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Re: [PATCH 2/4] KVM/MIPS32: Wrap calls to gfn_to_pfn() with srcu_read_lo

To: Gleb Natapov <gleb@redhat.com>
Subject: Re: [PATCH 2/4] KVM/MIPS32: Wrap calls to gfn_to_pfn() with srcu_read_lock/unlock()
From: Sanjay Lal <sanjayl@kymasys.com>
Date: Tue, 21 May 2013 07:22:47 -0700
Cc: linux-mips@linux-mips.org, kvm@vger.kernel.org, ralf@linux-mips.org, mtosatti@redhat.com
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On May 21, 2013, at 1:00 AM, Gleb Natapov wrote:

> On Sun, May 19, 2013 at 10:36:32AM -0400, Sanjay Lal wrote:
>> 
>> On May 19, 2013, at 8:52 AM, Gleb Natapov wrote:
>> 
>>> On Sat, May 18, 2013 at 06:54:24AM -0700, Sanjay Lal wrote:
>>>> - As suggested by Gleb, wrap calls to gfn_to_pfn() with 
>>>> srcu_read_lock/unlock().
>>>> Memory slots should be acccessed from a SRCU read section.
>>>> - kvm_mips_map_page() now returns an error code to it's callers, instead 
>>>> of calling panic()
>>>> if it cannot find a mapping for a particular gfn.
>>>> 
>>>> Signed-off-by: Sanjay Lal <sanjayl@kymasys.com>
>>>> ---
>>>> arch/mips/kvm/kvm_tlb.c | 36 +++++++++++++++++++++++++++---------
>>>> 1 file changed, 27 insertions(+), 9 deletions(-)
>>>> 
>>>> diff --git a/arch/mips/kvm/kvm_tlb.c b/arch/mips/kvm/kvm_tlb.c
>>>> index 89511a9..ab2e9b0 100644
>>>> --- a/arch/mips/kvm/kvm_tlb.c
>>>> +++ b/arch/mips/kvm/kvm_tlb.c
>>>> @@ -16,7 +16,10 @@
>>>> #include <linux/mm.h>
>>>> #include <linux/delay.h>
>>>> #include <linux/module.h>
>>>> +#include <linux/bootmem.h>
>>> You haven't answered it when I asked it on v2:
>>> Is this include still needed now when export of min_low_pfn is not
>>> longer here?
>>> 
>> 
>> Sorry about that, juggling too many patches, bootmem.h is no longer needed 
>> in kvm_tlb.c.  Actually, I thought I had removed it before posting v3.
>> 
> Should I expect new version, or can I just drop this include from the
> patch and apply?
> 
Please drop the include.

Regards
Sanjay



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