On Tue, May 14, 2024 at 04:04:40PM +0200, Björn Töpel wrote:
> From: Björn Töpel <bjorn@xxxxxxxxxxxx>
>
> Prepare for memory hotplugging support by changing from __init to
> __meminit for the page table functions that are used by the upcoming
> architecture specific callbacks.
>
> Changing the __init attribute to __meminit, avoids that the functions
> are removed after init. The __meminit attribute makes sure the
> functions are kept in the kernel text post init, but only if memory
> hotplugging is enabled for the build.
>
> Also, make sure that the altmap parameter is properly passed on to
> vmemmap_populate_hugepages().
>
> Signed-off-by: Björn Töpel <bjorn@xxxxxxxxxxxx>
Reviewed-by: Oscar Salvador <osalvador@xxxxxxx>
> +static void __meminit create_linear_mapping_range(phys_addr_t start, phys_addr_t end,
> + uintptr_t fixed_map_size)
> {
> phys_addr_t pa;
> uintptr_t va, map_size;
> @@ -1435,7 +1429,7 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node,
> * memory hotplug, we are not able to update all the page tables with
> * the new PMDs.
> */
> - return vmemmap_populate_hugepages(start, end, node, NULL);
> + return vmemmap_populate_hugepages(start, end, node, altmap);
I would have put this into a separate patch.
--
Oscar Salvador
SUSE Labs
