From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: [PATCH 0/8] Use correctly the Xen memory terminologies in Linux Date: Tue, 28 Jul 2015 16:02:41 +0100 Message-ID: <1438095769-2560-1-git-send-email-julien.grall@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Sender: linux-scsi-owner@vger.kernel.org To: xen-devel@lists.xenproject.org Cc: ian.campbell@citrix.com, stefano.stabellini@eu.citrix.com, linux-kernel@vger.kernel.org, Julien Grall , Boris Ostrovsky , David Vrabel , Dmitry Torokhov , Greg Kroah-Hartman , "H. Peter Anvin" , Ingo Molnar , "James E.J. Bottomley" , Jean-Christophe Plagniol-Villard , Jiri Slaby , Juergen Gross , Konrad Rzeszutek Wilk , linux-api@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-fbdev@vger.kernel.org, linux-input@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-scsi@vger.kernel.org, netdev@vger.kernel.org, =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= R List-Id: linux-api@vger.kernel.org Hi all, This patch series aims to use the memory terminologies described in include/linux/mm.h [1] for Linux xen code. Linux is using mistakenly MFN when GFN is meant, I suspect this is beca= use the first support of Xen was for PV. This has brought some misimplementatio= n of memory helpers on ARM and make the developper confused about the exp= ected behavior. =46or instance, with pfn_to_mfn, we expect to get a MFN based on the na= me. Although, if we look at the implementation on x86, it's returning a GFN= =2E Most of the callers are also using it this way. The first 2 patches of this series is ARM related in order to remove PV specific helpers which should not be used and fixing the implementat= ion of pfn_to_mfn. The rest of the series is here rename most of the usage in the common c= ode of MFN to GFN. I also took the opportunity to replace most of the call = to pfn_to_gfn in the common code by page_to_gfn avoid construction such as pfn_to_gfn(page_to_pfn(...). Note the one xen-blkfront will be dropped by 64K series [2], I can incl= ude it if necessary. This series is based on Linux 4.2-rc4. A branch with all the patches can be found here: git://xenbits.xen.org/people/julieng/linux-arm.git branch page-rena= ming-v1 Sincerely yours, [1] Xen tree: e758ed14f390342513405dd766e874934573e6cb [2] https://lkml.org/lkml/2015/7/9/628 Cc: Boris Ostrovsky Cc: David Vrabel Cc: Dmitry Torokhov Cc: Greg Kroah-Hartman Cc: "H. Peter Anvin" Cc: Ian Campbell Cc: Ingo Molnar Cc: "James E.J. Bottomley" Cc: Jean-Christophe Plagniol-Villard Cc: Jiri Slaby Cc: Juergen Gross Cc: Konrad Rzeszutek Wilk Cc: linux-api@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-fbdev@vger.kernel.org Cc: linux-input@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-scsi@vger.kernel.org Cc: netdev@vger.kernel.org Cc: "Roger Pau Monn=C3=A9" Cc: Russell King Cc: Stefano Stabellini Cc: Thomas Gleixner Cc: Tomi Valkeinen Cc: Wei Liu Cc: x86@kernel.org Julien Grall (8): arm/xen: Remove helpers which are PV specific xen: Make clear that swiotlb and biomerge are dealing with DMA addres= s arm/xen: implement correctly pfn_to_mfn xen: Use the correctly the Xen memory terminologies xen/tmem: Use page_to_gfn rather than pfn_to_gfn video/xen-fbfront: Further s/MFN/GFN clean-up hvc/xen: Further s/MFN/GFN clean-up xen/privcmd: Further s/MFN/GFN/ clean-up arch/arm/include/asm/xen/page.h | 44 +++++++++++++++----------= ----- arch/arm/xen/enlighten.c | 18 ++++++------- arch/arm/xen/mm.c | 4 +-- arch/x86/include/asm/xen/page.h | 34 +++++++++++++---------- arch/x86/xen/enlighten.c | 4 +-- arch/x86/xen/mmu.c | 48 ++++++++++++++++---------= -------- arch/x86/xen/p2m.c | 32 +++++++++++----------- arch/x86/xen/setup.c | 12 ++++----- arch/x86/xen/smp.c | 4 +-- arch/x86/xen/suspend.c | 8 +++--- drivers/block/xen-blkfront.c | 6 ++--- drivers/input/misc/xen-kbdfront.c | 4 +-- drivers/net/xen-netback/netback.c | 4 +-- drivers/net/xen-netfront.c | 8 +++--- drivers/scsi/xen-scsifront.c | 8 +++--- drivers/tty/hvc/hvc_xen.c | 18 +++++-------- drivers/video/fbdev/xen-fbfront.c | 20 +++++++------- drivers/xen/balloon.c | 2 +- drivers/xen/biomerge.c | 6 ++--- drivers/xen/events/events_base.c | 2 +- drivers/xen/events/events_fifo.c | 4 +-- drivers/xen/gntalloc.c | 3 ++- drivers/xen/manage.c | 2 +- drivers/xen/privcmd.c | 44 +++++++++++++++----------= ----- drivers/xen/swiotlb-xen.c | 16 +++++------ drivers/xen/tmem.c | 21 +++++---------- drivers/xen/xenbus/xenbus_client.c | 2 +- drivers/xen/xenbus/xenbus_dev_backend.c | 2 +- drivers/xen/xenbus/xenbus_probe.c | 8 +++--- drivers/xen/xlate_mmu.c | 18 ++++++------- include/uapi/xen/privcmd.h | 4 +++ include/xen/page.h | 4 +-- include/xen/xen-ops.h | 10 +++---- 33 files changed, 210 insertions(+), 214 deletions(-) --=20 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html