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make checking write-combine arch-dependent

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Change-Id: I4c0fca7d34e69b4774141e115b8ebc03c5c1e8b3
Fujitsu: POSTK_DEBUG_ARCH_DEP_12
Refs: #1355
This commit is contained in:
Ken Sato
2019-09-09 15:04:42 +09:00
parent 5d6715078f
commit beac6c3e80
15 changed files with 495 additions and 23 deletions
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7
kernel/devobj.c
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@@ -232,14 +232,7 @@ static int devobj_get_page(struct memobj *memobj, off_t off, int p2align, uintpt
dkprintf("devobj_get_page(%p %lx,%lx,%d):PFN_PRESENT before %#lx\n", memobj, obj->handle, off, p2align, pfn);
attr = pfn & ~PFN_PFN;
/* TODO: do an arch dependent PTE to mapping flag conversion
* instead of this inline check, also, we rely on having the
* same PAT config as Linux here.. */
#ifdef POSTK_DEBUG_ARCH_DEP_12
if (pfn_is_write_combined(pfn)) {
#else /* POSTK_DEBUG_ARCH_DEP_12 */
if ((pfn & PFL1_PWT) && !(pfn & PFL1_PCD)) {
#endif /* POSTK_DEBUG_ARCH_DEP_12 */
*flag |= VR_WRITE_COMBINED;
}