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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-12-15 14:52:16 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-12-15 14:52:16 -0300
commit8d91c1e411f55d7ea91b1183a2e9f8088fb4d5be (patch)
treee9891aa6c295060d065adffd610c4f49ecf884f3 /arch/arm/include/asm/xen
parenta71852147516bc1cb5b0b3cbd13639bfd4022dc8 (diff)
Linux-libre 4.3.2-gnu
Diffstat (limited to 'arch/arm/include/asm/xen')
-rw-r--r--arch/arm/include/asm/xen/events.h6
-rw-r--r--arch/arm/include/asm/xen/page.h44
2 files changed, 28 insertions, 22 deletions
diff --git a/arch/arm/include/asm/xen/events.h b/arch/arm/include/asm/xen/events.h
index 8b1f37bfe..71e473d05 100644
--- a/arch/arm/include/asm/xen/events.h
+++ b/arch/arm/include/asm/xen/events.h
@@ -20,4 +20,10 @@ static inline int xen_irqs_disabled(struct pt_regs *regs)
atomic64_t, \
counter), (val))
+/* Rebind event channel is supported by default */
+static inline bool xen_support_evtchn_rebind(void)
+{
+ return true;
+}
+
#endif /* _ASM_ARM_XEN_EVENTS_H */
diff --git a/arch/arm/include/asm/xen/page.h b/arch/arm/include/asm/xen/page.h
index 1bee8ca12..127956353 100644
--- a/arch/arm/include/asm/xen/page.h
+++ b/arch/arm/include/asm/xen/page.h
@@ -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;
@@ -47,33 +59,21 @@ 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)
-static inline xmaddr_t phys_to_machine(xpaddr_t phys)
-{
- unsigned offset = phys.paddr & ~PAGE_MASK;
- return XMADDR(PFN_PHYS(pfn_to_mfn(PFN_DOWN(phys.paddr))) | offset);
-}
-
-static inline xpaddr_t machine_to_phys(xmaddr_t machine)
-{
- unsigned offset = machine.maddr & ~PAGE_MASK;
- return XPADDR(PFN_PHYS(mfn_to_pfn(PFN_DOWN(machine.maddr))) | offset);
-}
-/* VIRT <-> MACHINE conversion */
-#define virt_to_machine(v) (phys_to_machine(XPADDR(__pa(v))))
-#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)
{
- /* TODO: assuming it is mapped in the kernel 1:1 */
- return virt_to_machine(vaddr);
+ BUG();
}
/* TODO: this shouldn't be here but it is because the frontend drivers
@@ -108,7 +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 */