Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "A number of fixes and some late updates:

   - make in_compat_syscall() behavior on x86-32 similar to other
     platforms, this touches a number of generic files but is not
     intended to impact non-x86 platforms.

   - objtool fixes

   - PAT preemption fix

   - paravirt fixes/cleanups

   - cpufeatures updates for new instructions

   - earlyprintk quirk

   - make microcode version in sysfs world-readable (it is already
     world-readable in procfs)

   - minor cleanups and fixes"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  compat: Cleanup in_compat_syscall() callers
  x86/compat: Adjust in_compat_syscall() to generic code under !COMPAT
  objtool: Support GCC 9 cold subfunction naming scheme
  x86/numa_emulation: Fix uniform-split numa emulation
  x86/paravirt: Remove unused _paravirt_ident_32
  x86/mm/pat: Disable preemption around __flush_tlb_all()
  x86/paravirt: Remove GPL from pv_ops export
  x86/traps: Use format string with panic() call
  x86: Clean up 'sizeof x' => 'sizeof(x)'
  x86/cpufeatures: Enumerate MOVDIR64B instruction
  x86/cpufeatures: Enumerate MOVDIRI instruction
  x86/earlyprintk: Add a force option for pciserial device
  objtool: Support per-function rodata sections
  x86/microcode: Make revision and processor flags world-readable

1 files changed, 8 insertions, 20 deletions

diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c
index e4d4df37922a..c0e0101133f3 100644
--- a/arch/x86/kernel/paravirt.c
+++ b/arch/x86/kernel/paravirt.c
@@ -56,17 +56,6 @@ asm (".pushsection .entry.text, \"ax\"\n"
      ".type _paravirt_nop, @function\n\t"
      ".popsection");
 
-/* identity function, which can be inlined */
-u32 notrace _paravirt_ident_32(u32 x)
-{
-	return x;
-}
-
-u64 notrace _paravirt_ident_64(u64 x)
-{
-	return x;
-}
-
 void __init default_banner(void)
 {
 	printk(KERN_INFO "Booting paravirtualized kernel on %s\n",
@@ -102,6 +91,12 @@ static unsigned paravirt_patch_call(void *insnbuf, const void *target,
 }
 
 #ifdef CONFIG_PARAVIRT_XXL
+/* identity function, which can be inlined */
+u64 notrace _paravirt_ident_64(u64 x)
+{
+	return x;
+}
+
 static unsigned paravirt_patch_jmp(void *insnbuf, const void *target,
 				   unsigned long addr, unsigned len)
 {
@@ -146,13 +141,11 @@ unsigned paravirt_patch_default(u8 type, void *insnbuf,
 	else if (opfunc == _paravirt_nop)
 		ret = 0;
 
+#ifdef CONFIG_PARAVIRT_XXL
 	/* identity functions just return their single argument */
-	else if (opfunc == _paravirt_ident_32)
-		ret = paravirt_patch_ident_32(insnbuf, len);
 	else if (opfunc == _paravirt_ident_64)
 		ret = paravirt_patch_ident_64(insnbuf, len);
 
-#ifdef CONFIG_PARAVIRT_XXL
 	else if (type == PARAVIRT_PATCH(cpu.iret) ||
 		 type == PARAVIRT_PATCH(cpu.usergs_sysret64))
 		/* If operation requires a jmp, then jmp */
@@ -309,13 +302,8 @@ struct pv_info pv_info = {
 #endif
 };
 
-#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_PAE)
-/* 32-bit pagetable entries */
-#define PTE_IDENT	__PV_IS_CALLEE_SAVE(_paravirt_ident_32)
-#else
 /* 64-bit pagetable entries */
 #define PTE_IDENT	__PV_IS_CALLEE_SAVE(_paravirt_ident_64)
-#endif
 
 struct paravirt_patch_template pv_ops = {
 	/* Init ops. */
@@ -483,5 +471,5 @@ NOKPROBE_SYMBOL(native_set_debugreg);
 NOKPROBE_SYMBOL(native_load_idt);
 #endif
 
-EXPORT_SYMBOL_GPL(pv_ops);
+EXPORT_SYMBOL(pv_ops);
 EXPORT_SYMBOL_GPL(pv_info);