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xen: MFN/GFN/BFN terminology changes for 4.3-rc0

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- Use the correct GFN/BFN terms more consistently.
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Merge tag 'for-linus-4.3-rc0b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen terminology fixes from David Vrabel:
 "Use the correct GFN/BFN terms more consistently"

* tag 'for-linus-4.3-rc0b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/xenbus: Rename the variable xen_store_mfn to xen_store_gfn
  xen/privcmd: Further s/MFN/GFN/ clean-up
  hvc/xen: Further s/MFN/GFN clean-up
  video/xen-fbfront: Further s/MFN/GFN clean-up
  xen/tmem: Use xen_page_to_gfn rather than pfn_to_gfn
  xen: Use correctly the Xen memory terminologies
  arm/xen: implement correctly pfn_to_mfn
  xen: Make clear that swiotlb and biomerge are dealing with DMA address
This commit is contained in:
Linus Torvalds 2015-09-10 16:21:11 -07:00
commit 06ab838c20
29 changed files with 198 additions and 158 deletions
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28
arch/arm/include/asm/xen/page.h
View file

@ -34,7 +34,19 @@ typedef struct xpaddr {
unsigned long __pfn_to_mfn(unsigned long pfn);
extern struct rb_root phys_to_mach;
static inline unsigned long pfn_to_mfn(unsigned long pfn)
/* Pseudo-physical <-> Guest conversion */
static inline unsigned long pfn_to_gfn(unsigned long pfn)
{
return pfn;
}
static inline unsigned long gfn_to_pfn(unsigned long gfn)
{
return gfn;
}
/* Pseudo-physical <-> BUS conversion */
static inline unsigned long pfn_to_bfn(unsigned long pfn)
{
unsigned long mfn;
@ -47,16 +59,16 @@ static inline unsigned long pfn_to_mfn(unsigned long pfn)
return pfn;
}
static inline unsigned long mfn_to_pfn(unsigned long mfn)
static inline unsigned long bfn_to_pfn(unsigned long bfn)
{
return mfn;
return bfn;
}
#define mfn_to_local_pfn(mfn) mfn_to_pfn(mfn)
#define bfn_to_local_pfn(bfn) bfn_to_pfn(bfn)
/* VIRT <-> MACHINE conversion */
#define virt_to_mfn(v) (pfn_to_mfn(virt_to_pfn(v)))
#define mfn_to_virt(m) (__va(mfn_to_pfn(m) << PAGE_SHIFT))
/* VIRT <-> GUEST conversion */
#define virt_to_gfn(v) (pfn_to_gfn(virt_to_pfn(v)))
#define gfn_to_virt(m) (__va(gfn_to_pfn(m) << PAGE_SHIFT))
/* Only used in PV code. But ARM guests are always HVM. */
static inline xmaddr_t arbitrary_virt_to_machine(void *vaddr)
@ -96,7 +108,7 @@ static inline bool set_phys_to_machine(unsigned long pfn, unsigned long mfn)
bool xen_arch_need_swiotlb(struct device *dev,
unsigned long pfn,
unsigned long mfn);
unsigned long bfn);
unsigned long xen_get_swiotlb_free_pages(unsigned int order);
#endif /* _ASM_ARM_XEN_PAGE_H */