From: Kefeng Wang <wangkefeng.wang@huawei.com>
To: Heiko Carstens <hca@linux.ibm.com>
Cc: Arnd Bergmann <arnd@arndb.de>, <linux-arch@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, Vasily Gorbik <gor@linux.ibm.com>,
"Christian Borntraeger" <borntraeger@de.ibm.com>,
<linux-s390@vger.kernel.org>
Subject: Re: [PATCH 7/9] s390: kprobes: Use is_kernel() helper
Date: Mon, 28 Jun 2021 19:09:18 +0800 [thread overview]
Message-ID: <33b1d13e-a13c-44e0-bae6-3d8394892bbc@huawei.com> (raw)
In-Reply-To: <YNmeLhfWf3Rs6yRA@osiris>
On 2021/6/28 18:02, Heiko Carstens wrote:
> On Sat, Jun 26, 2021 at 03:34:37PM +0800, Kefeng Wang wrote:
>> Use is_kernel() helper instead of is_kernel_addr().
>>
>> Cc: Heiko Carstens <hca@linux.ibm.com>
>> Cc: Vasily Gorbik <gor@linux.ibm.com>
>> Cc: Christian Borntraeger <borntraeger@de.ibm.com>
>> Cc: linux-s390@vger.kernel.org
>> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
>> ---
>> arch/s390/kernel/kprobes.c | 9 ++-------
>> 1 file changed, 2 insertions(+), 7 deletions(-)
> ...
>> -static inline int is_kernel_addr(void *addr)
>> -{
>> - return addr < (void *)_end;
>> -}
>> -
>> static int s390_get_insn_slot(struct kprobe *p)
>> {
>> /*
>> @@ -105,7 +100,7 @@ static int s390_get_insn_slot(struct kprobe *p)
>> * field can be patched and executed within the insn slot.
>> */
>> p->ainsn.insn = NULL;
>> - if (is_kernel_addr(p->addr))
>> + if (is_kernel(p->addr))
>> p->ainsn.insn = get_s390_insn_slot();
>> else if (is_module_addr(p->addr))
>> p->ainsn.insn = get_insn_slot();
>> @@ -117,7 +112,7 @@ static void s390_free_insn_slot(struct kprobe *p)
>> {
>> if (!p->ainsn.insn)
>> return;
>> - if (is_kernel_addr(p->addr))
>> + if (is_kernel(p->addr))
>> free_s390_insn_slot(p->ainsn.insn, 0);
>> else
>> free_insn_slot(p->ainsn.insn, 0);
> Given that this makes sense its own, and I can't follow the discussion
> of the patch series due to missing cc, I applied this to the s390 tree
> - and also fixed up the missing unsigned long casts.
Thanks Heiko, I got some tips(someone says, not send all patches to all
the people who maybe not care
about the other patches), so I only send this one to you, but the
patches is cc to all the maillist,
and it could be check from
https://lore.kernel.org/linux-arch/20210626073439.150586-1-wangkefeng.wang@huawei.com
>
> Thanks!
> .
>
next prev parent reply other threads:[~2021-06-28 11:09 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-26 7:34 [PATCH 0/9] sections: Unify kernel sections range check and use Kefeng Wang
2021-06-26 7:34 ` [PATCH 1/9] kallsyms: Remove arch specific text and data check Kefeng Wang
2021-06-26 7:34 ` [PATCH 2/9] kallsyms: Fix address-checks for kernel related range Kefeng Wang
2021-07-05 3:35 ` Sergey Senozhatsky
2021-07-07 12:43 ` Petr Mladek
2021-06-26 7:34 ` [PATCH 3/9] sections: Move and rename core_kernel_data() to is_kernel_data() Kefeng Wang
2021-06-29 1:05 ` Steven Rostedt
2021-06-29 6:36 ` Kefeng Wang
2021-06-26 7:34 ` [PATCH 4/9] sections: Move is_kernel_inittext() into sections.h Kefeng Wang
2021-06-26 7:34 ` [PATCH 5/9] kallsyms: Rename is_kernel() and is_kernel_text() Kefeng Wang
2021-06-26 7:34 ` [PATCH 6/9] sections: Add new " Kefeng Wang
2021-06-26 7:34 ` [PATCH 7/9] s390: kprobes: Use is_kernel() helper Kefeng Wang
2021-06-28 10:02 ` Heiko Carstens
2021-06-28 11:09 ` Kefeng Wang [this message]
2021-06-26 7:34 ` [PATCH 8/9] powerpc/mm: Use is_kernel_text() and is_kernel_inittext() helper Kefeng Wang
2021-06-26 7:34 ` [PATCH 9/9] dma-debug: Use memory_intersects() directly Kefeng Wang
2021-06-28 6:11 ` Christoph Hellwig
2021-06-28 6:29 ` Kefeng Wang
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