diff options
| -rw-r--r-- | sys/amd64/amd64/initcpu.c | 6 | ||||
| -rw-r--r-- | sys/i386/i386/initcpu.c | 6 |
2 files changed, 12 insertions, 0 deletions
diff --git a/sys/amd64/amd64/initcpu.c b/sys/amd64/amd64/initcpu.c index 4376dd0..7aaff82 100644 --- a/sys/amd64/amd64/initcpu.c +++ b/sys/amd64/amd64/initcpu.c @@ -165,4 +165,10 @@ initializecpu(void) */ if ((cpu_feature & CPUID_CLFSH) != 0) cpu_clflush_line_size = ((cpu_procinfo >> 8) & 0xff) * 8; + /* + * XXXKIB: (temporary) hack to work around traps generated when + * CLFLUSHing APIC registers window. + */ + if (cpu_vendor_id == CPU_VENDOR_INTEL && !(cpu_feature & CPUID_SS)) + cpu_feature &= ~CPUID_CLFSH; } diff --git a/sys/i386/i386/initcpu.c b/sys/i386/i386/initcpu.c index 1ecff1c..dc8da0b 100644 --- a/sys/i386/i386/initcpu.c +++ b/sys/i386/i386/initcpu.c @@ -717,6 +717,12 @@ initializecpu(void) */ if ((cpu_feature & CPUID_CLFSH) != 0) cpu_clflush_line_size = ((cpu_procinfo >> 8) & 0xff) * 8; + /* + * XXXKIB: (temporary) hack to work around traps generated when + * CLFLUSHing APIC registers window. + */ + if (cpu_vendor_id == CPU_VENDOR_INTEL && !(cpu_feature & CPUID_SS)) + cpu_feature &= ~CPUID_CLFSH; #if defined(PC98) && !defined(CPU_UPGRADE_HW_CACHE) /* |
