[Crash-utility] [PATCH] x86_64: Remove the unused x86_64_task_uses_5level()

[Dou Liyang]

There's no way to enable paging mode on per-task basis. So, Check
for per-task is redundant. Remove the x86_64_task_uses_5level()

Signed-off-by: Dou Liyang <douly.fnst at cn.fujitsu.com>
---
 x86_64.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/x86_64.c b/x86_64.c
index b07d6f2..96f685b 100644
--- a/x86_64.c
+++ b/x86_64.c
@@ -24,7 +24,6 @@ static int x86_64_uvtop(struct task_context *, ulong, physaddr_t *, int);
 static int x86_64_uvtop_level4(struct task_context *, ulong, physaddr_t *, int);
 static int x86_64_uvtop_level4_xen_wpt(struct task_context *, ulong, physaddr_t *, int);
 static int x86_64_uvtop_level4_rhel4_xen_wpt(struct task_context *, ulong, physaddr_t *, int);
-static int x86_64_task_uses_5level(struct task_context *);
 static ulong x86_64_vmalloc_start(void);
 static int x86_64_is_task_addr(ulong);
 static int x86_64_verify_symbol(const char *, ulong, char);
@@ -341,6 +340,7 @@ x86_64_init(int when)
 			if (l5_enabled)
 				machdep->flags |= VM_5LEVEL;
 		}
+
 		if (machdep->flags & VM_5LEVEL) {
 			machdep->machspec->userspace_top = USERSPACE_TOP_5LEVEL;
 			machdep->machspec->page_offset = PAGE_OFFSET_5LEVEL;
@@ -361,7 +361,6 @@ x86_64_init(int when)
 			machdep->uvtop = x86_64_uvtop_level4;  /* 5-level is optional per-task */
 			machdep->kvbase = (ulong)PAGE_OFFSET;
 			machdep->identity_map_base = (ulong)PAGE_OFFSET;
-
 		}
 
 		/*
@@ -1915,7 +1914,7 @@ x86_64_uvtop_level4(struct task_context *tc, ulong uvaddr, physaddr_t *paddr, in
 		goto no_upage;
 
 	/* If the VM is in 5-level page table */
-	if (machdep->flags & VM_5LEVEL && x86_64_task_uses_5level(tc)) {
+	if (machdep->flags & VM_5LEVEL) {
 		ulong p4d_pte;
 		/*
 		 *  p4d = p4d_offset(pgd, address);
@@ -1986,12 +1985,6 @@ no_upage:
 	return FALSE;
 }
 
-static int
-x86_64_task_uses_5level(struct task_context *tc)
-{
-	return FALSE;
-}
-
 static int
 x86_64_uvtop_level4_xen_wpt(struct task_context *tc, ulong uvaddr, physaddr_t *paddr, int verbose)
 {
-- 
2.14.3