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-rw-r--r--arch/x86/kernel/setup.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 41ead8d3bc0b..235cfd39e0d7 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -879,6 +879,15 @@ void __init setup_arch(char **cmdline_p)
KERNEL_PGD_PTRS);
load_cr3(swapper_pg_dir);
+ /*
+ * Note: Quark X1000 CPUs advertise PGE incorrectly and require
+ * a cr3 based tlb flush, so the following __flush_tlb_all()
+ * will not flush anything because the cpu quirk which clears
+ * X86_FEATURE_PGE has not been invoked yet. Though due to the
+ * load_cr3() above the TLB has been flushed already. The
+ * quirk is invoked before subsequent calls to __flush_tlb_all()
+ * so proper operation is guaranteed.
+ */
__flush_tlb_all();
#else
printk(KERN_INFO "Command line: %s\n", boot_command_line);