On Fri, May 16, 2014 at 3:17 PM, li.xi...@freescale.com
wrote:
>> Subject: Re: [PATCHv2] ARM: ioremap: Fix static vm area boundary checking.
>>
>> On Fri, May 16, 2014 at 1:28 AM, Nicolas Pitre
>> wrote:
>> > On Thu, 15 May 2014, Richard Lee wrote:
>>
On Fri, May 16, 2014 at 1:28 AM, Nicolas Pitre wrote:
> On Thu, 15 May 2014, Richard Lee wrote:
>
>> Static vm area boundary check:
>>
>> paddr1 --->| |
>> | |
>> |---| <-\--- svm-
ddr == paddr1, then continue;
<2> If the paddr == paddr2~paddr4 and paddr_end > phys_addr_end,
then continue;
<3> if the paddr >= paddr5 then continue;
Signed-off-by: Richard Lee
---
Change in V2:
- PAGE_SIZE --> PAGE_MASK
- remove the 'size' page size ali
>addr + svm->vm_size
>>
>> <1> If the paddr == paddr1, then continue;
>> <2> If the paddr == paddr2~paddr4 and paddr_end > phys_addr_end,
>> then continue;
>> <3> if the paddr >= paddr5 then continue;
>>
>> Signed-off-by: Richard Lee
On Thu, May 15, 2014 at 6:56 AM, Andrew Morton
wrote:
> On Wed, 14 May 2014 16:18:51 +0800 Richard Lee
> wrote:
>
>> For the IO mapping, the same physical address space maybe
>> mapped more than one time, for example, in some SoCs:
>> - 0x20001000 ~
ddr == paddr1, then continue;
<2> If the paddr == paddr2~paddr4 and paddr_end > phys_addr_end,
then continue;
<3> if the paddr >= paddr5 then continue;
Signed-off-by: Richard Lee
---
arch/arm/mm/ioremap.c | 44 ++--
1 file changed, 42
On Thu, May 15, 2014 at 12:06 AM, Rob Herring wrote:
> Adding Nico...
>
> On Wed, May 14, 2014 at 3:18 AM, Richard Lee wrote:
>> For the IO mapping, the same physical address space maybe
>> mapped more than one time, for example, in some SoCs:
>> - 0x20001000 ~
tion will just return the exist vmalloc area.
This patch add IO mapping space reused support.
Signed-off-by: Richard Lee
---
arch/arm/mm/ioremap.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index f9c32ba..be69333 100644
--- a/arch/a
tion will just return the exist vmalloc area.
Signed-off-by: Richard Lee
---
include/linux/vmalloc.h | 5 +++
mm/vmalloc.c| 82 +
2 files changed, 87 insertions(+)
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 4b
Changes in V2:
- Uses the atomic_t instead.
- Revises some comment message.
Richard Lee (2):
mm/vmalloc: Add IO mapping space reused interface support.
ARM: ioremap: Add IO mapping space reused support.
arch/arm/mm/ioremap.c | 6
include/linux/vmalloc.h | 5 +++
mm/vmalloc.c
On Tue, May 13, 2014 at 4:43 PM, Arnd Bergmann wrote:
> On Tuesday 13 May 2014 09:45:08 Richard Lee wrote:
>> > On Mon, May 12, 2014 at 3:51 PM, Arnd Bergmann wrote:
>> > On Monday 12 May 2014 10:19:55 Richard Lee wrote:
>> >> For the IO mapping, for the
On Tue, May 13, 2014 at 11:13 AM, Rob Herring wrote:
> On Sun, May 11, 2014 at 9:19 PM, Richard Lee wrote:
>> For the IO mapping, for the same physical address space maybe
>> mapped more than one time, for example, in some SoCs:
>> 0x2000 ~ 0x20001000: are global co
> On Mon, May 12, 2014 at 3:51 PM, Arnd Bergmann wrote:
> On Monday 12 May 2014 10:19:55 Richard Lee wrote:
>> For the IO mapping, for the same physical address space maybe
>> mapped more than one time, for example, in some SoCs:
>> 0x2000 ~ 0x20001000: are global
waste to much malloc virtual spaces.
This patch add IO mapping space reused support.
Signed-off-by: Richard Lee
---
arch/arm/mm/ioremap.c | 11 ++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index f9c32ba..26a3744 100644
Richard Lee (2):
mm/vmalloc: Add IO mapping space reused interface.
ARM: ioremap: Add IO mapping space reused support.
arch/arm/mm/ioremap.c | 11 -
include/linux/vmalloc.h | 5
mm/vmalloc.c| 63 +
3 files changed
by more
than one consumer.
Signed-off-by: Richard Lee
---
include/linux/vmalloc.h | 5
mm/vmalloc.c| 63 +
2 files changed, 68 insertions(+)
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 4b8a891..2b811f6
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