1 files changed, 18 insertions, 77 deletions

diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c
index e16b248699d5..239c16e3d02f 100644
--- a/arch/arm64/kernel/machine_kexec.c
+++ b/arch/arm64/kernel/machine_kexec.c
@@ -11,6 +11,7 @@
 #include <linux/kernel.h>
 #include <linux/kexec.h>
 #include <linux/page-flags.h>
+#include <linux/reboot.h>
 #include <linux/set_memory.h>
 #include <linux/smp.h>
 
@@ -31,26 +32,12 @@
 static void _kexec_image_info(const char *func, int line,
 	const struct kimage *kimage)
 {
-	unsigned long i;
-
-	pr_debug("%s:%d:\n", func, line);
-	pr_debug("  kexec kimage info:\n");
-	pr_debug("    type:        %d\n", kimage->type);
-	pr_debug("    start:       %lx\n", kimage->start);
-	pr_debug("    head:        %lx\n", kimage->head);
-	pr_debug("    nr_segments: %lu\n", kimage->nr_segments);
-	pr_debug("    dtb_mem: %pa\n", &kimage->arch.dtb_mem);
-	pr_debug("    kern_reloc: %pa\n", &kimage->arch.kern_reloc);
-	pr_debug("    el2_vectors: %pa\n", &kimage->arch.el2_vectors);
-
-	for (i = 0; i < kimage->nr_segments; i++) {
-		pr_debug("      segment[%lu]: %016lx - %016lx, 0x%lx bytes, %lu pages\n",
-			i,
-			kimage->segment[i].mem,
-			kimage->segment[i].mem + kimage->segment[i].memsz,
-			kimage->segment[i].memsz,
-			kimage->segment[i].memsz /  PAGE_SIZE);
-	}
+	kexec_dprintk("%s:%d:\n", func, line);
+	kexec_dprintk("  kexec kimage info:\n");
+	kexec_dprintk("    type:        %d\n", kimage->type);
+	kexec_dprintk("    head:        %lx\n", kimage->head);
+	kexec_dprintk("    kern_reloc: %pa\n", &kimage->arch.kern_reloc);
+	kexec_dprintk("    el2_vectors: %pa\n", &kimage->arch.el2_vectors);
 }
 
 void machine_kexec_cleanup(struct kimage *kimage)
@@ -102,7 +89,7 @@ static void kexec_segment_flush(const struct kimage *kimage)
 /* Allocates pages for kexec page table */
 static void *kexec_page_alloc(void *arg)
 {
-	struct kimage *kimage = (struct kimage *)arg;
+	struct kimage *kimage = arg;
 	struct page *page = kimage_alloc_control_pages(kimage, 0);
 	void *vaddr = NULL;
 
@@ -204,7 +191,7 @@ void machine_kexec(struct kimage *kimage)
 		typeof(cpu_soft_restart) *restart;
 
 		cpu_install_idmap();
-		restart = (void *)__pa_symbol(function_nocfi(cpu_soft_restart));
+		restart = (void *)__pa_symbol(cpu_soft_restart);
 		restart(is_hyp_nvhe(), kimage->start, kimage->arch.dtb_mem,
 			0, 0);
 	} else {
@@ -220,37 +207,6 @@ void machine_kexec(struct kimage *kimage)
 	BUG(); /* Should never get here. */
 }
 
-static void machine_kexec_mask_interrupts(void)
-{
-	unsigned int i;
-	struct irq_desc *desc;
-
-	for_each_irq_desc(i, desc) {
-		struct irq_chip *chip;
-		int ret;
-
-		chip = irq_desc_get_chip(desc);
-		if (!chip)
-			continue;
-
-		/*
-		 * First try to remove the active state. If this
-		 * fails, try to EOI the interrupt.
-		 */
-		ret = irq_set_irqchip_state(i, IRQCHIP_STATE_ACTIVE, false);
-
-		if (ret && irqd_irq_inprogress(&desc->irq_data) &&
-		    chip->irq_eoi)
-			chip->irq_eoi(&desc->irq_data);
-
-		if (chip->irq_mask)
-			chip->irq_mask(&desc->irq_data);
-
-		if (chip->irq_disable && !irqd_irq_disabled(&desc->irq_data))
-			chip->irq_disable(&desc->irq_data);
-	}
-}
-
 /**
  * machine_crash_shutdown - shutdown non-crashing cpus and save registers
  */
@@ -268,27 +224,7 @@ void machine_crash_shutdown(struct pt_regs *regs)
 	pr_info("Starting crashdump kernel...\n");
 }
 
-void arch_kexec_protect_crashkres(void)
-{
-	int i;
-
-	for (i = 0; i < kexec_crash_image->nr_segments; i++)
-		set_memory_valid(
-			__phys_to_virt(kexec_crash_image->segment[i].mem),
-			kexec_crash_image->segment[i].memsz >> PAGE_SHIFT, 0);
-}
-
-void arch_kexec_unprotect_crashkres(void)
-{
-	int i;
-
-	for (i = 0; i < kexec_crash_image->nr_segments; i++)
-		set_memory_valid(
-			__phys_to_virt(kexec_crash_image->segment[i].mem),
-			kexec_crash_image->segment[i].memsz >> PAGE_SHIFT, 1);
-}
-
-#ifdef CONFIG_HIBERNATION
+#if defined(CONFIG_CRASH_DUMP) && defined(CONFIG_HIBERNATION)
 /*
  * To preserve the crash dump kernel image, the relevant memory segments
  * should be mapped again around the hibernation.
@@ -315,7 +251,7 @@ void crash_post_resume(void)
  * marked as Reserved as memory was allocated via memblock_reserve().
  *
  * In hibernation, the pages which are Reserved and yet "nosave" are excluded
- * from the hibernation iamge. crash_is_nosave() does thich check for crash
+ * from the hibernation image. crash_is_nosave() does thich check for crash
  * dump kernel and will reduce the total size of hibernation image.
  */
 
@@ -329,8 +265,13 @@ bool crash_is_nosave(unsigned long pfn)
 
 	/* in reserved memory? */
 	addr = __pfn_to_phys(pfn);
-	if ((addr < crashk_res.start) || (crashk_res.end < addr))
-		return false;
+	if ((addr < crashk_res.start) || (crashk_res.end < addr)) {
+		if (!crashk_low_res.end)
+			return false;
+
+		if ((addr < crashk_low_res.start) || (crashk_low_res.end < addr))
+			return false;
+	}
 
 	if (!kexec_crash_image)
 		return true;