From: Julien Thierry <julien.thierry@xxxxxxx> Linux has this convention that the lower 0x1000 bytes of the IO space should not be used. (cf PCIBIOS_MIN_IO). Just allocate those bytes to prevent future allocation assigning it to devices. Cc: julien.thierry.kdev@xxxxxxxxx Signed-off-by: Julien Thierry <julien.thierry@xxxxxxx> Signed-off-by: Alexandru Elisei <alexandru.elisei@xxxxxxx> --- arm/pci.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arm/pci.c b/arm/pci.c index 1c0949a22408..4e6467357ce8 100644 --- a/arm/pci.c +++ b/arm/pci.c @@ -37,6 +37,9 @@ void pci__arm_init(struct kvm *kvm) /* Make PCI port allocation start at a properly aligned address */ pci_get_io_port_block(align_pad); + + /* Convention, don't allocate first 0x1000 bytes of PCI IO */ + pci_get_io_port_block(0x1000); } void pci__generate_fdt_nodes(void *fdt) -- 2.20.1
