From: will.deacon@arm•com (Will Deacon)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCHv4 2/2] arm64: Add CONFIG_DEBUG_SET_MODULE_RONX support
Date: Mon, 1 Sep 2014 16:45:29 +0100 [thread overview]
Message-ID: <20140901154529.GF24594@arm.com> (raw)
In-Reply-To: <540493DC.20909@codeaurora.org>
On Mon, Sep 01, 2014 at 04:42:20PM +0100, Laura Abbott wrote:
> On 8/26/2014 7:40 AM, Catalin Marinas wrote:
> > On Tue, Aug 19, 2014 at 08:41:43PM +0100, Laura Abbott wrote:
> >> --- /dev/null
> >> +++ b/arch/arm64/mm/pageattr.c
> > [...]
> >> +static int change_memory_common(unsigned long addr, int numpages,
> >> + pgprot_t set_mask, pgprot_t clear_mask)
> >> +{
> >> + unsigned long start = addr;
> >> + unsigned long size = PAGE_SIZE*numpages;
> >> + unsigned long end = start + size;
> >> + int ret;
> >> + struct page_change_data data;
> >> +
> >> + if (!IS_ALIGNED(addr, PAGE_SIZE)) {
> >> + addr &= PAGE_MASK;
> >> + WARN_ON_ONCE(1);
> >> + }
> >> +
> >> + if (!is_module_address(start) || !is_module_address(end))
> >> + return -EINVAL;
> >
> > Minor thing, "end" is exclusive here. Do you still get the right check
> > with is_module_address(end)?
> >
>
> No, You are correct. I'll talk to Will to get that fixed up.
I already had a crack at fixing it:
https://git.kernel.org/cgit/linux/kernel/git/arm64/linux.git/commit/?h=devel&id=a8b974874c4770860c2a356adb9397d38f6c2b70
How did I do?
Will
next prev parent reply other threads:[~2014-09-01 15:45 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-19 19:41 [PATCHv4 0/2] arm64 CONFIG_DEBUG_SET_MODULE_RONX support Laura Abbott
2014-08-19 19:41 ` [PATCHv4 1/2] arm64: Introduce {set,clear}_pte_bit Laura Abbott
2014-08-26 14:27 ` Catalin Marinas
2014-08-26 20:15 ` Laura Abbott
2014-08-27 8:07 ` Will Deacon
2014-09-01 15:42 ` Laura Abbott
2014-08-19 19:41 ` [PATCHv4 2/2] arm64: Add CONFIG_DEBUG_SET_MODULE_RONX support Laura Abbott
2014-08-26 14:40 ` Catalin Marinas
2014-09-01 15:42 ` Laura Abbott
2014-09-01 15:45 ` Will Deacon [this message]
2014-09-10 3:58 ` Zi Shen Lim
2014-09-10 8:47 ` Will Deacon
2014-09-11 4:42 ` Laura Abbott
2014-09-11 22:10 ` [PATCH] arm64: pageattr: Correctly adjust unaligned start addresses Laura Abbott
2014-09-12 3:40 ` Z Lim
2014-09-12 15:36 ` Catalin Marinas
2014-08-22 17:36 ` [PATCHv4 0/2] arm64 CONFIG_DEBUG_SET_MODULE_RONX support Will Deacon
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