sync with Debian

debian/patches/features/x86/x86-make-x32-syscall-support-conditional.patch

@@ -29,7 +29,7 @@ Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
 
 --- a/Documentation/admin-guide/kernel-parameters.txt
 +++ b/Documentation/admin-guide/kernel-parameters.txt
-@@ -6641,6 +6641,10 @@
+@@ -6498,6 +6498,10 @@
  			later by a loaded module cannot be set this way.
  			Example: sysctl.vm.swappiness=40
  
@@ -42,7 +42,7 @@ Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
  			Ignore sysrq setting - this boot parameter will
 --- a/arch/x86/Kconfig
 +++ b/arch/x86/Kconfig
-@@ -3165,6 +3165,14 @@ config COMPAT_32
+@@ -3058,6 +3058,14 @@ config COMPAT_32
  	select HAVE_UID16
  	select OLD_SIGSUSPEND3
  
@@ -80,7 +80,7 @@ Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
  #include <linux/syscalls.h>
  #include <asm/syscall.h>
  
-@@ -23,3 +26,46 @@ long x32_sys_call(const struct pt_regs *
+@@ -20,3 +23,46 @@
  	default: return __x64_sys_ni_syscall(regs);
  	}
  };
@@ -159,7 +159,7 @@ Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
  #include <asm/thread_info.h>	/* for TS_COMPAT */
  #include <asm/unistd.h>
  
-@@ -28,6 +29,18 @@ extern long ia32_sys_call(const struct p
+@@ -28,6 +29,18 @@ extern const sys_call_ptr_t ia32_sys_cal
  extern long x32_sys_call(const struct pt_regs *, unsigned int nr);
  extern long x64_sys_call(const struct pt_regs *, unsigned int nr);