Searched hist:"9 c7e2634f647630db4e0719391dd80cd81132a66" (Results 1 – 1 of 1) sorted by relevance
| /linux/arch/x86/kernel/cpu/ |
| H A D | common.c | diff 9c7e2634f647630db4e0719391dd80cd81132a66 Fri Nov 19 04:58:03 CET 2021 Andi Kleen <ak@linux.intel.com> x86/cpu: Don't write CSTAR MSR on Intel CPUs
Intel CPUs do not support SYSCALL in 32-bit mode, but the kernel
initializes MSR_CSTAR unconditionally. That MSR write is normally
ignored by the CPU, but in a TDX guest it raises a #VE trap.
Exclude Intel CPUs from the MSR_CSTAR initialization.
[ tglx: Fixed the subject line and removed the redundant comment. ]
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20211119035803.4012145-1-sathyanarayanan.kuppuswamy@linux.intel.com
|