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Message-ID: <202411060019.p34zs7ce-lkp@intel.com>
Date: Wed, 6 Nov 2024 00:49:44 +0800
From: kernel test robot <lkp@...el.com>
To: Jiqian Chen <Jiqian.Chen@....com>,
Alex Deucher <alexander.deucher@....com>,
Christian König <christian.koenig@....com>,
Xinhui Pan <Xinhui.Pan@....com>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
amd-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@....com>,
Jiqian Chen <Jiqian.Chen@....com>, Huang Rui <Ray.Huang@....com>
Subject: Re: [PATCH 2/2] drm/amdgpu: Bypass resizing bars for PVH dom0
Hi Jiqian,
kernel test robot noticed the following build errors:
[auto build test ERROR on linus/master]
[also build test ERROR on v6.12-rc6 next-20241105]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Jiqian-Chen/drm-amdgpu-set-passthrough-mode-for-xen-pvh-hvm/20241105-141716
base: linus/master
patch link: https://lore.kernel.org/r/20241105060531.3503788-3-Jiqian.Chen%40amd.com
patch subject: [PATCH 2/2] drm/amdgpu: Bypass resizing bars for PVH dom0
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20241106/202411060019.p34zs7ce-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 639a7ac648f1e50ccd2556e17d401c04f9cce625)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241106/202411060019.p34zs7ce-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411060019.p34zs7ce-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from drivers/gpu/drm/amd/amdgpu/amdgpu_device.c:33:
In file included from include/linux/iommu.h:10:
In file included from include/linux/scatterlist.h:8:
In file included from include/linux/mm.h:2213:
include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
504 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
505 | item];
| ~~~~
include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
511 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
512 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
524 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
525 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c:1542:6: error: call to undeclared function 'xen_initial_domain'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
1542 | if (xen_initial_domain() && xen_pvh_domain())
| ^
>> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c:1542:30: error: call to undeclared function 'xen_pvh_domain'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
1542 | if (xen_initial_domain() && xen_pvh_domain())
| ^
4 warnings and 2 errors generated.
vim +/xen_initial_domain +1542 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
1519
1520 /**
1521 * amdgpu_device_resize_fb_bar - try to resize FB BAR
1522 *
1523 * @adev: amdgpu_device pointer
1524 *
1525 * Try to resize FB BAR to make all VRAM CPU accessible. We try very hard not
1526 * to fail, but if any of the BARs is not accessible after the size we abort
1527 * driver loading by returning -ENODEV.
1528 */
1529 int amdgpu_device_resize_fb_bar(struct amdgpu_device *adev)
1530 {
1531 int rbar_size = pci_rebar_bytes_to_size(adev->gmc.real_vram_size);
1532 struct pci_bus *root;
1533 struct resource *res;
1534 unsigned int i;
1535 u16 cmd;
1536 int r;
1537
1538 if (!IS_ENABLED(CONFIG_PHYS_ADDR_T_64BIT))
1539 return 0;
1540
1541 /* Bypass for PVH dom0 which doesn't support resizable bar */
> 1542 if (xen_initial_domain() && xen_pvh_domain())
1543 return 0;
1544
1545 /* Bypass for VF */
1546 if (amdgpu_sriov_vf(adev))
1547 return 0;
1548
1549 /* PCI_EXT_CAP_ID_VNDR extended capability is located at 0x100 */
1550 if (!pci_find_ext_capability(adev->pdev, PCI_EXT_CAP_ID_VNDR))
1551 DRM_WARN("System can't access extended configuration space, please check!!\n");
1552
1553 /* skip if the bios has already enabled large BAR */
1554 if (adev->gmc.real_vram_size &&
1555 (pci_resource_len(adev->pdev, 0) >= adev->gmc.real_vram_size))
1556 return 0;
1557
1558 /* Check if the root BUS has 64bit memory resources */
1559 root = adev->pdev->bus;
1560 while (root->parent)
1561 root = root->parent;
1562
1563 pci_bus_for_each_resource(root, res, i) {
1564 if (res && res->flags & (IORESOURCE_MEM | IORESOURCE_MEM_64) &&
1565 res->start > 0x100000000ull)
1566 break;
1567 }
1568
1569 /* Trying to resize is pointless without a root hub window above 4GB */
1570 if (!res)
1571 return 0;
1572
1573 /* Limit the BAR size to what is available */
1574 rbar_size = min(fls(pci_rebar_get_possible_sizes(adev->pdev, 0)) - 1,
1575 rbar_size);
1576
1577 /* Disable memory decoding while we change the BAR addresses and size */
1578 pci_read_config_word(adev->pdev, PCI_COMMAND, &cmd);
1579 pci_write_config_word(adev->pdev, PCI_COMMAND,
1580 cmd & ~PCI_COMMAND_MEMORY);
1581
1582 /* Free the VRAM and doorbell BAR, we most likely need to move both. */
1583 amdgpu_doorbell_fini(adev);
1584 if (adev->asic_type >= CHIP_BONAIRE)
1585 pci_release_resource(adev->pdev, 2);
1586
1587 pci_release_resource(adev->pdev, 0);
1588
1589 r = pci_resize_resource(adev->pdev, 0, rbar_size);
1590 if (r == -ENOSPC)
1591 DRM_INFO("Not enough PCI address space for a large BAR.");
1592 else if (r && r != -ENOTSUPP)
1593 DRM_ERROR("Problem resizing BAR0 (%d).", r);
1594
1595 pci_assign_unassigned_bus_resources(adev->pdev->bus);
1596
1597 /* When the doorbell or fb BAR isn't available we have no chance of
1598 * using the device.
1599 */
1600 r = amdgpu_doorbell_init(adev);
1601 if (r || (pci_resource_flags(adev->pdev, 0) & IORESOURCE_UNSET))
1602 return -ENODEV;
1603
1604 pci_write_config_word(adev->pdev, PCI_COMMAND, cmd);
1605
1606 return 0;
1607 }
1608
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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