ioport_resource / iomem_resource - PCI specific?

Hi,

I have a doubt regarding the following definitions in kernel/resource.c:

struct resource ioport_resource = {
.name = "PCI IO",
.start = 0x0000,
.end = IO_SPACE_LIMIT,
.flags = IORESOURCE_IO,
};

struct resource iomem_resource = {
.name = "PCI mem",
.start = 0UL,
.end = ~0UL,
.flags = IORESOURCE_MEM,
};

Aren't the symbols ioport_resource and iomem_resource meant for
"generic" resource management for all buses / devices? If yes, then
why their names have "PCI" tagged to them?

Just Curious,

Rajat
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