Commit 636228a8 authored by Michael S. Tsirkin's avatar Michael S. Tsirkin
Browse files

q35: make pci window address/size match guest cfg 



For Q35, MMCFG address and size are guest configurable.
Update w32 property to make it behave accordingly.

Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 2d1fe187

hw/pci-host/q35.c

+10 −0
Original line number Diff line number Diff line
@@ -214,6 +214,16 @@ static void mch_update_pciexbar(MCHPCIState *mch) 
    }

    addr = pciexbar & addr_mask;

    pcie_host_mmcfg_update(pehb, enable, addr, length);

    /* Leave enough space for the MCFG BAR */

    /*

     * TODO: this matches current bios behaviour, but it's not a power of two,

     * which means an MTRR can't cover it exactly.

     */

    if (enable) {

        mch->pci_info.w32.begin = addr + length;

    } else {

        mch->pci_info.w32.begin = MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT;

    }

}



/* PAM */