Hello, There's a bug in current vpci code for MSI emulation when updating an already bound interrupt. The code will disable and enable the interrupt in order to update the binding, which calls unmap_domain_pirq that disables the global MSI enable flag in the control register.
In order to fix this incorrect behavior introduce a new update helper that should be used to update the bindings of an already enabled group of MSI interrupts. Thanks, Roger. Roger Pau Monne (3): vpci/msi: fix unbind loop vpci/msi: split code to bind pirq vpci/msi: fix update of bound MSI interrupts xen/arch/x86/hvm/vmsi.c | 96 +++++++++++++++++++++++++++++------------ xen/drivers/vpci/msi.c | 3 +- xen/include/xen/vpci.h | 2 + 3 files changed, 71 insertions(+), 30 deletions(-) -- 2.17.0 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
