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{
    "id": 640713,
    "url": "http://patchwork.ozlabs.org/api/patches/640713/?format=api",
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    "project": {
        "id": 2,
        "url": "http://patchwork.ozlabs.org/api/projects/2/?format=api",
        "name": "Linux PPC development",
        "link_name": "linuxppc-dev",
        "list_id": "linuxppc-dev.lists.ozlabs.org",
        "list_email": "linuxppc-dev@lists.ozlabs.org",
        "web_url": "https://github.com/linuxppc/wiki/wiki",
        "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git",
        "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/",
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    "msgid": "<4863e2f8235.599ebfcf@auth.smtp.1and1.co.uk>",
    "list_archive_url": "https://lore.kernel.org/linuxppc-dev/4863e2f8235.599ebfcf@auth.smtp.1and1.co.uk/",
    "date": "2016-06-26T17:42:11",
    "name": "Proposed: Patch to fix boot on PA6T",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": true,
    "hash": "94e6b18b37147ef9eb8b718c4b75e486403a2686",
    "submitter": {
        "id": 69199,
        "url": "http://patchwork.ozlabs.org/api/people/69199/?format=api",
        "name": "Darren Stevens",
        "email": "darren@stevens-zone.net"
    },
    "delegate": null,
    "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/4863e2f8235.599ebfcf@auth.smtp.1and1.co.uk/mbox/",
    "series": [],
    "comments": "http://patchwork.ozlabs.org/api/patches/640713/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/640713/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org>",
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        "Received": [
            "from lists.ozlabs.org (lists.ozlabs.org [103.22.144.68])\n\t(using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3rd1H01thwz9sRZ\n\tfor <patchwork-incoming@ozlabs.org>;\n\tMon, 27 Jun 2016 04:45:48 +1000 (AEST)",
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        ],
        "From": "Darren Stevens <darren@stevens-zone.net>",
        "To": "linuxppc-dev@lists.ozlabs.org",
        "Date": "Sun, 26 Jun 2016 18:42:11 +0100 (BST)",
        "Message-ID": "<4863e2f8235.599ebfcf@auth.smtp.1and1.co.uk>",
        "User-Agent": "YAM/2.9p1 (AmigaOS4; PPC; rv:20140418r7798)",
        "Subject": "Proposed: Patch to fix boot on PA6T",
        "MIME-Version": "1.0",
        "Content-type": "multipart/mixed; boundary=\"--=_BOUNDARY.6d401b301879572c.5f\"",
        "X-Provags-ID": "V03:K0:ts9caAAeT1jpDEu2UJbFtbThBF6jrQUFOwLOg1Fat2NiJ/YA/BR\n\tx1qgNNiGnB6PbQw4C6SETCNGWlG+N9O7+9g8F9wFCqZhhjLrcSEJnPkSt7sm2Pzjtajd2db\n\tvgSHAvAs3MkBe1zG1ed/R40d0SgDwrYh9u8uqu5wfd4NERcFzqMi7isTaGo/eZWcGR2+e3l\n\tS85fZ6jF1ZjOnibg1rJPQ==",
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        "Cc": "Pat Wall <pjwall@mac.com>, matthew@a-eon.com, aperez@alexperez.com,\n\t\"R.T.Dickinson\" <rtd2@xtra.co.nz>,\n\tChristian Zigotzky <chzigotzky@xenosoft.de>",
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    },
    "content": "Hello All,\n\n    commit d6a9996e84ac4beb7713e9485f4563e100a9b03e\n    powerpc/mm: vmalloc abstraction in preparation for radix\n\n    This commit introduced variables for some linux kernel addresses that had\nbefore\n    been constants, unfortunately this stopped PaSemi PA6T systems(*) from\nbooting as\n    they call ioremap to map SoC registers before the mmu is initialised. The\nattached\n    patch adds a hard-coded init of pci_io_base to the pas_init_early()\nfunction which\n    which allows the kernel to boot normally.\n\n    The value will be harmlessly set again once pci starts up.\n\n    (*) At the moment this has only been tested on an AmigaOneX1000, but I\nexpect PaSemi\n    reference systems to have been affected in the same way.\n\nKind regards\nDarren",
    "diff": "diff --git a/arch/powerpc/platforms/pasemi/setup.c b/arch/powerpc/platforms/pasemi/setup.c\nindex d71b2c7..6b8d2ab 100644\n--- a/arch/powerpc/platforms/pasemi/setup.c\n+++ b/arch/powerpc/platforms/pasemi/setup.c\n@@ -61,6 +61,7 @@ static struct mce_regs mce_regs[MAX_MCE_REGS];\n static int num_mce_regs;\n static int nmi_virq = NO_IRQ;\n \n+extern unsigned long pci_io_base;\n \n static void pas_restart(char *cmd)\n {\n@@ -341,6 +342,10 @@ out:\n \n static void __init pas_init_early(void)\n {\n+\t/* Initialise the IO pointer so we don't crash on boot */\n+\n+\tpci_io_base = (H_KERN_VIRT_START + (H_KERN_VIRT_SIZE >> 1));\n+\n \tiommu_init_early_pasemi();\n }\n \n",
    "prefixes": []
}