[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v4 4/9] xen/arm: Implement get_maximum_gpfn hypercall for arm
From: Evgeny Fedotov <e.fedotov@xxxxxxxxxxx> By using the memory map info in arch_domain (from set_memory_map hypercall) implement get_maximum_gpfn hypercall. Singed-off-by: Evgeny Fedotov <e.fedotov@xxxxxxxxxxx> --- xen/arch/arm/mm.c | 21 ++++++++++++++++++++- xen/include/asm-arm/mm.h | 2 ++ 2 files changed, 22 insertions(+), 1 deletion(-) diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c index f5d9cf4..120eae8 100644 --- a/xen/arch/arm/mm.c +++ b/xen/arch/arm/mm.c @@ -918,9 +918,28 @@ int page_is_ram_type(unsigned long mfn, unsigned long mem_type) return 0; } +void get_gma_start_end(struct domain *d, vaddr_t *start, vaddr_t *end) +{ + int nr_banks = d->arch.map_domain.nr_banks; + + ASSERT(nr_banks != 0); + + spin_lock(&d->arch.map_lock); + if ( start ) + *start = d->arch.map_domain.bank[0].start; + if ( end ) + *end = d->arch.map_domain.bank[nr_banks-1].start + + d->arch.map_domain.bank[nr_banks-1].size; + spin_unlock(&d->arch.map_lock); +} + unsigned long domain_get_maximum_gpfn(struct domain *d) { - return -ENOSYS; + vaddr_t end; + + get_gma_start_end(d, NULL, &end); + + return (unsigned long) (end >> PAGE_SHIFT); } void share_xen_page_with_guest(struct page_info *page, diff --git a/xen/include/asm-arm/mm.h b/xen/include/asm-arm/mm.h index 5142524..021e8d6 100644 --- a/xen/include/asm-arm/mm.h +++ b/xen/include/asm-arm/mm.h @@ -342,6 +342,8 @@ static inline void put_page_and_type(struct page_info *page) put_page(page); } +void get_gma_start_end(struct domain *d, vaddr_t *start, vaddr_t *end); + #endif /* __ARCH_ARM_MM__ */ /* * Local variables: -- 1.8.1.2 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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