[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [V3 PATCH 2/9] PVH dom0: create add_mem_mapping_for_xlate() function
In this preparatory patch, add portion of XEN_DOMCTL_memory_mapping code is put into a function so it can be called later for PVH from construct_dom0. There is no change in it's functionality. The function is made non-static in the construct_dom0 patch. Signed-off-by: Mukesh Rathor <mukesh.rathor@xxxxxxxxxx> --- xen/arch/x86/domctl.c | 48 ++++++++++++++++++++++++++++++------------------ 1 files changed, 30 insertions(+), 18 deletions(-) diff --git a/xen/arch/x86/domctl.c b/xen/arch/x86/domctl.c index 8644218..e3f544a 100644 --- a/xen/arch/x86/domctl.c +++ b/xen/arch/x86/domctl.c @@ -46,6 +46,35 @@ static int gdbsx_guest_mem_io( return (iop->remain ? -EFAULT : 0); } +static int add_mem_mapping_for_xlate(struct domain *d, unsigned long gfn, + unsigned long mfn, unsigned long nr_mfns) +{ + unsigned long i; + int ret = 0; + + for ( i = 0; i < nr_mfns; i++ ) + if ( !set_mmio_p2m_entry(d, gfn + i, _mfn(mfn + i)) ) + ret = -EIO; + if ( ret ) + { + if ( is_hardware_domain(d) ) + panic("Failed setting p2m. ret:%d gfn:%lx mfn:%lx i:%ld\n", + ret, gfn, mfn, i); + + printk(XENLOG_G_WARNING + "memory_map:fail: dom%d gfn=%lx mfn=%lx\n", + d->domain_id, gfn + i, mfn + i); + while ( i-- ) + clear_mmio_p2m_entry(d, gfn + i); + if ( iomem_deny_access(d, mfn, mfn + nr_mfns - 1) && + is_hardware_domain(current->domain) ) + printk(XENLOG_ERR + "memory_map: failed to deny dom%d access to [%lx,%lx]\n", + d->domain_id, mfn, mfn + nr_mfns - 1); + } + return ret; +} + long arch_do_domctl( struct xen_domctl *domctl, struct domain *d, XEN_GUEST_HANDLE_PARAM(xen_domctl_t) u_domctl) @@ -649,24 +678,7 @@ long arch_do_domctl( ret = iomem_permit_access(d, mfn, mfn + nr_mfns - 1); if ( !ret && paging_mode_translate(d) ) - { - for ( i = 0; !ret && i < nr_mfns; i++ ) - if ( !set_mmio_p2m_entry(d, gfn + i, _mfn(mfn + i)) ) - ret = -EIO; - if ( ret ) - { - printk(XENLOG_G_WARNING - "memory_map:fail: dom%d gfn=%lx mfn=%lx\n", - d->domain_id, gfn + i, mfn + i); - while ( i-- ) - clear_mmio_p2m_entry(d, gfn + i); - if ( iomem_deny_access(d, mfn, mfn + nr_mfns - 1) && - is_hardware_domain(current->domain) ) - printk(XENLOG_ERR - "memory_map: failed to deny dom%d access to [%lx,%lx]\n", - d->domain_id, mfn, mfn + nr_mfns - 1); - } - } + ret = add_mem_mapping_for_xlate(d, gfn, mfn, nr_mfns); } else { -- 1.7.2.3 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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