diff mbox

Fix errornous negation for isstubdom, which breaks HVM pci-passthrough.

Message ID 1481392748-26814-1-git-send-email-linux@eikelenboom.it (mailing list archive)
State New, archived
Headers show

Commit Message

Sander Eikelenboom Dec. 10, 2016, 5:59 p.m. UTC
Commit 20b75251d9721d9c050a973c02baac396c794ade introduced an errornous
negation which gave the isstubdom bool the opposite semantics,
causing the subsequent code to take the wrong code path.

Signed-off-by: Sander Eikelenboom <linux@eikelenboom.it>
---
 tools/libxl/libxl_pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Cedric Bosdonnat Dec. 12, 2016, 8:17 a.m. UTC | #1
Nice catch!
ACK from me, thought I don't know if it really counts ;)

--
Cedric

On Sat, 2016-12-10 at 18:59 +0100, Sander Eikelenboom wrote:
> Commit 20b75251d9721d9c050a973c02baac396c794ade introduced an errornous
> negation which gave the isstubdom bool the opposite semantics,
> causing the subsequent code to take the wrong code path.
> 
> Signed-off-by: Sander Eikelenboom <linux@eikelenboom.it>
> ---
>  tools/libxl/libxl_pci.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/libxl/libxl_pci.c b/tools/libxl/libxl_pci.c
> index 3b707f3..8395352 100644
> --- a/tools/libxl/libxl_pci.c
> +++ b/tools/libxl/libxl_pci.c
> @@ -1001,7 +1001,7 @@ static int do_pci_add(libxl__gc *gc, uint32_t domid, libxl_device_pci *pcidev, i
>      int irq, i, rc, hvm = 0;
>      uint32_t flag = XEN_DOMCTL_DEV_RDM_RELAXED;
>      uint32_t domainid = domid;
> -    bool isstubdom = !libxl_is_stubdom(ctx, domid, &domainid);
> +    bool isstubdom = libxl_is_stubdom(ctx, domid, &domainid);
>  
>      if (type == LIBXL_DOMAIN_TYPE_INVALID)
>          return ERROR_FAIL;
Wei Liu Dec. 12, 2016, 9:14 a.m. UTC | #2
On Sat, Dec 10, 2016 at 06:59:08PM +0100, Sander Eikelenboom wrote:
> Commit 20b75251d9721d9c050a973c02baac396c794ade introduced an errornous
> negation which gave the isstubdom bool the opposite semantics,
> causing the subsequent code to take the wrong code path.
> 
> Signed-off-by: Sander Eikelenboom <linux@eikelenboom.it>

Acked-by: Wei Liu <wei.liu2@citrix.com>

Though I would like to shorten the title a bit. That is, I will move the
clause "which ..." to the end of the commit log.

  Commit 20b75251d9721d9c050a973c02baac396c794ade introduced an
  erroneous negation which gave the isstubdom bool the opposite semantics,
  causing the subsequent code to take the wrong code path, which breaks
  ...

> ---
>  tools/libxl/libxl_pci.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/libxl/libxl_pci.c b/tools/libxl/libxl_pci.c
> index 3b707f3..8395352 100644
> --- a/tools/libxl/libxl_pci.c
> +++ b/tools/libxl/libxl_pci.c
> @@ -1001,7 +1001,7 @@ static int do_pci_add(libxl__gc *gc, uint32_t domid, libxl_device_pci *pcidev, i
>      int irq, i, rc, hvm = 0;
>      uint32_t flag = XEN_DOMCTL_DEV_RDM_RELAXED;
>      uint32_t domainid = domid;
> -    bool isstubdom = !libxl_is_stubdom(ctx, domid, &domainid);
> +    bool isstubdom = libxl_is_stubdom(ctx, domid, &domainid);
>  
>      if (type == LIBXL_DOMAIN_TYPE_INVALID)
>          return ERROR_FAIL;
> -- 
> 2.1.4
>
Wei Liu Dec. 12, 2016, 9:14 a.m. UTC | #3
On Mon, Dec 12, 2016 at 09:17:42AM +0100, Cedric Bosdonnat wrote:
> Nice catch!
> ACK from me, thought I don't know if it really counts ;)
> 

It does.

I will add your acked-by while committing.
Sander Eikelenboom Dec. 12, 2016, 10:16 a.m. UTC | #4
On 12/12/16 10:14, Wei Liu wrote:
> On Sat, Dec 10, 2016 at 06:59:08PM +0100, Sander Eikelenboom wrote:
>> Commit 20b75251d9721d9c050a973c02baac396c794ade introduced an errornous
>> negation which gave the isstubdom bool the opposite semantics,
>> causing the subsequent code to take the wrong code path.
>>
>> Signed-off-by: Sander Eikelenboom <linux@eikelenboom.it>
> 
> Acked-by: Wei Liu <wei.liu2@citrix.com>
> 
> Though I would like to shorten the title a bit. That is, I will move the
> clause "which ..." to the end of the commit log.

Sure, thanks for taking care !

--
Sander

>   Commit 20b75251d9721d9c050a973c02baac396c794ade introduced an
>   erroneous negation which gave the isstubdom bool the opposite semantics,
>   causing the subsequent code to take the wrong code path, which breaks
>   ...
> 
>> ---
>>  tools/libxl/libxl_pci.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/tools/libxl/libxl_pci.c b/tools/libxl/libxl_pci.c
>> index 3b707f3..8395352 100644
>> --- a/tools/libxl/libxl_pci.c
>> +++ b/tools/libxl/libxl_pci.c
>> @@ -1001,7 +1001,7 @@ static int do_pci_add(libxl__gc *gc, uint32_t domid, libxl_device_pci *pcidev, i
>>      int irq, i, rc, hvm = 0;
>>      uint32_t flag = XEN_DOMCTL_DEV_RDM_RELAXED;
>>      uint32_t domainid = domid;
>> -    bool isstubdom = !libxl_is_stubdom(ctx, domid, &domainid);
>> +    bool isstubdom = libxl_is_stubdom(ctx, domid, &domainid);
>>  
>>      if (type == LIBXL_DOMAIN_TYPE_INVALID)
>>          return ERROR_FAIL;
>> -- 
>> 2.1.4
>>
diff mbox

Patch

diff --git a/tools/libxl/libxl_pci.c b/tools/libxl/libxl_pci.c
index 3b707f3..8395352 100644
--- a/tools/libxl/libxl_pci.c
+++ b/tools/libxl/libxl_pci.c
@@ -1001,7 +1001,7 @@  static int do_pci_add(libxl__gc *gc, uint32_t domid, libxl_device_pci *pcidev, i
     int irq, i, rc, hvm = 0;
     uint32_t flag = XEN_DOMCTL_DEV_RDM_RELAXED;
     uint32_t domainid = domid;
-    bool isstubdom = !libxl_is_stubdom(ctx, domid, &domainid);
+    bool isstubdom = libxl_is_stubdom(ctx, domid, &domainid);
 
     if (type == LIBXL_DOMAIN_TYPE_INVALID)
         return ERROR_FAIL;