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| author | Pu Wen <puwen@hygon.cn> | 2018-09-25 22:45:01 +0800 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2018-09-27 18:28:58 +0200 |
| commit | b7a5cb4f220e78490735b2b984ad29b7d8e612a9 (patch) | |
| tree | 616a5c1b15f70b7b661fd411d3d0e1ef793afa5d /arch/x86/include/asm/amd_nb.h | |
| parent | c3fecca457c1aa1c1a2f81bfe68393af244a263e (diff) | |
| download | linux-b7a5cb4f220e78490735b2b984ad29b7d8e612a9.tar.bz2 | |
x86/amd_nb: Check vendor in AMD-only functions
Exit early in functions which are meant to run on AMD only but which get
run on different vendor (VMs, etc).
[ bp: rewrite commit message. ]
Signed-off-by: Pu Wen <puwen@hygon.cn>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: bhelgaas@google.com
Cc: tglx@linutronix.de
Cc: mingo@redhat.com
Cc: hpa@zytor.com
Cc: x86@kernel.org
Cc: thomas.lendacky@amd.com
Cc: helgaas@kernel.org
Link: https://lkml.kernel.org/r/487d8078708baedaf63eb00a82251e228b58f1c2.1537885177.git.puwen@hygon.cn
Diffstat (limited to 'arch/x86/include/asm/amd_nb.h')
| -rw-r--r-- | arch/x86/include/asm/amd_nb.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/amd_nb.h b/arch/x86/include/asm/amd_nb.h index fddb6d26239f..1ae4e5791afa 100644 --- a/arch/x86/include/asm/amd_nb.h +++ b/arch/x86/include/asm/amd_nb.h @@ -103,6 +103,9 @@ static inline u16 amd_pci_dev_to_node_id(struct pci_dev *pdev) static inline bool amd_gart_present(void) { + if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) + return false; + /* GART present only on Fam15h, upto model 0fh */ if (boot_cpu_data.x86 == 0xf || boot_cpu_data.x86 == 0x10 || (boot_cpu_data.x86 == 0x15 && boot_cpu_data.x86_model < 0x10)) |