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xpmem: support large page

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1. try to use as large page as possible on attach
2. pre-map resident remote pages on attach

Change-Id: I5580682a4199e94085a9bad9ce3958a0f14cdcea
This commit is contained in:
Yoshihisa Morizumi
2021-01-08 16:56:32 +09:00
committed by Masamichi Takagi
parent 3aaa5350f0
commit d2db639853
68 changed files with 4878 additions and 244 deletions
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6
kernel/mem.c
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@ -66,6 +66,7 @@ int anon_on_demand = 0;
#ifdef ENABLE_FUGAKU_HACKS
int hugetlbfs_on_demand;
#endif
int xpmem_page_in_remote_on_attach;
int sysctl_overcommit_memory = OVERCOMMIT_ALWAYS;
static struct ihk_mc_pa_ops *pa_ops;
@ -2144,6 +2145,11 @@ void mem_init(void)
kprintf("Demand paging on ANONYMOUS mappings enabled.\n");
anon_on_demand = 1;
}
if (find_command_line("xpmem_page_in_remote_on_attach")) {
kprintf("Demand paging on XPMEM remote mappings enabled.\n");
xpmem_page_in_remote_on_attach = 1;
}
#ifdef ENABLE_FUGAKU_HACKS
if (find_command_line("hugetlbfs_on_demand")) {