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| author | Ian Campbell <ian.campbell@citrix.com> | 2013-01-28 16:48:20 +0000 |
|---|---|---|
| committer | Ian Campbell <ian.campbell@citrix.com> | 2013-01-28 16:48:20 +0000 |
| commit | 66eb6f8b77474fcdd140e43f819a3a80fd5a25a8 (patch) | |
| tree | 8ee58f6f6325dbf1bca25415d7201098385b2f20 | |
| parent | 748e38f4719ea739f39b9529664e2221d6f8a394 (diff) | |
| download | xen-66eb6f8b77474fcdd140e43f819a3a80fd5a25a8.tar.gz xen-66eb6f8b77474fcdd140e43f819a3a80fd5a25a8.tar.bz2 xen-66eb6f8b77474fcdd140e43f819a3a80fd5a25a8.zip | |
xen: arm: implement domain_page_map_to_mfn
This was recently (re?)introduced on x86 in 26447:f831d8dcf18f and is
now used in generic code (specifically tmem in 26454:38847c15d8cd).
This fixes the build on ARM.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
| -rw-r--r-- | xen/arch/arm/mm.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c index 9c5c33448a..7621d1ba0f 100644 --- a/xen/arch/arm/mm.c +++ b/xen/arch/arm/mm.c @@ -208,6 +208,18 @@ void unmap_domain_page(const void *va) local_irq_restore(flags); } +unsigned long domain_page_map_to_mfn(const void *va) +{ + lpae_t *map = xen_second + second_linear_offset(DOMHEAP_VIRT_START); + int slot = ((unsigned long) va - DOMHEAP_VIRT_START) >> SECOND_SHIFT; + unsigned long offset = ((unsigned long)va>>THIRD_SHIFT) & LPAE_ENTRY_MASK; + + ASSERT(slot >= 0 && slot < DOMHEAP_ENTRIES); + ASSERT(map[slot].pt.avail != 0); + + return map[slot].pt.base + offset; +} + void __init arch_init_memory(void) { /* |