Commit bee9e840 authored by Yazen Ghannam's avatar Yazen Ghannam Committed by Borislav Petkov (AMD)
Browse files

x86/amd_nb: Restrict init function to AMD-based systems 



The code implicitly operates on AMD-based systems by matching on PCI
IDs. However, the use of these IDs is going away.

Add an explicit CPU vendor check instead of relying on PCI IDs.

Signed-off-by: default avatarYazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: default avatarBorislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20241206161210.163701-3-yazen.ghannam@amd.com
parent 6a5abeea

arch/x86/kernel/amd_nb.c

+4 −0
Original line number Diff line number Diff line
@@ -582,6 +582,10 @@ static __init void fix_erratum_688(void) 


static __init int init_amd_nbs(void)

{

	if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD &&

	    boot_cpu_data.x86_vendor != X86_VENDOR_HYGON)

		return 0;



	amd_cache_northbridges();

	amd_cache_gart();