)]}'
{
  "log": [
    {
      "commit": "04a85d1234d7e1682a612565e663e6b760918643",
      "tree": "62acf7f52104c71748e6d2884d0389c146b6e6bf",
      "parents": [
        "e4031d52c57b17c76bbdb15fcf1a32a9f87d9756"
      ],
      "author": {
        "name": "Sonny Rao",
        "email": "sonnyrao@us.ibm.com",
        "time": "Thu Jun 18 15:13:04 2009 +0000"
      },
      "committer": {
        "name": "Benjamin Herrenschmidt",
        "email": "benh@kernel.crashing.org",
        "time": "Fri Jun 26 14:37:26 2009 +1000"
      },
      "message": "powerpc/BSR: Fix BSR to allow mmap of small BSR on 64k kernel\n\nOn Mon, Nov 17, 2008 at 01:26:13AM -0600, Sonny Rao wrote:\n\u003e On Fri, Nov 07, 2008 at 04:28:29PM +1100, Paul Mackerras wrote:\n\u003e \u003e Sonny Rao writes:\n\u003e \u003e\n\u003e \u003e \u003e Fix the BSR driver to allow small BSR devices, which are limited to a\n\u003e \u003e \u003e single 4k space, on a 64k page kernel.  Previously the driver would\n\u003e \u003e \u003e reject the mmap since the size was smaller than PAGESIZE (or because\n\u003e \u003e \u003e the size was greater than the size of the device).  Now, we check for\n\u003e \u003e \u003e this case use remap_4k_pfn(). Also, take out code to set vm_flags,\n\u003e \u003e \u003e as the remap_pfn functions will do this for us.\n\u003e \u003e\n\u003e \u003e Thanks.\n\u003e \u003e\n\u003e \u003e Do we know that the BSR size will always be 4k if it\u0027s not a multiple\n\u003e \u003e of 64k?  Is it possible that we could get 8k, 16k or 32k or BSRs?\n\u003e \u003e If it is possible, what does the user need to be able to do?  Do they\n\u003e \u003e just want to map 4k, or might then want to map the whole thing?\n\u003e\n\u003e\n\u003e Hi Paul, I took a look at changing the driver to reject a request for\n\u003e mapping more than a single 4k page, however the only indication we get\n\u003e of the requested size in the mmap function is the vma size, and this\n\u003e is always one page at minimum.  So, it\u0027s not possible to determine if\n\u003e the user wants one 4k page or more.  As I noted in my first response,\n\u003e there is only one case where this is even possible and I don\u0027t think\n\u003e it is a significant concern.\n\u003e\n\u003e I did notice that I left out the check to see if the user is trying to\n\u003e map more than the device length, so I fixed that.  Here\u0027s the revised\n\u003e patch.\n\nAlright, I\u0027ve reworked this now so that if we get one of these cases\nwhere there\u0027s a bsr that\u0027s \u003e 4k and \u003c 64k on a 64k kernel we\u0027ll only\nadvertise that it is a 4k BSR to userspace.  I think this is the best\nsolution since user programs are only supposed to look at sysfs to\ndetermine how much can be mapped, and libbsr does this as well.\n\nPlease consider for 2.6.31 as a fix, thanks.\n\nSigned-off-by: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\n"
    },
    {
      "commit": "e4031d52c57b17c76bbdb15fcf1a32a9f87d9756",
      "tree": "ec50f6143d2ca15cdd4e4a4bdb8ca9ee311450b7",
      "parents": [
        "4a5cbf17c49a6024a6d7baf03efdffb8ed252bb1"
      ],
      "author": {
        "name": "Sonny Rao",
        "email": "sonnyrao@us.ibm.com",
        "time": "Thu Jun 18 15:14:36 2009 +0000"
      },
      "committer": {
        "name": "Benjamin Herrenschmidt",
        "email": "benh@kernel.crashing.org",
        "time": "Fri Jun 26 14:37:26 2009 +1000"
      },
      "message": "powerpc/BSR: add 4096 byte BSR size\n\nAdd a 4096 byte BSR size which will be used on new machines.  Also, remove\nthe warning when we run into an unknown size, as this can spam the kernel\nlog excessively.\n\nSigned-off-by: Sonny Rao \u003csonnyrao@us.ibm.com\u003e\nSigned-off-by: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\n"
    },
    {
      "commit": "27157a70246c802a5e31996fdc75c7f2a1e548e3",
      "tree": "49dc45c5957f55c2fb3c2d7c160366da1fbad407",
      "parents": [
        "b04f376151d17cb7cad48c932ba516622c167b44"
      ],
      "author": {
        "name": "Tobias Klauser",
        "email": "tklauser@distanz.ch",
        "time": "Mon Feb 09 22:01:08 2009 +0100"
      },
      "committer": {
        "name": "Jiri Kosina",
        "email": "jkosina@suse.cz",
        "time": "Mon Mar 30 15:22:02 2009 +0200"
      },
      "message": "trivial: drivers/char/bsr.c: Storage class should be before const qualifier\n\nThe C99 specification states in section 6.11.5:\n\nThe placement of a storage-class specifier other than at the\nbeginning of the declaration specifiers in a declaration is an\nobsolescent feature.\n\nSigned-off-by: Tobias Klauser \u003ctklauser@distanz.ch\u003e\nSigned-off-by: Jiri Kosina \u003cjkosina@suse.cz\u003e\n"
    },
    {
      "commit": "1901515c79f13d9a1913d246b6c0711318dadb4c",
      "tree": "ac8f3bc49fad51aac70690050fec46fe8e3d5e14",
      "parents": [
        "9477e455b4b3ded3e7add8c96d8293105947eaac"
      ],
      "author": {
        "name": "Stephen Rothwell",
        "email": "sfr@canb.auug.org.au",
        "time": "Tue Jan 06 14:28:48 2009 +0000"
      },
      "committer": {
        "name": "Benjamin Herrenschmidt",
        "email": "benh@kernel.crashing.org",
        "time": "Tue Jan 13 14:48:00 2009 +1100"
      },
      "message": "powerpc: Cleanup from l64 to ll64 change: drivers/char\n\nThis is a powerpc specific driver.\n\nSigned-off-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nSigned-off-by: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\n"
    },
    {
      "commit": "a0e2f9f4a2487572803d5a00c7302db30e4c60d3",
      "tree": "91cdfc6ada0f25d0b84944e4abdd9b84e2a0bcb6",
      "parents": [
        "6358d6cb328a772eb6f02c870da61709d539480f"
      ],
      "author": {
        "name": "Sonny Rao",
        "email": "sonnyrao@us.ibm.com",
        "time": "Sun Nov 09 14:15:11 2008 +0000"
      },
      "committer": {
        "name": "Paul Mackerras",
        "email": "paulus@samba.org",
        "time": "Wed Dec 03 21:03:27 2008 +1100"
      },
      "message": "powerpc/BSR: Support multiple OF-node description of BSR\n\nThis adds support for multiple BSR nodes in the OF device tree.\n\nPreviously, the BSR driver only supported a single OF node describing\na BSR.  Apparently when an LPAR is set to use \"all system resources\"\nthe BSR appears as a single node, but when it is handed out in pieces,\neach 8 byte piece gets its own node.  So, this keeps a list of BSR\ndevices instead of the array and includes all nodes.\n\nAlso, this makes the code be more inclusive of what BSR devices we\naccept by only checking compatibility and not the device name property\n(which might change in the future versions of BSR).\n\nSigned-off-by: Sonny Rao \u003csonnyrao@us.ibm.com\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\n"
    },
    {
      "commit": "03457cd455d042c9ee4cc47c1ed4532257980693",
      "tree": "de926d3e839d363f3414c06906a56d601f224e78",
      "parents": [
        "1ff9f542e5f87c299226557ce5e67a402ed4b502"
      ],
      "author": {
        "name": "Greg Kroah-Hartman",
        "email": "gregkh@suse.de",
        "time": "Mon Jul 21 20:03:34 2008 -0700"
      },
      "committer": {
        "name": "Greg Kroah-Hartman",
        "email": "gregkh@suse.de",
        "time": "Thu Oct 16 09:24:42 2008 -0700"
      },
      "message": "device create: char: convert device_create_drvdata to device_create\n\nNow that device_create() has been audited, rename things back to the\noriginal call to be sane.\n\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n\n"
    },
    {
      "commit": "fe9e8d53772b5ea9ccf8ea4e8f0f009a6885eb70",
      "tree": "dad2ae7dfd7726794dd6eb3444bf0c99e582c50c",
      "parents": [
        "b3fcaaa8a6359e9ed623ed4c1d2d48c79eed4648"
      ],
      "author": {
        "name": "Sonny Rao",
        "email": "sonnyrao@linux.vnet.ibm.com",
        "time": "Tue Jul 08 15:45:11 2008 +1000"
      },
      "committer": {
        "name": "Benjamin Herrenschmidt",
        "email": "benh@kernel.crashing.org",
        "time": "Tue Jul 15 12:24:55 2008 +1000"
      },
      "message": "powerpc: Add driver for Barrier Synchronization Register\n\nAdds a character driver for BSR support on IBM POWER systems including\nPower5 and Power6.  The BSR is an optional processor facility not currently\nimplemented by any other processors.  It\u0027s primary purpose is fast large SMP\nsynchronization.  More details on the BSR are in comments to the code which\nfollows.  This patch adds BSR driver to pseries_defconfig.\n\nSigned-off-by: Sonny Rao \u003csonnyrao@linux.vnet.ibm.com\u003e\nSigned-off-by: Joel Schopp \u003cjschopp@austin.ibm.com\u003e\nSigned-off-by: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\n"
    }
  ]
}