s390: rename last_break to pgm_last_break

With the upcoming BEAR enhancements last_break isn't really
unique, so rename it to pgm_last_break. This way it should
be more obvious that this is the last_break value that is
written by the hardware when a program check occurs.
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

arch/s390/boot/pgm_check_info.c

@@ -175,6 +175,6 @@ void print_pgm_check_info(void)
 			    gpregs[12], gpregs[13], gpregs[14], gpregs[15]);
 	print_stacktrace();
 	decompressor_printk("Last Breaking-Event-Address:\n");
-	decompressor_printk(" [<%016lx>] %pS\n", (unsigned long)S390_lowcore.breaking_event_addr,
-			    (void *)S390_lowcore.breaking_event_addr);
+	decompressor_printk(" [<%016lx>] %pS\n", (unsigned long)S390_lowcore.pgm_last_break,
+			    (void *)S390_lowcore.pgm_last_break);
 }

arch/s390/include/asm/lowcore.h

@@ -65,7 +65,7 @@ struct lowcore {
 	__u32	external_damage_code;		/* 0x00f4 */
 	__u64	failing_storage_address;	/* 0x00f8 */
 	__u8	pad_0x0100[0x0110-0x0100];	/* 0x0100 */
-	__u64	breaking_event_addr;		/* 0x0110 */
+	__u64	pgm_last_break;			/* 0x0110 */
 	__u8	pad_0x0118[0x0120-0x0118];	/* 0x0118 */
 	psw_t	restart_old_psw;		/* 0x0120 */
 	psw_t	external_old_psw;		/* 0x0130 */

arch/s390/kernel/asm-offsets.c

@@ -78,7 +78,7 @@ int main(void)
 	OFFSET(__LC_MCCK_CODE, lowcore, mcck_interruption_code);
 	OFFSET(__LC_EXT_DAMAGE_CODE, lowcore, external_damage_code);
 	OFFSET(__LC_MCCK_FAIL_STOR_ADDR, lowcore, failing_storage_address);
-	OFFSET(__LC_LAST_BREAK, lowcore, breaking_event_addr);
+	OFFSET(__LC_PGM_LAST_BREAK, lowcore, pgm_last_break);
 	OFFSET(__LC_RETURN_LPSWE, lowcore, return_lpswe);
 	OFFSET(__LC_RETURN_MCCK_LPSWE, lowcore, return_mcck_lpswe);
 	OFFSET(__LC_RST_OLD_PSW, lowcore, restart_old_psw);

arch/s390/kernel/traps.c

@@ -300,7 +300,7 @@ static void (*pgm_check_table[128])(struct pt_regs *regs);
 
 void noinstr __do_pgm_check(struct pt_regs *regs)
 {
-	unsigned long last_break = S390_lowcore.breaking_event_addr;
+	unsigned long last_break = S390_lowcore.pgm_last_break;
 	unsigned int trapnr;
 	irqentry_state_t state;
 

arch/s390/kvm/interrupt.c

@@ -960,7 +960,7 @@ static int __must_check __deliver_prog(struct kvm_vcpu *vcpu)
 	/* bit 1+2 of the target are the ilc, so we can directly use ilen */
 	rc |= put_guest_lc(vcpu, ilen, (u16 *) __LC_PGM_ILC);
 	rc |= put_guest_lc(vcpu, vcpu->arch.sie_block->gbea,
-				 (u64 *) __LC_LAST_BREAK);
+				 (u64 *) __LC_PGM_LAST_BREAK);
 	rc |= put_guest_lc(vcpu, pgm_info.code,
 			   (u16 *)__LC_PGM_INT_CODE);
 	rc |= write_guest_lc(vcpu, __LC_PGM_OLD_PSW,