[PATCH 3/5] x86/mm/kaiser: Revert ("Map the entry stack variables")

[Peter Zijlstra]

Because its not needed. The entry_SYSCALL_64 code isn't ran when
KAISER is enabled, we use entry_SYSCALL_64_trampoline instead.

Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
---
 arch/x86/kernel/cpu/common.c |    2 +-
 arch/x86/kernel/process_64.c |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -1515,7 +1515,7 @@ EXPORT_PER_CPU_SYMBOL(__preempt_count);
  * the top of the kernel stack.  Use an extra percpu variable to track the
  * top of the kernel stack directly.
  */
-DEFINE_PER_CPU_USER_MAPPED(unsigned long, cpu_current_top_of_stack) =
+DEFINE_PER_CPU(unsigned long, cpu_current_top_of_stack) =
 	(unsigned long)&init_thread_union + THREAD_SIZE;
 EXPORT_PER_CPU_SYMBOL(cpu_current_top_of_stack);
 
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -59,7 +59,7 @@
 #include <asm/unistd_32_ia32.h>
 #endif
 
-__visible DEFINE_PER_CPU_USER_MAPPED(unsigned long, rsp_scratch);
+__visible DEFINE_PER_CPU(unsigned long, rsp_scratch);
 
 /* Prints also some state that isn't saved in the pt_regs */
 void __show_regs(struct pt_regs *regs, int all)