[PATCH 1131/1131] set_arm64_irq_stack_size

[wonderzyp <wonderzyp@xxxxxx>]

Signed-off-by: Yeping Zheng <wonderzyp@xxxxxxxxx>
---
 arm64.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 47 insertions(+), 2 deletions(-)

diff --git a/arm64.c b/arm64.c
index b3040d7..39d891b 100644
--- a/arm64.c
+++ b/arm64.c
@@ -93,6 +93,7 @@ static void arm64_calc_VA_BITS(void);
 static int arm64_is_uvaddr(ulong, struct task_context *);
 static void arm64_calc_KERNELPACMASK(void);
 static int arm64_get_vmcoreinfo(unsigned long *vaddr, const char *label, int base);
+static ulong arm64_set_irq_stack_size(struct machine_specific *ms);
 
 struct kernel_range {
        unsigned long modules_vaddr, modules_end;
@@ -2223,8 +2224,14 @@ arm64_irq_stack_init(void)
                if (MEMBER_EXISTS("thread_union", "stack")) { 
                        if ((sz = MEMBER_SIZE("thread_union", "stack")) > 0)
                                ms->irq_stack_size = sz;
-               } else
-                       ms->irq_stack_size = ARM64_IRQ_STACK_SIZE;
+               } else {
+                       ulong res = arm64_set_irq_stack_size(ms);
+                       if (res > 0){
+                               ms->irq_stack_size = res;
+                       } else {
+                               ms->irq_stack_size = ARM64_IRQ_STACK_SIZE;
+                       }
+               }
 
                machdep->flags |= IRQ_STACKS;
 
@@ -4921,6 +4928,44 @@ static void arm64_calc_KERNELPACMASK(void)
        }
 }
 
+static ulong arm64_set_irq_stack_size(struct machine_specific *ms)
+{
+       char *string;
+       int ret;
+       int KASAN_THREAD_SHIFT = 0;
+       int MIN_THREAD_SHIFT;
+       ulong ARM64_PAGE_SHIFT;
+       ulong THREAD_SHIFT = 0;
+       ulong THREAD_SIZE;
+       if (kt->ikconfig_flags & IKCONFIG_AVAIL) {
+               if ((ret = get_kernel_config("CONFIG_KASAN_GENERIC", NULL) == IKCONFIG_Y) ||
+                       (ret = get_kernel_config("CONFIG_KASAN_SW_TAGS", NULL) == IKCONFIG_Y)) {
+                               KASAN_THREAD_SHIFT = 1;
+                       }
+       }
+       MIN_THREAD_SHIFT = 14 + KASAN_THREAD_SHIFT;
+
+       if (kt->ikconfig_flags & IKCONFIG_AVAIL) {
+               if ((ret = get_kernel_config("CONFIG_VMAP_STACK", NULL)) == IKCONFIG_Y){
+                       if ((ret = get_kernel_config("CONFIG_ARM64_PAGE_SHIFT", &string)) == IKCONFIG_STR){
+                               ARM64_PAGE_SHIFT = atol(string);
+                       }
+                       if (MIN_THREAD_SHIFT < ARM64_PAGE_SHIFT){
+                               THREAD_SHIFT = ARM64_PAGE_SHIFT;
+                       } else {
+                               THREAD_SHIFT = MIN_THREAD_SHIFT;
+                       }
+               }
+       }
+
+       if (THREAD_SHIFT == 0) {
+               return -1;
+       }
+
+       THREAD_SIZE = ((1UL) << THREAD_SHIFT);
+       return THREAD_SIZE;
+}
+
 #endif  /* ARM64 */
 
 
-- 
2.25.1
--
Crash-utility mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxxxxxx
https://${domain_name}/admin/lists/devel.lists.crash-utility.osci.io/
Contribution Guidelines: https://github.com/crash-utility/crash/wiki