[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 12/15] xen: arm: initialise dom_{xen,io,cow}
Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx> --- xen/arch/arm/dummy.S | 1 - xen/arch/arm/mm.c | 28 +++++++++++++++++++++++++++- xen/arch/arm/setup.c | 2 ++ xen/include/asm-arm/setup.h | 2 ++ 4 files changed, 31 insertions(+), 2 deletions(-) diff --git a/xen/arch/arm/dummy.S b/xen/arch/arm/dummy.S index 7189648..3fe4ba6 100644 --- a/xen/arch/arm/dummy.S +++ b/xen/arch/arm/dummy.S @@ -7,6 +7,5 @@ x: .word 0xe7f000f0 /* Undefined instruction */ x: mov pc, lr /* Other */ -DUMMY(dom_cow); DUMMY(send_timer_event); DUMMY(share_xen_page_with_privileged_guests); diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c index 718f32d..d9c1ff7 100644 --- a/xen/arch/arm/mm.c +++ b/xen/arch/arm/mm.c @@ -30,12 +30,13 @@ #include <xen/event.h> #include <xen/guest_access.h> #include <xen/domain_page.h> +#include <xen/err.h> #include <asm/page.h> #include <asm/current.h> #include <public/memory.h> #include <xen/sched.h> -struct domain *dom_xen, *dom_io; +struct domain *dom_xen, *dom_io, *dom_cow; /* Static start-of-day pagetables that we use before the allocators are up */ lpae_t xen_pgtable[LPAE_ENTRIES] __attribute__((__aligned__(4096))); @@ -206,6 +207,31 @@ void unmap_domain_page(const void *va) local_irq_restore(flags); } +void __init arch_init_memory(void) +{ + /* + * Initialise our DOMID_XEN domain. + * Any Xen-heap pages that we will allow to be mapped will have + * their domain field set to dom_xen. + */ + dom_xen = domain_create(DOMID_XEN, DOMCRF_dummy, 0); + BUG_ON(IS_ERR(dom_xen)); + + /* + * Initialise our DOMID_IO domain. + * This domain owns I/O pages that are within the range of the page_info + * array. Mappings occur at the priv of the caller. + */ + dom_io = domain_create(DOMID_IO, DOMCRF_dummy, 0); + BUG_ON(IS_ERR(dom_io)); + + /* + * Initialise our COW domain. + * This domain owns sharable pages. + */ + dom_cow = domain_create(DOMID_COW, DOMCRF_dummy, 0); + BUG_ON(IS_ERR(dom_cow)); +} /* Boot-time pagetable setup. * Changes here may need matching changes in head.S */ diff --git a/xen/arch/arm/setup.c b/xen/arch/arm/setup.c index 2076724..61bf47c 100644 --- a/xen/arch/arm/setup.c +++ b/xen/arch/arm/setup.c @@ -265,6 +265,8 @@ void __init start_xen(unsigned long boot_phys_offset, rcu_init(); + arch_init_memory(); + local_irq_enable(); smp_prepare_cpus(cpus); diff --git a/xen/include/asm-arm/setup.h b/xen/include/asm-arm/setup.h index 8769f66..5c84334 100644 --- a/xen/include/asm-arm/setup.h +++ b/xen/include/asm-arm/setup.h @@ -3,6 +3,8 @@ #include <public/version.h> +void arch_init_memory(void); + void copy_from_paddr(void *dst, paddr_t paddr, unsigned long len, int attrindx); void arch_get_xen_caps(xen_capabilities_info_t *info); -- 1.7.9.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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