)]}'
{
  "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": "002547b4f86c27bfac5bae344b723d250857be6b",
      "tree": "31fa2cc67091f7db95853ae089dee0261a5e98b5",
      "parents": [
        "60b6cf6851d0e12956c109987966f2e7417ce212"
      ],
      "author": {
        "name": "Russell King",
        "email": "rmk@dyn-67.arm.linux.org.uk",
        "time": "Tue Jun 20 20:46:52 2006 +0100"
      },
      "committer": {
        "name": "Russell King",
        "email": "rmk+kernel@arm.linux.org.uk",
        "time": "Wed Jun 28 17:59:45 2006 +0100"
      },
      "message": "[ARM] nommu: adjust headers for !MMU ARM systems\n\nMajorily based on Hyok Choi\u0027s patches, this fixes up the asm-arm\nheader files for mmuless systems.  Over and above Hyok\u0027s patches:\n\n- nommu.h merged into mmu.h (it\u0027s only a structure)\n- nommu_context.h is essentially the same as mmu_context.h, but\n  without the MM switching code.\n\nso there\u0027s no point having separate files.  Also, in memory.h,\nthere\u0027s no point #ifndef\u0027ing PHYS_OFFSET and END_MEM - both\nCONFIG_DRAM_BASE and CONFIG_DRAM_SIZE will always be set by the\nconfiguration scripts.\n\nOther files have minor formatting changes, but are essentially\nthe same.  Hyok\u0027s original patches were signed off thusly:\n\n  Signed-off-by: Hyok S. Choi \u003chyok.choi@samsung.com\u003e\n\nSigned-off-by: Russell King \u003crmk+kernel@arm.linux.org.uk\u003e\n"
    },
    {
      "commit": "74945c8616a50074277e18641baaae7464006766",
      "tree": "b74a005fd0c38b2582783378321bf324545f3346",
      "parents": [
        "0f44ba1d1e67201c0c58af26eb441fa7014c89ec"
      ],
      "author": {
        "name": "Russell King",
        "email": "rmk@dyn-67.arm.linux.org.uk",
        "time": "Thu Mar 16 14:44:36 2006 +0000"
      },
      "committer": {
        "name": "Russell King",
        "email": "rmk+kernel@arm.linux.org.uk",
        "time": "Tue Mar 21 22:03:25 2006 +0000"
      },
      "message": "[ARM] nommu: Move hardware page table definitions to pgtable-hwdef.h\n\nMove the hardware PMD and PTE page table definitions from pgtable.h\ninto pgtable-hwdef.h, and include pgtable-hwdef.h as necessary.\n\nSigned-off-by: Russell King \u003crmk+kernel@arm.linux.org.uk\u003e\n"
    },
    {
      "commit": "bdf042486a01aefaf29d74be1b4526daa70a5f0f",
      "tree": "dd6af0dacd88d98eda7cd9ed80b89deec7157d7f",
      "parents": [
        "e00d349e7781a92cf35b242259c9e5341a9661bb"
      ],
      "author": {
        "name": "Russell King",
        "email": "rmk@dyn-67.arm.linux.org.uk",
        "time": "Wed Jun 22 20:58:29 2005 +0100"
      },
      "committer": {
        "name": "Russell King",
        "email": "rmk@dyn-67.arm.linux.org.uk",
        "time": "Wed Jun 22 20:58:29 2005 +0100"
      },
      "message": "[PATCH] ARM: Factor out common pmd_populate functionality\n\nBoth pmd_populate variants set two pmd entries before\nensuring that they are flushed from the cache.  Separate\nthis functionality into __pmd_populate().\n\nSigned-off-by: Russell King \u003crmk+kernel@arm.linux.org.uk\u003e\n"
    },
    {
      "commit": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
      "tree": "0bba044c4ce775e45a88a51686b5d9f90697ea9d",
      "parents": [],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@ppc970.osdl.org",
        "time": "Sat Apr 16 15:20:36 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@ppc970.osdl.org",
        "time": "Sat Apr 16 15:20:36 2005 -0700"
      },
      "message": "Linux-2.6.12-rc2\n\nInitial git repository build. I\u0027m not bothering with the full history,\neven though we have it. We can create a separate \"historical\" git\narchive of that later if we want to, and in the meantime it\u0027s about\n3.2GB when imported into git - space that would just make the early\ngit days unnecessarily complicated, when we don\u0027t have a lot of good\ninfrastructure for it.\n\nLet it rip!\n"
    }
  ]
}