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Commit 3250c91a authored by Ravikiran G Thirumalai's avatar Ravikiran G Thirumalai Committed by Ingo Molnar
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x86: vSMP: Fix is_vsmp_box() 



is_vsmp_box() currently does not work on vSMPowered systems,  as pci cfg
space is not read correctly -- This patch fixes it.

Signed-off-by: default avatarRavikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 86420506

arch/x86/kernel/vsmp_64.c

+4 −2
Original line number Diff line number Diff line
@@ -84,8 +84,10 @@ int is_vsmp_box(void) 
		return vsmp;



	/* Check if we are running on a ScaleMP vSMP box */

	if (read_pci_config(0, 0x1f, 0, PCI_VENDOR_ID) ==

	     (PCI_VENDOR_ID_SCALEMP || (PCI_DEVICE_ID_SCALEMP_VSMP_CTL << 16)))

	if ((read_pci_config_16(0, 0x1f, 0, PCI_VENDOR_ID) ==

	     PCI_VENDOR_ID_SCALEMP) &&

	    (read_pci_config_16(0, 0x1f, 0, PCI_DEVICE_ID) ==

	    PCI_DEVICE_ID_SCALEMP_VSMP_CTL))

		vsmp = 1;



	return vsmp;