[coreboot] ASRock E350M1: MSR 0x00000175 SYSENTER_ESP has 1 inconsistent values across 2 CPUs

Rudolf Marek r.marek at assembler.cz
Mon May 16 22:53:36 CEST 2016

Hi all,

> Could you please confirm that disabling the other two MSR tests for CS and
> EIP is also the right thing to do?

Yes I think this is OK. The SYSENTER MSRs are used by the OS and there is
nothing which BIOS needs to setup.

Same case is the SYSCALL MSR, GS/FS base and KERNEL GS base and possibly also

#define MSR_STAR                0xc0000081 /* legacy mode SYSCALL target */
#define MSR_LSTAR               0xc0000082 /* long mode SYSCALL target */
#define MSR_CSTAR               0xc0000083 /* compat mode SYSCALL target */
#define MSR_SYSCALL_MASK        0xc0000084 /* EFLAGS mask for syscall */
#define MSR_FS_BASE             0xc0000100 /* 64bit FS base */
#define MSR_GS_BASE             0xc0000101 /* 64bit GS base */
#define MSR_KERNEL_GS_BASE      0xc0000102 /* SwapGS GS shadow */
#define MSR_TSC_AUX             0xc0000103 /* Auxiliary TSC */


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