diff mbox

[PATCHv5,2/4] x86: Add build salt to the vDSO

Message ID 20180703233430.14416-3-labbott@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Laura Abbott July 3, 2018, 11:34 p.m. UTC
The vDSO needs to have a unique build id in a similar manner
to the kernel and modules. Use the build salt macro.

Signed-off-by: Laura Abbott <labbott@redhat.com>
---
v5: Switched to using the single line BUILD_SALT macro
---
 arch/x86/entry/vdso/vdso-note.S   | 3 +++
 arch/x86/entry/vdso/vdso32/note.S | 3 +++
 2 files changed, 6 insertions(+)

Comments

Andy Lutomirski July 5, 2018, 3:58 p.m. UTC | #1
On Tue, Jul 3, 2018 at 4:34 PM, Laura Abbott <labbott@redhat.com> wrote:
>
> The vDSO needs to have a unique build id in a similar manner
> to the kernel and modules. Use the build salt macro.
>

Looks good to me.  I have no idea whose tree these would go through.

> Signed-off-by: Laura Abbott <labbott@redhat.com>
> ---
> v5: Switched to using the single line BUILD_SALT macro
> ---
>  arch/x86/entry/vdso/vdso-note.S   | 3 +++
>  arch/x86/entry/vdso/vdso32/note.S | 3 +++
>  2 files changed, 6 insertions(+)
>
> diff --git a/arch/x86/entry/vdso/vdso-note.S b/arch/x86/entry/vdso/vdso-note.S
> index 79a071e4357e..79423170118f 100644
> --- a/arch/x86/entry/vdso/vdso-note.S
> +++ b/arch/x86/entry/vdso/vdso-note.S
> @@ -3,6 +3,7 @@
>   * Here we can supply some information useful to userland.
>   */
>
> +#include <linux/build-salt.h>
>  #include <linux/uts.h>
>  #include <linux/version.h>
>  #include <linux/elfnote.h>
> @@ -10,3 +11,5 @@
>  ELFNOTE_START(Linux, 0, "a")
>         .long LINUX_VERSION_CODE
>  ELFNOTE_END
> +
> +BUILD_SALT
> diff --git a/arch/x86/entry/vdso/vdso32/note.S b/arch/x86/entry/vdso/vdso32/note.S
> index 9fd51f206314..e78047d119f6 100644
> --- a/arch/x86/entry/vdso/vdso32/note.S
> +++ b/arch/x86/entry/vdso/vdso32/note.S
> @@ -4,6 +4,7 @@
>   * Here we can supply some information useful to userland.
>   */
>
> +#include <linux/build-salt.h>
>  #include <linux/version.h>
>  #include <linux/elfnote.h>
>
> @@ -14,6 +15,8 @@ ELFNOTE_START(Linux, 0, "a")
>         .long LINUX_VERSION_CODE
>  ELFNOTE_END
>
> +BUILD_SALT
> +
>  #ifdef CONFIG_XEN
>  /*
>   * Add a special note telling glibc's dynamic linker a fake hardware
> --
> 2.17.1
>
Laura Abbott July 5, 2018, 7:08 p.m. UTC | #2
On 07/05/2018 08:58 AM, Andy Lutomirski wrote:
> On Tue, Jul 3, 2018 at 4:34 PM, Laura Abbott <labbott@redhat.com> wrote:
>>
>> The vDSO needs to have a unique build id in a similar manner
>> to the kernel and modules. Use the build salt macro.
>>
> 
> Looks good to me.  I have no idea whose tree these would go through.
> 

I was intending this to go through kbuild tree. Can I take this
as an Ack?

>> Signed-off-by: Laura Abbott <labbott@redhat.com>
>> ---
>> v5: Switched to using the single line BUILD_SALT macro
>> ---
>>   arch/x86/entry/vdso/vdso-note.S   | 3 +++
>>   arch/x86/entry/vdso/vdso32/note.S | 3 +++
>>   2 files changed, 6 insertions(+)
>>
>> diff --git a/arch/x86/entry/vdso/vdso-note.S b/arch/x86/entry/vdso/vdso-note.S
>> index 79a071e4357e..79423170118f 100644
>> --- a/arch/x86/entry/vdso/vdso-note.S
>> +++ b/arch/x86/entry/vdso/vdso-note.S
>> @@ -3,6 +3,7 @@
>>    * Here we can supply some information useful to userland.
>>    */
>>
>> +#include <linux/build-salt.h>
>>   #include <linux/uts.h>
>>   #include <linux/version.h>
>>   #include <linux/elfnote.h>
>> @@ -10,3 +11,5 @@
>>   ELFNOTE_START(Linux, 0, "a")
>>          .long LINUX_VERSION_CODE
>>   ELFNOTE_END
>> +
>> +BUILD_SALT
>> diff --git a/arch/x86/entry/vdso/vdso32/note.S b/arch/x86/entry/vdso/vdso32/note.S
>> index 9fd51f206314..e78047d119f6 100644
>> --- a/arch/x86/entry/vdso/vdso32/note.S
>> +++ b/arch/x86/entry/vdso/vdso32/note.S
>> @@ -4,6 +4,7 @@
>>    * Here we can supply some information useful to userland.
>>    */
>>
>> +#include <linux/build-salt.h>
>>   #include <linux/version.h>
>>   #include <linux/elfnote.h>
>>
>> @@ -14,6 +15,8 @@ ELFNOTE_START(Linux, 0, "a")
>>          .long LINUX_VERSION_CODE
>>   ELFNOTE_END
>>
>> +BUILD_SALT
>> +
>>   #ifdef CONFIG_XEN
>>   /*
>>    * Add a special note telling glibc's dynamic linker a fake hardware
>> --
>> 2.17.1
>>
Andy Lutomirski July 5, 2018, 9:46 p.m. UTC | #3
Sure.

On Thu, Jul 5, 2018 at 12:08 PM, Laura Abbott <labbott@redhat.com> wrote:
> On 07/05/2018 08:58 AM, Andy Lutomirski wrote:
>>
>> On Tue, Jul 3, 2018 at 4:34 PM, Laura Abbott <labbott@redhat.com> wrote:
>>>
>>>
>>> The vDSO needs to have a unique build id in a similar manner
>>> to the kernel and modules. Use the build salt macro.
>>>
>>
>> Looks good to me.  I have no idea whose tree these would go through.
>>
>
> I was intending this to go through kbuild tree. Can I take this
> as an Ack?
>
>
>>> Signed-off-by: Laura Abbott <labbott@redhat.com>
>>> ---
>>> v5: Switched to using the single line BUILD_SALT macro
>>> ---
>>>   arch/x86/entry/vdso/vdso-note.S   | 3 +++
>>>   arch/x86/entry/vdso/vdso32/note.S | 3 +++
>>>   2 files changed, 6 insertions(+)
>>>
>>> diff --git a/arch/x86/entry/vdso/vdso-note.S
>>> b/arch/x86/entry/vdso/vdso-note.S
>>> index 79a071e4357e..79423170118f 100644
>>> --- a/arch/x86/entry/vdso/vdso-note.S
>>> +++ b/arch/x86/entry/vdso/vdso-note.S
>>> @@ -3,6 +3,7 @@
>>>    * Here we can supply some information useful to userland.
>>>    */
>>>
>>> +#include <linux/build-salt.h>
>>>   #include <linux/uts.h>
>>>   #include <linux/version.h>
>>>   #include <linux/elfnote.h>
>>> @@ -10,3 +11,5 @@
>>>   ELFNOTE_START(Linux, 0, "a")
>>>          .long LINUX_VERSION_CODE
>>>   ELFNOTE_END
>>> +
>>> +BUILD_SALT
>>> diff --git a/arch/x86/entry/vdso/vdso32/note.S
>>> b/arch/x86/entry/vdso/vdso32/note.S
>>> index 9fd51f206314..e78047d119f6 100644
>>> --- a/arch/x86/entry/vdso/vdso32/note.S
>>> +++ b/arch/x86/entry/vdso/vdso32/note.S
>>> @@ -4,6 +4,7 @@
>>>    * Here we can supply some information useful to userland.
>>>    */
>>>
>>> +#include <linux/build-salt.h>
>>>   #include <linux/version.h>
>>>   #include <linux/elfnote.h>
>>>
>>> @@ -14,6 +15,8 @@ ELFNOTE_START(Linux, 0, "a")
>>>          .long LINUX_VERSION_CODE
>>>   ELFNOTE_END
>>>
>>> +BUILD_SALT
>>> +
>>>   #ifdef CONFIG_XEN
>>>   /*
>>>    * Add a special note telling glibc's dynamic linker a fake hardware
>>> --
>>> 2.17.1
>>>
>
diff mbox

Patch

diff --git a/arch/x86/entry/vdso/vdso-note.S b/arch/x86/entry/vdso/vdso-note.S
index 79a071e4357e..79423170118f 100644
--- a/arch/x86/entry/vdso/vdso-note.S
+++ b/arch/x86/entry/vdso/vdso-note.S
@@ -3,6 +3,7 @@ 
  * Here we can supply some information useful to userland.
  */
 
+#include <linux/build-salt.h>
 #include <linux/uts.h>
 #include <linux/version.h>
 #include <linux/elfnote.h>
@@ -10,3 +11,5 @@ 
 ELFNOTE_START(Linux, 0, "a")
 	.long LINUX_VERSION_CODE
 ELFNOTE_END
+
+BUILD_SALT
diff --git a/arch/x86/entry/vdso/vdso32/note.S b/arch/x86/entry/vdso/vdso32/note.S
index 9fd51f206314..e78047d119f6 100644
--- a/arch/x86/entry/vdso/vdso32/note.S
+++ b/arch/x86/entry/vdso/vdso32/note.S
@@ -4,6 +4,7 @@ 
  * Here we can supply some information useful to userland.
  */
 
+#include <linux/build-salt.h>
 #include <linux/version.h>
 #include <linux/elfnote.h>
 
@@ -14,6 +15,8 @@  ELFNOTE_START(Linux, 0, "a")
 	.long LINUX_VERSION_CODE
 ELFNOTE_END
 
+BUILD_SALT
+
 #ifdef CONFIG_XEN
 /*
  * Add a special note telling glibc's dynamic linker a fake hardware