From: Chao Fan <fanc.fnst@cn.fujitsu.com>
To: Baoquan He <bhe@redhat.com>
Cc: <linux-kernel@vger.kernel.org>, <x86@kernel.org>, <hpa@zytor.com>,
<tglx@linutronix.de>, <mingo@redhat.com>, <keescook@chromium.org>,
<yasu.isimatu@gmail.com>, <indou.takao@jp.fujitsu.com>,
<lcapitulino@redhat.com>
Subject: Re: [PATCH v7 4/5] x86/KASLR: Skip memory mirror handling if movable_node specified
Date: Thu, 18 Jan 2018 09:13:57 +0800 [thread overview]
Message-ID: <20180118011356.GB24593@localhost.localdomain> (raw)
In-Reply-To: <20180117140354.GH2321@localhost.localdomain>
On Wed, Jan 17, 2018 at 10:03:54PM +0800, Baoquan He wrote:
>On 01/17/18 at 06:53pm, Chao Fan wrote:
>> In kernel code, if movable_node specified, it will skip the mirror
>> feature. So we should also skip mirror feature in KASLR.
>>
>> Signed-off-by: Chao Fan <fanc.fnst@cn.fujitsu.com>
>> ---
>> arch/x86/boot/compressed/kaslr.c | 7 +++++++
>> 1 file changed, 7 insertions(+)
>>
>> diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c
>> index dca846b522fc..84b9db26d026 100644
>> --- a/arch/x86/boot/compressed/kaslr.c
>> +++ b/arch/x86/boot/compressed/kaslr.c
>> @@ -692,6 +692,7 @@ static bool
>> process_efi_entries(unsigned long minimum, unsigned long image_size)
>> {
>> struct efi_info *e = &boot_params->efi_info;
>> + char *args = (char *)get_cmd_line_ptr();
>> bool efi_mirror_found = false;
>> struct mem_vector region;
>> efi_memory_desc_t *md;
>> @@ -725,6 +726,12 @@ process_efi_entries(unsigned long minimum, unsigned long image_size)
>> }
>> }
>>
>> +#ifdef CONFIG_MEMORY_HOTPLUG
>> + /* Skip memory mirror if movabale_node or immovable_mem specified */
> ~~~~~~~~~~~~~
> ^^ need be removed?
Yes, sorry for the mistake, I change the old versions and miss some
points. Will change that.
Thanks,
Chao Fan
>> + if (strstr(args, "movable_node"))
>> + efi_mirror_found = false;
>> +#endif
>> +
>> for (i = 0; i < nr_desc; i++) {
>> md = efi_early_memdesc_ptr(pmap, e->efi_memdesc_size, i);
>>
>> --
>> 2.14.3
>>
>>
>>
>
>
next prev parent reply other threads:[~2018-01-18 1:15 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-17 10:53 [PATCH v7 0/5] x86/KASLR: Add parameter kaslr_mem=nn[KMG]@ss[KMG] Chao Fan
2018-01-17 10:53 ` [PATCH v7 1/5] x86/KASLR: Add kaslr_mem=nn[KMG]@ss[KMG] Chao Fan
2018-01-19 2:34 ` Baoquan He
2018-01-17 10:53 ` [PATCH v7 2/5] x86/KASLR: Handle the memory regions specified in kaslr_mem Chao Fan
2018-01-19 2:39 ` Baoquan He
2018-01-17 10:53 ` [PATCH v7 3/5] x86/KASLR: Give a warning if movable_node specified without kaslr_mem= Chao Fan
2018-01-17 14:02 ` Baoquan He
2018-01-18 1:20 ` Chao Fan
2018-01-17 14:04 ` Baoquan He
2018-01-19 3:31 ` [PATCH v8 " Chao Fan
2018-01-19 3:48 ` Baoquan He
2018-01-17 10:53 ` [PATCH v7 4/5] x86/KASLR: Skip memory mirror handling if movable_node specified Chao Fan
2018-01-17 14:03 ` Baoquan He
2018-01-18 1:13 ` Chao Fan [this message]
2018-01-19 3:33 ` [PATCH v8 " Chao Fan
2018-01-19 3:47 ` Baoquan He
2018-01-17 10:53 ` [PATCH v7 5/5] document: add document for kaslr_mem Chao Fan
2018-01-19 3:00 ` Baoquan He
2018-01-19 3:36 ` [PATCH v8 " Chao Fan
2018-01-19 3:53 ` Baoquan He
2018-01-19 5:27 ` Chao Fan
2018-01-19 5:23 ` [RESEND PATCH " Chao Fan
2018-01-19 18:20 ` Randy Dunlap
2018-01-17 17:32 ` [PATCH v7 0/5] x86/KASLR: Add parameter kaslr_mem=nn[KMG]@ss[KMG] Luiz Capitulino
2018-01-18 1:11 ` Chao Fan
2018-01-18 13:39 ` Luiz Capitulino
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