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| author | Robert Richter <robert.richter@amd.com> | 2008-08-22 20:23:37 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-23 17:39:30 +0200 |
| commit | 9b4e27b52853c5da77e61a4e36fbc40688b7a829 (patch) | |
| tree | 83cae2da59bf5fe1b3f5cb5dc0f08a0cdb8fe63c /arch | |
| parent | 9754a5b840a209bc1f192d59f63e81b698a55ac8 (diff) | |
| download | linux-9b4e27b52853c5da77e61a4e36fbc40688b7a829.tar.gz linux-9b4e27b52853c5da77e61a4e36fbc40688b7a829.tar.bz2 linux-9b4e27b52853c5da77e61a4e36fbc40688b7a829.zip | |
x86: fix: do not run code in amd_bus.c on non-AMD CPUs
Jan Beulich wrote:
> Even worse - this would even try to access the MSR on non-AMD CPUs
> (currently probably prevented just by the fact that only AMD ones use
> family values of 0x10 or higher).
This patch adds cpu vendor check to the postcore_initcalls.
Reported-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/pci/amd_bus.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/arch/x86/pci/amd_bus.c b/arch/x86/pci/amd_bus.c index dbf532369711..4a6f1a6a3aa9 100644 --- a/arch/x86/pci/amd_bus.c +++ b/arch/x86/pci/amd_bus.c @@ -555,9 +555,11 @@ static int __init early_fill_mp_bus_info(void) return 0; } -postcore_initcall(early_fill_mp_bus_info); +#else /* !CONFIG_X86_64 */ -#endif +static int __init early_fill_mp_bus_info(void) { return 0; } + +#endif /* !CONFIG_X86_64 */ /* common 32/64 bit code */ @@ -583,4 +585,15 @@ static int __init enable_pci_io_ecs(void) return 0; } -postcore_initcall(enable_pci_io_ecs); +static int __init amd_postcore_init(void) +{ + if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) + return 0; + + early_fill_mp_bus_info(); + enable_pci_io_ecs(); + + return 0; +} + +postcore_initcall(amd_postcore_init); |