Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/x86/kernel/asm-offsets_64.c b/arch/x86/kernel/asm-offsets_64.c
index 3b9405e..24d2fde 100644
--- a/arch/x86/kernel/asm-offsets_64.c
+++ b/arch/x86/kernel/asm-offsets_64.c
@@ -6,13 +6,28 @@
 #include <asm/ia32.h>
 
 #define __SYSCALL_64(nr, sym, qual) [nr] = 1,
+#define __SYSCALL_X32(nr, sym, qual)
 static char syscalls_64[] = {
 #include <asm/syscalls_64.h>
 };
+#undef __SYSCALL_64
+#undef __SYSCALL_X32
+
+#ifdef CONFIG_X86_X32_ABI
+#define __SYSCALL_64(nr, sym, qual)
+#define __SYSCALL_X32(nr, sym, qual) [nr] = 1,
+static char syscalls_x32[] = {
+#include <asm/syscalls_64.h>
+};
+#undef __SYSCALL_64
+#undef __SYSCALL_X32
+#endif
+
 #define __SYSCALL_I386(nr, sym, qual) [nr] = 1,
 static char syscalls_ia32[] = {
 #include <asm/syscalls_32.h>
 };
+#undef __SYSCALL_I386
 
 #if defined(CONFIG_KVM_GUEST) && defined(CONFIG_PARAVIRT_SPINLOCKS)
 #include <asm/kvm_para.h>
@@ -21,10 +36,13 @@
 int main(void)
 {
 #ifdef CONFIG_PARAVIRT
-	OFFSET(PV_CPU_usergs_sysret64, pv_cpu_ops, usergs_sysret64);
-	OFFSET(PV_CPU_swapgs, pv_cpu_ops, swapgs);
+#ifdef CONFIG_PARAVIRT_XXL
+	OFFSET(PV_CPU_usergs_sysret64, paravirt_patch_template,
+	       cpu.usergs_sysret64);
+	OFFSET(PV_CPU_swapgs, paravirt_patch_template, cpu.swapgs);
 #ifdef CONFIG_DEBUG_ENTRY
-	OFFSET(PV_IRQ_save_fl, pv_irq_ops, save_fl);
+	OFFSET(PV_IRQ_save_fl, paravirt_patch_template, irq.save_fl);
+#endif
 #endif
 	BLANK();
 #endif
@@ -59,22 +77,28 @@
 	ENTRY(cr2);
 	ENTRY(cr3);
 	ENTRY(cr4);
-	ENTRY(cr8);
 	ENTRY(gdt_desc);
 	BLANK();
 #undef ENTRY
 
 	OFFSET(TSS_ist, tss_struct, x86_tss.ist);
+	DEFINE(DB_STACK_OFFSET, offsetof(struct cea_exception_stacks, DB_stack) -
+	       offsetof(struct cea_exception_stacks, DB1_stack));
 	BLANK();
 
 #ifdef CONFIG_STACKPROTECTOR
-	DEFINE(stack_canary_offset, offsetof(union irq_stack_union, stack_canary));
+	DEFINE(stack_canary_offset, offsetof(struct fixed_percpu_data, stack_canary));
 	BLANK();
 #endif
 
 	DEFINE(__NR_syscall_max, sizeof(syscalls_64) - 1);
 	DEFINE(NR_syscalls, sizeof(syscalls_64));
 
+#ifdef CONFIG_X86_X32_ABI
+	DEFINE(__NR_syscall_x32_max, sizeof(syscalls_x32) - 1);
+	DEFINE(X32_NR_syscalls, sizeof(syscalls_x32));
+#endif
+
 	DEFINE(__NR_syscall_compat_max, sizeof(syscalls_ia32) - 1);
 	DEFINE(IA32_NR_syscalls, sizeof(syscalls_ia32));