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xpmem: fix mapping of attachment and segment

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* Mapping attached part of segment is done at attach time instead of
  make time to work with runtimes (e.g. OpenMPI) xpmem_make-ing the
  entire user-space
* Mapping attached part of segment at attach time can be turned off by
  specifying xpmem_remote_on_demand in kernel argument
* Mapping attachment chooses appropriate page-sizes, i.e., largest
  allowed by memory range and segment page boundary

Fixes: a8696d8 "xpmem: Support large page attachment"
Change-Id: I44663865204036520e5f62fe22b9134ee4629f9b
This commit is contained in:
Masamichi Takagi
2020-05-12 13:17:46 +09:00
parent d370e9241f
commit a5fcc91656
43 changed files with 2876 additions and 285 deletions
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kernel/include/xpmem.h
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@@ -31,7 +31,7 @@ int xpmem_update_process_page_table(struct process_vm *vm,
struct vm_range *vmr);
struct xpmem_attachment {
mcs_rwlock_lock_t at_lock; /* att lock */
ihk_rwspinlock_t at_lock; /* att lock */
unsigned long vaddr; /* starting address of seg attached */
unsigned long at_vaddr; /* address where seg is attached */
size_t at_size; /* size of seg attachment */