)]}' { "log": [ { "commit": "2f569afd9ced9ebec9a6eb3dbf6f83429be0a7b4", "tree": "23a31763887d9505e62e9d7cc8ec2fa4b86bd380", "parents": [ "13214adf738abc92b0a00c0763fd3be79eebaa7c" ], "author": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Fri Feb 08 04:22:04 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:42 2008 -0800" }, "message": "CONFIG_HIGHPTE vs. sub-page page tables.\n\nBackground: I\u0027ve implemented 1K/2K page tables for s390. These sub-page\npage tables are required to properly support the s390 virtualization\ninstruction with KVM. The SIE instruction requires that the page tables\nhave 256 page table entries (pte) followed by 256 page status table entries\n(pgste). The pgstes are only required if the process is using the SIE\ninstruction. The pgstes are updated by the hardware and by the hypervisor\nfor a number of reasons, one of them is dirty and reference bit tracking.\nTo avoid wasting memory the standard pte table allocation should return\n1K/2K (31/64 bit) and 2K/4K if the process is using SIE.\n\nProblem: Page size on s390 is 4K, page table size is 1K or 2K. That means\nthe s390 version for pte_alloc_one cannot return a pointer to a struct\npage. Trouble is that with the CONFIG_HIGHPTE feature on x86 pte_alloc_one\ncannot return a pointer to a pte either, since that would require more than\n32 bit for the return value of pte_alloc_one (and the pte * would not be\naccessible since its not kmapped).\n\nSolution: The only solution I found to this dilemma is a new typedef: a\npgtable_t. For s390 pgtable_t will be a (pte *) - to be introduced with a\nlater patch. For everybody else it will be a (struct page *). The\nadditional problem with the initialization of the ptl lock and the\nNR_PAGETABLE accounting is solved with a constructor pgtable_page_ctor and\na destructor pgtable_page_dtor. The page table allocation and free\nfunctions need to call these two whenever a page table page is allocated or\nfreed. pmd_populate will get a pgtable_t instead of a struct page pointer.\n To get the pgtable_t back from a pmd entry that has been installed with\npmd_populate a new function pmd_pgtable is added. It replaces the pmd_page\ncall in free_pte_range and apply_to_pte_range.\n\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5e5419734c8719cbc01af959ad9c0844002c0df5", "tree": "a075dca3f719946689efa0245464855cbf2a20ce", "parents": [ "9f8f2172537de7af0b0fbd33502d18d52b1339bc" ], "author": { "name": "Benjamin Herrenschmidt", "email": "benh@kernel.crashing.org", "time": "Mon Feb 04 22:29:14 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:18 2008 -0800" }, "message": "add mm argument to pte/pmd/pud/pgd_free\n\n(with Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e)\n\nThe pgd/pud/pmd/pte page table allocation functions get a mm_struct pointer as\nfirst argument. The free functions do not get the mm_struct argument. This\nis 1) asymmetrical and 2) to do mm related page table allocations the mm\nargument is needed on the free function as well.\n\n[kamalesh@linux.vnet.ibm.com: i386 fix]\n[akpm@linux-foundation.org: coding-syle fixes]\nSigned-off-by: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nSigned-off-by: Kamalesh Babulal \u003ckamalesh@linux.vnet.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e7f3bac95e0bdfd520e065c4a29aad46190fcc99", "tree": "c793a75643f183ccb083f1f309925a75c941df3f", "parents": [ "5221b34edfd05ac35c077e071095cf853325320f" ], "author": { "name": "Haavard Skinnemoen", "email": "hskinnemoen@atmel.com", "time": "Fri Aug 03 13:29:01 2007 +0200" }, "committer": { "name": "Haavard Skinnemoen", "email": "hskinnemoen@atmel.com", "time": "Wed Aug 15 16:36:56 2007 +0200" }, "message": "[AVR32] Simplify pte_alloc_one{,_kernel}\n\nThere\u0027s really no need to retry an allocation with __GFP_REPEAT set.\nAlso, use get_zeroed_page() and __GFP_ZERO to eliminate the extra call\nto clear_page() afterwards.\n\nSigned-off-by: Haavard Skinnemoen \u003chskinnemoen@atmel.com\u003e\n" }, { "commit": "5221b34edfd05ac35c077e071095cf853325320f", "tree": "dbbc9d2354c55dc44d96e7f94c7ac10c9e2c3f7a", "parents": [ "54bb69e25016a7b11d83f03feafafdfe2b4d0859" ], "author": { "name": "Mariusz Kozlowski", "email": "m.kozlowski@tuxland.pl", "time": "Tue Jul 31 23:41:00 2007 +0200" }, "committer": { "name": "Haavard Skinnemoen", "email": "hskinnemoen@atmel.com", "time": "Wed Aug 15 16:36:56 2007 +0200" }, "message": "include/asm-avr32/pgalloc.h: kmalloc + memset conversion to kcalloc\n\nSigned-off-by: Mariusz Kozlowski \u003cm.kozlowski@tuxland.pl\u003e\nSigned-off-by: Haavard Skinnemoen \u003chskinnemoen@atmel.com\u003e\n" }, { "commit": "5cbded585d129d0226cb48ac4202b253c781be26", "tree": "fb24edc194a57ee81a3bf8a4dd8a95030dd0ad22", "parents": [ "0743b86800cf1dfbf96df4a438938127bbe4476c" ], "author": { "name": "Robert P. J. Day", "email": "rpjday@mindspring.com", "time": "Wed Dec 13 00:35:56 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Wed Dec 13 09:05:58 2006 -0800" }, "message": "[PATCH] getting rid of all casts of k[cmz]alloc() calls\n\nRun this:\n\n\t#!/bin/sh\n\tfor f in $(grep -Erl \"\\([^\\)]*\\) *k[cmz]alloc\" *) ; do\n\t echo \"De-casting $f...\"\n\t perl -pi -e \"s/ ?\u003d ?\\([^\\)]*\\) *(k[cmz]alloc) *\\(/ \u003d \\1\\(/\" $f\n\tdone\n\nAnd then go through and reinstate those cases where code is casting pointers\nto non-pointers.\n\nAnd then drop a few hunks which conflicted with outstanding work.\n\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e, Ian Molton \u003cspyro@f2s.com\u003e\nCc: Mikael Starvik \u003cstarvik@axis.com\u003e\nCc: Yoshinori Sato \u003cysato@users.sourceforge.jp\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: Geert Uytterhoeven \u003cgeert@linux-m68k.org\u003e\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Kyle McMartin \u003ckyle@mcmartin.ca\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Jeff Dike \u003cjdike@addtoit.com\u003e\nCc: Greg KH \u003cgreg@kroah.com\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nCc: Paul Fulghum \u003cpaulkf@microgate.com\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nCc: Karsten Keil \u003ckkeil@suse.de\u003e\nCc: Mauro Carvalho Chehab \u003cmchehab@infradead.org\u003e\nCc: Jeff Garzik \u003cjeff@garzik.org\u003e\nCc: James Bottomley \u003cJames.Bottomley@steeleye.com\u003e\nCc: Ian Kent \u003craven@themaw.net\u003e\nCc: Steven French \u003csfrench@us.ibm.com\u003e\nCc: David Woodhouse \u003cdwmw2@infradead.org\u003e\nCc: Neil Brown \u003cneilb@cse.unsw.edu.au\u003e\nCc: Jaroslav Kysela \u003cperex@suse.cz\u003e\nCc: Takashi Iwai \u003ctiwai@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "5f97f7f9400de47ae837170bb274e90ad3934386", "tree": "514451e6dc6b46253293a00035d375e77b1c65ed", "parents": [ "53e62d3aaa60590d4a69b4e07c29f448b5151047" ], "author": { "name": "Haavard Skinnemoen", "email": "hskinnemoen@atmel.com", "time": "Mon Sep 25 23:32:13 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:54 2006 -0700" }, "message": "[PATCH] avr32 architecture\n\nThis adds support for the Atmel AVR32 architecture as well as the AT32AP7000\nCPU and the AT32STK1000 development board.\n\nAVR32 is a new high-performance 32-bit RISC microprocessor core, designed for\ncost-sensitive embedded applications, with particular emphasis on low power\nconsumption and high code density. The AVR32 architecture is not binary\ncompatible with earlier 8-bit AVR architectures.\n\nThe AVR32 architecture, including the instruction set, is described by the\nAVR32 Architecture Manual, available from\n\nhttp://www.atmel.com/dyn/resources/prod_documents/doc32000.pdf\n\nThe Atmel AT32AP7000 is the first CPU implementing the AVR32 architecture. It\nfeatures a 7-stage pipeline, 16KB instruction and data caches and a full\nMemory Management Unit. It also comes with a large set of integrated\nperipherals, many of which are shared with the AT91 ARM-based controllers from\nAtmel.\n\nFull data sheet is available from\n\nhttp://www.atmel.com/dyn/resources/prod_documents/doc32003.pdf\n\nwhile the CPU core implementation including caches and MMU is documented by\nthe AVR32 AP Technical Reference, available from\n\nhttp://www.atmel.com/dyn/resources/prod_documents/doc32001.pdf\n\nInformation about the AT32STK1000 development board can be found at\n\nhttp://www.atmel.com/dyn/products/tools_card.asp?tool_id\u003d3918\n\nincluding a BSP CD image with an earlier version of this patch, development\ntools (binaries and source/patches) and a root filesystem image suitable for\nbooting from SD card.\n\nAlternatively, there\u0027s a preliminary \"getting started\" guide available at\nhttp://avr32linux.org/twiki/bin/view/Main/GettingStarted which provides links\nto the sources and patches you will need in order to set up a cross-compiling\nenvironment for avr32-linux.\n\nThis patch, as well as the other patches included with the BSP and the\ntoolchain patches, is actively supported by Atmel Corporation.\n\n[dmccr@us.ibm.com: Fix more pxx_page macro locations]\n[bunk@stusta.de: fix `make defconfig\u0027]\nSigned-off-by: Haavard Skinnemoen \u003chskinnemoen@atmel.com\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Dave McCracken \u003cdmccr@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" } ] }