linux-hardened/arch/x86/include/asm/xen
Julien Grall 4a5b69464e xen/events: Support event channel rebind on ARM
Currently, the event channel rebind code is gated with the presence of
the vector callback.

The virtual interrupt controller on ARM has the concept of per-CPU
interrupt (PPI) which allow us to support per-VCPU event channel.
Therefore there is no need of vector callback for ARM.

Xen is already using a free PPI to notify the guest VCPU of an event.
Furthermore, the xen code initialization in Linux (see
arch/arm/xen/enlighten.c) is requesting correctly a per-CPU IRQ.

Introduce new helper xen_support_evtchn_rebind to allow architecture
decide whether rebind an event is support or not. It will always return
true on ARM and keep the same behavior on x86.

This is also allow us to drop the usage of xen_have_vector_callback
entirely in the ARM code.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-08-20 12:24:15 +01:00
..
cpuid.h xen/pci: Use APIC directly when APIC virtualization hardware is available 2014-12-04 13:02:43 +00:00
events.h xen/events: Support event channel rebind on ARM 2015-08-20 12:24:15 +01:00
hypercall.h arm: xen: implement multicall hypercall support. 2014-04-24 13:09:46 +01:00
hypervisor.h xen: Switch to use hypervisor_cpuid_base() 2013-08-05 06:34:09 -07:00
interface.h arm: xen: implement multicall hypercall support. 2014-04-24 13:09:46 +01:00
interface_32.h xen: implement XENMEM_machphys_mapping 2010-11-12 15:00:06 -08:00
interface_64.h xen: implement XENMEM_machphys_mapping 2010-11-12 15:00:06 -08:00
page-coherent.h xen: add a dma_addr_t dev_addr argument to xen_dma_map_page 2014-12-04 12:41:51 +00:00
page.h xen: Add __GFP_DMA flag when xen_swiotlb_init gets free pages on ARM 2015-05-06 15:02:58 +01:00
pci.h xen/pci: Squash pci_xen_initial_domain and xen_setup_pirqs together. 2011-07-11 13:19:30 -04:00
swiotlb-xen.h xen/swiotlb: Use the swiotlb_late_init_with_tbl to init Xen-SWIOTLB late when PV PCI is used. 2012-09-17 12:58:16 -04:00
trace_types.h xen/trace: add multicall tracing 2011-07-18 15:43:26 -07:00