Merge tag 'for-5.18/parisc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull more parisc architecture updates from Helge Deller:

 - Revert a patch to the invalidate/flush vmap routines which broke
   kernel patching functions on older PA-RISC machines.

 - Fix the kernel patching code wrt locking and flushing. Works now on
   B160L machine as well.

 - Fix CPU IRQ affinity for LASI, WAX and Dino chips

 - Add CPU hotplug support

 - Detect the hppa-suse-linux-gcc compiler when cross-compiling

* tag 'for-5.18/parisc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Fix patch code locking and flushing
  parisc: Find a new timesync master if current CPU is removed
  parisc: Move common_stext into .text section when CONFIG_HOTPLUG_CPU=y
  parisc: Rewrite arch_cpu_idle_dead() for CPU hotplugging
  parisc: Implement __cpu_die() and __cpu_disable() for CPU hotplugging
  parisc: Add PDC locking functions for rendezvous code
  parisc: Move disable_sr_hashing_asm() into .text section
  parisc: Move CPU startup-related functions into .text section
  parisc: Move store_cpu_topology() into text section
  parisc: Switch from GENERIC_CPU_DEVICES to GENERIC_ARCH_TOPOLOGY
  parisc: Ensure set_firmware_width() is called only once
  parisc: Add constants for control registers and clean up mfctl()
  parisc: Detect hppa-suse-linux-gcc compiler for cross-building
  parisc: Clean up cpu_check_affinity() and drop cpu_set_affinity_irq()
  parisc: Fix CPU affinity for Lasi, WAX and Dino chips
  Revert "parisc: Fix invalidate/flush vmap routines"

1 files changed, 6 insertions, 20 deletions

diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
index 456e879d34a8..23348199f3f8 100644
--- a/arch/parisc/kernel/cache.c
+++ b/arch/parisc/kernel/cache.c
@@ -273,7 +273,7 @@ parisc_cache_init(void)
 	}
 }
 
-void __init disable_sr_hashing(void)
+void disable_sr_hashing(void)
 {
 	int srhash_type, retval;
 	unsigned long space_bits;
@@ -611,8 +611,8 @@ void
 flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn)
 {
 	if (pfn_valid(pfn)) {
-		flush_tlb_page(vma, vmaddr);
 		if (likely(vma->vm_mm->context.space_id)) {
+			flush_tlb_page(vma, vmaddr);
 			__flush_cache_page(vma, vmaddr, PFN_PHYS(pfn));
 		} else {
 			__purge_cache_page(vma, vmaddr, PFN_PHYS(pfn));
@@ -624,7 +624,6 @@ void flush_kernel_vmap_range(void *vaddr, int size)
 {
 	unsigned long start = (unsigned long)vaddr;
 	unsigned long end = start + size;
-	unsigned long flags, physaddr;
 
 	if ((!IS_ENABLED(CONFIG_SMP) || !arch_irqs_disabled()) &&
 	    (unsigned long)size >= parisc_cache_flush_threshold) {
@@ -633,14 +632,8 @@ void flush_kernel_vmap_range(void *vaddr, int size)
 		return;
 	}
 
-	while (start < end) {
-		physaddr = lpa(start);
-		purge_tlb_start(flags);
-		pdtlb(SR_KERNEL, start);
-		purge_tlb_end(flags);
-		flush_dcache_page_asm(physaddr, start);
-		start += PAGE_SIZE;
-	}
+	flush_kernel_dcache_range_asm(start, end);
+	flush_tlb_kernel_range(start, end);
 }
 EXPORT_SYMBOL(flush_kernel_vmap_range);
 
@@ -648,7 +641,6 @@ void invalidate_kernel_vmap_range(void *vaddr, int size)
 {
 	unsigned long start = (unsigned long)vaddr;
 	unsigned long end = start + size;
-	unsigned long flags, physaddr;
 
 	if ((!IS_ENABLED(CONFIG_SMP) || !arch_irqs_disabled()) &&
 	    (unsigned long)size >= parisc_cache_flush_threshold) {
@@ -657,13 +649,7 @@ void invalidate_kernel_vmap_range(void *vaddr, int size)
 		return;
 	}
 
-	while (start < end) {
-		physaddr = lpa(start);
-		purge_tlb_start(flags);
-		pdtlb(SR_KERNEL, start);
-		purge_tlb_end(flags);
-		purge_dcache_page_asm(physaddr, start);
-		start += PAGE_SIZE;
-	}
+	purge_kernel_dcache_range_asm(start, end);
+	flush_tlb_kernel_range(start, end);
 }
 EXPORT_SYMBOL(invalidate_kernel_vmap_range);