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eeb8fdfcf0
The memory hot-plug and resource management code needs to know the largest address which can fit in the linear map, so set PHYSMEM_END for that purpose. This fixes a crash at boot when amdgpu tries to create DEVICE_PRIVATE_MEMORY and is given a physical address by the resource management code which is outside the range which can have a `struct page` | Unable to handle kernel paging request at virtual address 000001ffa6000034 | user pgtable: 4k pages, 48-bit VAs, pgdp=000008000287c000 | [000001ffa6000034] pgd=0000000000000000, p4d=0000000000000000 | Call trace: | __init_zone_device_page.constprop.0+0x2c/0xa8 | memmap_init_zone_device+0xf0/0x210 | pagemap_range+0x1e0/0x410 | memremap_pages+0x18c/0x2e0 | devm_memremap_pages+0x30/0x90 | kgd2kfd_init_zone_device+0xf0/0x200 [amdgpu] | amdgpu_device_ip_init+0x674/0x888 [amdgpu] | amdgpu_device_init+0x7a4/0xea0 [amdgpu] | amdgpu_driver_load_kms+0x28/0x1c0 [amdgpu] | amdgpu_pci_probe+0x1a0/0x560 [amdgpu] Signed-off-by: D Scott Phillips <scott@os.amperecomputing.com> Link: https://lore.kernel.org/r/20240903164532.3874988-1-scott@os.amperecomputing.com Signed-off-by: Will Deacon <will@kernel.org> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.