[On behalf of justin...@arm.com]
Hi Matthew
On 2019/9/20 23:53, Matthew Wilcox wrote:
On Fri, Sep 20, 2019 at 09:54:37PM +0800, Jia He wrote:
-static inline void cow_user_page(struct page *dst, struct page *src, unsigned
long va, struct vm_area_struct *vma)
+static inline int
On Fri, Sep 20, 2019 at 08:53:00AM -0700, Matthew Wilcox wrote:
> On Fri, Sep 20, 2019 at 09:54:37PM +0800, Jia He wrote:
> > -static inline void cow_user_page(struct page *dst, struct page *src,
> > unsigned long va, struct vm_area_struct *vma)
> > +static inline int cow_user_page(struct page
On Fri, Sep 20, 2019 at 09:54:37PM +0800, Jia He wrote:
> -static inline void cow_user_page(struct page *dst, struct page *src,
> unsigned long va, struct vm_area_struct *vma)
> +static inline int cow_user_page(struct page *dst, struct page *src,
> + struct vm_fault
Thanks for your patent review
--
Cheers,
Justin (Jia He)
> -Original Message-
> From: Kirill A. Shutemov
> Sent: 2019年9月20日 22:21
> To: Justin He (Arm Technology China)
> Cc: Catalin Marinas ; Will Deacon
> ; Mark Rutland ; James Morse
> ; Marc Zyngier ; Matthew
> Wilcox ; Kirill
On Fri, Sep 20, 2019 at 09:54:37PM +0800, Jia He wrote:
> When we tested pmdk unit test [1] vmmalloc_fork TEST1 in arm64 guest, there
> will be a double page fault in __copy_from_user_inatomic of cow_user_page.
>
> Below call trace is from arm64 do_page_fault for debugging purpose
> [
When we tested pmdk unit test [1] vmmalloc_fork TEST1 in arm64 guest, there
will be a double page fault in __copy_from_user_inatomic of cow_user_page.
Below call trace is from arm64 do_page_fault for debugging purpose
[ 110.016195] Call trace:
[ 110.016826] do_page_fault+0x5a4/0x690
[
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