7a3e88f70e5daee Auto-Submitted: auto-generated Date: Mon, 06 Apr 2026 19:55:29 +0000 Message-Id: <69d40fb1.38484.124717d5@gitrepo.freebsd.org> The branch main has been updated by dumbbell: URL: https://cgit.FreeBSD.org/src/commit/?id=be92ad6b12a5046cecf25477e7a3e88f70e5daee commit be92ad6b12a5046cecf25477e7a3e88f70e5daee Author: Jean-Sébastien Pédron AuthorDate: 2026-03-04 20:36:20 +0000 Commit: Jean-Sébastien Pédron CommitDate: 2026-04-06 19:28:09 +0000 linuxkpi: Define `PMD_SHIFT` For now, only define it for x86 architectures. The DRM generic code started to use it in Linux 6.11. Reviewed by: bz, emaste Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D55734 --- sys/compat/linuxkpi/common/include/asm/pgtable.h | 34 ++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/sys/compat/linuxkpi/common/include/asm/pgtable.h b/sys/compat/linuxkpi/common/include/asm/pgtable.h index 865662d587db..166d6142d51c 100644 --- a/sys/compat/linuxkpi/common/include/asm/pgtable.h +++ b/sys/compat/linuxkpi/common/include/asm/pgtable.h @@ -53,6 +53,40 @@ typedef struct page *pgtable_t; #define _PAGE_PWT (((pteval_t) 1) << _PAGE_BIT_PWT) #define _PAGE_PCD (((pteval_t) 1) << _PAGE_BIT_PCD) #define _PAGE_PAT (((pteval_t) 1) << _PAGE_BIT_PAT) + +/* + * On Linux, the value of `PMD_SHIFT` is hard-coded to 21. This corresponds to + * the FreeBSD `PDRSHIFT` constant. + */ +#define PMD_SHIFT PDRSHIFT + +#elif defined(__aarch64__) + +/* + * On Linux, the value of `PMD_SHIFT` is computed from `CONFIG_PGTABLE_LEVELS`. + * The result corresponds to one of the FreeBSD `L*_SHIFT` constants. Here, we + * take the value 21 computed from `CONFIG_PGTABLE_LEVELS = 4`, the default on + * aarch64, which equals to `L2_SHIFT`. + */ +#define PMD_SHIFT L2_SHIFT + +#elif defined(__powerpc__) + +/* + * On Linux, the value of `PMD_SHIFT` is the addition of `PAGE_SHIFT` and + * `PTE_INDEX_SIZE` (hard-coded to 9). The result corresponds to the FreeBSD + * `L3_PAGE_SIZE_SHIFT` constant. + */ +#define PMD_SHIFT L3_PAGE_SIZE_SHIFT + +#elif defined(__riscv) + +/* + * On Linux, the value of `PMD_SHIFT` is hard-coded to 21. This corresponds to + * the FreeBSD `L2_SHIFT` constant. + */ +#define PMD_SHIFT L2_SHIFT + #endif #endif /* _LINUXKPI_ASM_PGTABLE_H_ */