----- Original Message ----- > 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() Beautiful -- queued for crash-7.2.4: https://github.com/crash-utility/crash/commit/61fcad549faa479e6831d528338... Thanks again for all of your work in this task,

Dave > > Signed-off-by: Dou Liyang <douly.fnst(a)cn.fujitsu.com&gt; > --- > 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