[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v5 8/8] tools, libxl: handle the iomem parameter with the memory_mapping hcall
Currently, the configuration-parsing code concerning the handling of the iomem parameter only invokes the XEN_DOMCTL_iomem_permission hypercall. This commit lets the XEN_DOMCTL_memory_mapping hypercall be invoked after XEN_DOMCTL_iomem_permission when the iomem parameter is parsed from a domU configuration file, so that the address range can be mapped to the address space of the domU. The hypercall is invoked only in case of domains using an auto-translated physmap. Signed-off-by: Arianna Avanzini <avanzini.arianna@xxxxxxxxx> Cc: Dario Faggioli <dario.faggioli@xxxxxxxxxx> Cc: Paolo Valente <paolo.valente@xxxxxxxxxx> Cc: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> Cc: Julien Grall <julien.grall@xxxxxxxxxx> Cc: Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx> Cc: Jan Beulich <JBeulich@xxxxxxxx> Cc: Keir Fraser <keir@xxxxxxx> Cc: Tim Deegan <tim@xxxxxxx> Cc: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> Cc: Eric Trudeau <etrudeau@xxxxxxxxxxxx> Cc: Viktor Kleinik <viktor.kleinik@xxxxxxxxxxxxxxx> --- v4: - Let the hypercall be called only in case the guest uses an auto-translated physmap. v3: - Add ifdefs to let the hypercall be called only by ARM or x86 HVM guests, with a whitelist approach. - Remove the NOTE comment. v2: - Add a comment explaining outstanding issues. --- tools/libxl/libxl_create.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c index 369cd77..5ca3b37 100644 --- a/tools/libxl/libxl_create.c +++ b/tools/libxl/libxl_create.c @@ -1113,6 +1113,19 @@ static void domcreate_launch_dm(libxl__egc *egc, libxl__multidev *multidev, "failed give dom%d access to iomem range %"PRIx64"-%"PRIx64, domid, io->start, io->start + io->number - 1); ret = ERROR_FAIL; + continue; + } + if (!libxl__arch_auto_translated_physmap(d_config)) + continue; + ret = xc_domain_memory_mapping(CTX->xch, domid, + io->gfn, io->start, + io->number, 1); + if (ret < 0) { + LOGE(ERROR, + "failed to map to dom%d iomem range %"PRIx64"-%"PRIx64 + " to guest address %"PRIx64, + domid, io->start, io->start + io->number - 1, io->gfn); + ret = ERROR_FAIL; } } -- 1.9.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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