Merge branch 'parisc-4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc updates from Helge Deller:
"Three small patches:

- A boot fix for A500 machines, crash was caused by the new
alternative patching code from this merge window (Dave)

- Change __kernel_suseconds_t to match glibc on 64-bit parisc (Arnd)

- Use constants instead of hard-coded numbers (me)"

* 'parisc-4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix A500 boot crash
parisc: Use LINUX_GATEWAY_SPACE constant in entry.S
parisc64: change __kernel_suseconds_t to match glibc

arch/parisc/include/uapi/asm/posix_types.h

···
 typedef unsigned short		__kernel_ipc_pid_t;
 #define __kernel_ipc_pid_t __kernel_ipc_pid_t
 
-typedef int			__kernel_suseconds_t;
-#define __kernel_suseconds_t __kernel_suseconds_t
-
 typedef long long		__kernel_off64_t;
 typedef unsigned long long	__kernel_ino64_t;
 

arch/parisc/kernel/entry.S

···
 	*/
 	.macro		space_check	spc,tmp,fault
 	mfsp		%sr7,\tmp
+	/* check against %r0 which is same value as LINUX_GATEWAY_SPACE */
 	or,COND(<>)	%r0,\spc,%r0	/* user may execute gateway page
 					 * as kernel, so defeat the space
 					 * check if it is */
···
 	 * Only do signals if we are returning to user space
 	 */
 	LDREG	PT_IASQ0(%r16), %r20
-	cmpib,COND(=),n 0,%r20,intr_restore /* backward */
+	cmpib,COND(=),n LINUX_GATEWAY_SPACE, %r20, intr_restore /* backward */
 	LDREG	PT_IASQ1(%r16), %r20
-	cmpib,COND(=),n 0,%r20,intr_restore /* backward */
+	cmpib,COND(=),n LINUX_GATEWAY_SPACE, %r20, intr_restore /* backward */
 
 	/* NOTE: We need to enable interrupts if we have to deliver
 	 * signals. We used to do this earlier but it caused kernel

arch/parisc/mm/init.c

···
 
 void __init set_kernel_text_rw(int enable_read_write)
 {
-	unsigned long start = (unsigned long)_stext;
+	unsigned long start = (unsigned long)__init_begin;
 	unsigned long end   = (unsigned long)_etext;
 
 	map_pages(start, __pa(start), end-start,
 		PAGE_KERNEL_RWX, enable_read_write ? 1:0);
 
-	/* force the kernel to see the new TLB entries */
-	__flush_tlb_range(0, start, end);
-
-	/* dump old cached instructions */
-	flush_icache_range(start, end);
+	/* force the kernel to see the new page table entries */
+	flush_cache_all();
+	flush_tlb_all();
 }
 
 void __ref free_initmem(void)