From: santosh.shilimkar@ti.com (Santosh Shilimkar)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 4/6] ARM: mm: LPAE: Correct virt_to_phys patching for 64 bit physical addresses
Date: Sat, 3 Aug 2013 15:25:22 -0400 [thread overview]
Message-ID: <51FD5922.1060705@ti.com> (raw)
In-Reply-To: <alpine.LFD.2.03.1308030943320.14472@syhkavp.arg>
On Saturday 03 August 2013 10:01 AM, Nicolas Pitre wrote:
> On Sat, 3 Aug 2013, Sricharan R wrote:
>
>> On Saturday 03 August 2013 08:58 AM, Nicolas Pitre wrote:
>>> ... meaning that, instead of using 0x81 for the stub value on the mov
>>> instruction, it only has to be 0x83. Bits 7 and 0 still act as anchors
>>> for the rotation field in the opcode, while bit 1 indicates which value
>>> to patch in.
>> I started with this kind of augmenting with the immediate operand
>> while starting V2. But the problem was, we do the runtime patching twice.
>
> Ahhh... Bummer.
>
Sorry if it wasn't clear but I thought we discussed why patching is
done twice. This was purely based on the discussion where RMK
suggested to follow that approach to minimize code changes.
Looks like we need to revisit that now based on Russell's latest
comment.
Regards,
Santosh
next prev parent reply other threads:[~2013-08-03 19:25 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-31 16:44 [PATCH v2 0/6] ARM: mm: Extend the runtime patch stub for PAE systems Santosh Shilimkar
2013-07-31 16:44 ` [PATCH v2 1/6] ARM: mm: LPAE: use phys_addr_t appropriately in p2v and v2p conversions Santosh Shilimkar
2013-07-31 16:44 ` [PATCH v2 2/6] ARM: mm: Introduce virt_to_idmap() with an arch hook Santosh Shilimkar
2013-08-03 1:53 ` Nicolas Pitre
2013-08-03 19:03 ` Santosh Shilimkar
2013-07-31 16:44 ` [PATCH v2 3/6] ARM: mm: Move the idmap print to appropriate place in the code Santosh Shilimkar
2013-08-03 1:55 ` Nicolas Pitre
2013-07-31 16:44 ` [PATCH v2 4/6] ARM: mm: LPAE: Correct virt_to_phys patching for 64 bit physical addresses Santosh Shilimkar
2013-07-31 18:31 ` Sricharan R
2013-08-03 3:32 ` Nicolas Pitre
2013-08-03 3:28 ` Nicolas Pitre
2013-08-03 12:47 ` Sricharan R
2013-08-03 14:01 ` Nicolas Pitre
2013-08-03 19:25 ` Santosh Shilimkar [this message]
2013-08-04 5:32 ` Nicolas Pitre
2013-08-05 14:38 ` Santosh Shilimkar
2013-08-03 14:05 ` Russell King - ARM Linux
2013-08-03 14:09 ` Russell King - ARM Linux
2013-08-03 19:15 ` Santosh Shilimkar
2013-08-09 19:37 ` Santosh Shilimkar
2013-07-31 16:44 ` [PATCH v2 5/6] ARM: mm: Update runtime patching code to THUMB2 mode Santosh Shilimkar
2013-08-03 3:40 ` Nicolas Pitre
2013-08-03 12:51 ` Sricharan R
2013-07-31 16:44 ` [PATCH v2 6/6] ARM: mm: Recreate kernel mappings in early_paging_init() Santosh Shilimkar
2013-08-03 1:52 ` [PATCH v2 0/6] ARM: mm: Extend the runtime patch stub for PAE systems Nicolas Pitre
2013-08-03 19:02 ` Santosh Shilimkar
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