Messages in this thread |  | | | Date | Wed, 6 Jun 2012 17:14:23 +0530 | | From | Srikar Dronamraju <> | | Subject | Re: [PATCH 1/2] uprobes: Pass probed vaddr to arch_uprobe_analyze_insn() |
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* Ingo Molnar <mingo@kernel.org> [2012-06-06 11:40:15]:
> > * Ananth N Mavinakayanahalli <ananth@in.ibm.com> wrote: > > > On Wed, Jun 06, 2012 at 11:23:52AM +0200, Peter Zijlstra wrote: > > > On Wed, 2012-06-06 at 14:49 +0530, Ananth N Mavinakayanahalli wrote: > > > > +int arch_uprobe_analyze_insn(struct arch_uprobe *auprobe, struct mm_struct *mm, loff_t vaddr) > > > > > > Don't we traditionally use unsigned long to pass vaddrs? > > > > Right. But the vaddr we pass here is vma_info->vaddr which is loff_t. > > I guess I should've made that clear in the patch description. > > Why not fix struct vma_info's vaddr type? >
Calculating and comparing vaddr results either uses variables of type loff_t. To avoid typecasting and avoid overflow at each of these places, we used loff_t.
Ananth, install_breakpoint() already has a variable of type addr of type unsigned long. Why dont you use addr instead of vaddr.
-- Thanks and regards Srikar
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