Add arch-specific macro SFBUF_PHYS_DMAP(), which should translate the
physical address of the page to direct map address, in case SFBUF_OPTIONAL_DIRECT_MAP returns true. The case of PowerPC AIM 64bit, where the page physical address is identical to the direct map address, is accidental. Reviewed by: alc Sponsored by: The FreeBSD Foundation
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=270201
@ -210,5 +210,6 @@ struct pmap_physseg {
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#define SFBUF
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#define SFBUF_NOMD
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#define SFBUF_OPTIONAL_DIRECT_MAP hw_direct_map
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#define SFBUF_PHYS_DMAP(x) (x)
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#endif /* _MACHINE_VMPARAM_H_ */
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@ -113,7 +113,7 @@ sf_buf_kva(struct sf_buf *sf)
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{
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#ifdef SFBUF_OPTIONAL_DIRECT_MAP
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if (SFBUF_OPTIONAL_DIRECT_MAP)
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return (VM_PAGE_TO_PHYS((vm_page_t)sf));
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return (SFBUF_PHYS_DMAP(VM_PAGE_TO_PHYS((vm_page_t)sf)));
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#endif
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return (sf->kva);
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