On Thu, Sep 27, 2012 at 06:15:05PM +0100, Christoffer Dall wrote:
> On Thu, Sep 27, 2012 at 8:39 AM, Catalin Marinas
> wrote:
> > On 25 September 2012 13:38, Christoffer Dall
> > wrote:
> +
> + /*
> + * If this is a write fault (think COW) we need to make sure the
> +
On Thu, Sep 27, 2012 at 8:39 AM, Catalin Marinas
wrote:
> On 25 September 2012 13:38, Christoffer Dall
> wrote:
+
+ /*
+ * If this is a write fault (think COW) we need to make sure the
+ * existing page, which other CPUs might still read, doesn't go
away
>>>
gt; Cc: kvm@vger.kernel.org; linux-arm-ker...@lists.infradead.org;
>> kvm...@lists.cs.columbia.edu; ??
>> Subject: Re: [PATCH 13/15] KVM: ARM: Handle guest faults in KVM
>>
>>>> +
>>>> + /*
>>>> + * If this is a write fault (think COW) we need to ma
On 25 September 2012 13:38, Christoffer Dall
wrote:
>>> +
>>> + /*
>>> + * If this is a write fault (think COW) we need to make sure the
>>> + * existing page, which other CPUs might still read, doesn't go
>>> away
>>> + * from under us, by calling gfn_to_pfn_prot(write_fault=tr
gt; Cc: kvm@vger.kernel.org; linux-arm-ker...@lists.infradead.org;
>> kvm...@lists.cs.columbia.edu; 김창환
>> Subject: Re: [PATCH 13/15] KVM: ARM: Handle guest faults in KVM
>>
>> >> +
>> >> + /*
>> >> + * If this is a write fault (thi
.cs.columbia.edu; 김창환
> Subject: Re: [PATCH 13/15] KVM: ARM: Handle guest faults in KVM
>
> >> +
> >> + /*
> >> + * If this is a write fault (think COW) we need to make sure the
> >> + * existing page, which other CPUs might still rea
>> +
>> + /*
>> + * If this is a write fault (think COW) we need to make sure the
>> + * existing page, which other CPUs might still read, doesn't go
>> away
>> + * from under us, by calling gfn_to_pfn_prot(write_fault=true).
>> + * Therefore, we call gfn_to_pfn_prot(write_f
Subject: [PATCH 13/15] KVM: ARM: Handle guest faults in KVM
>
> From: Christoffer Dall
>
> Handles the guest faults in KVM by mapping in corresponding user pages in
> the 2nd stage page tables.
>
> We invalidate the instruction cache by MVA whenever we map a page to the
> gu
From: Christoffer Dall
Handles the guest faults in KVM by mapping in corresponding user pages
in the 2nd stage page tables.
We invalidate the instruction cache by MVA whenever we map a page to the
guest (no, we cannot only do it when we have an iabt because the guest
may happily read/write a pag
