diff mbox series

[XEN,v2,03/13] x86/svm: fix violations of MISRA C:2012 Rule 7.2

Message ID 015d7c13dc4e1b481abb23a3eaa254e316b7ca53.1688559115.git.gianluca.luparini@bugseng.com (mailing list archive)
State Superseded
Headers show
Series xen: fix violations of MISRA C:2012 Rule 7.2 | expand

Commit Message

Simone Ballarin July 5, 2023, 3:26 p.m. UTC 
From: Gianluca Luparini <gianluca.luparini@bugseng.com>

The xen sources contains violations of MISRA C:2012 Rule 7.2 whose
headline states:
"A 'u' or 'U' suffix shall be applied to all integer constants
that are represented in an unsigned type".

Add the 'U' suffix to integers literals with unsigned type and also to other
literals used in the same contexts or near violations, when their positive
nature is immediately clear. The latter changes are done for the sake of
uniformity.

Signed-off-by: Simone Ballarin <simone.ballarin@bugseng.com>
Signed-off-by: Gianluca Luparini <gianluca.luparini@bugseng.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
---
Changes in v2:
- change commit title to make it unique
- change commit message
---
 xen/arch/x86/hvm/svm/asid.c | 2 +-
 xen/arch/x86/hvm/svm/svm.c  | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

Comments

Jan Beulich July 6, 2023, 7:52 a.m. UTC | #1 
On 05.07.2023 17:26, Simone Ballarin wrote:
> From: Gianluca Luparini <gianluca.luparini@bugseng.com>
> 
> The xen sources contains violations of MISRA C:2012 Rule 7.2 whose
> headline states:
> "A 'u' or 'U' suffix shall be applied to all integer constants
> that are represented in an unsigned type".
> 
> Add the 'U' suffix to integers literals with unsigned type and also to other
> literals used in the same contexts or near violations, when their positive
> nature is immediately clear. The latter changes are done for the sake of
> uniformity.
> 
> Signed-off-by: Simone Ballarin <simone.ballarin@bugseng.com>
> Signed-off-by: Gianluca Luparini <gianluca.luparini@bugseng.com>
> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>

Acked-by: Jan Beulich <jbeulich@suse.com>
albeit ...

> --- a/xen/arch/x86/hvm/svm/asid.c
> +++ b/xen/arch/x86/hvm/svm/asid.c
> @@ -16,7 +16,7 @@ void svm_asid_init(const struct cpuinfo_x86 *c)
>  
>      /* Check for erratum #170, and leave ASIDs disabled if it's present. */
>      if ( !cpu_has_amd_erratum(c, AMD_ERRATUM_170) )
> -        nasids = cpuid_ebx(0x8000000A);
> +        nasids = cpuid_ebx(0x8000000AU);

... I guess it would be nice to also change A to a here, to match ...

> --- a/xen/arch/x86/hvm/svm/svm.c
> +++ b/xen/arch/x86/hvm/svm/svm.c
> @@ -269,9 +269,9 @@ svm_msrbit(unsigned long *msr_bitmap, uint32_t msr)
>       */
>      if ( msr <= 0x1fff )
>          msr_bit = msr_bitmap + 0x0000 / BYTES_PER_LONG;
> -    else if ( (msr >= 0xc0000000) && (msr <= 0xc0001fff) )
> +    else if ( (msr >= 0xc0000000U) && (msr <= 0xc0001fffU) )
>          msr_bit = msr_bitmap + 0x0800 / BYTES_PER_LONG;
> -    else if ( (msr >= 0xc0010000) && (msr <= 0xc0011fff) )
> +    else if ( (msr >= 0xc0010000U) && (msr <= 0xc0011fffU) )
>          msr_bit = msr_bitmap + 0x1000 / BYTES_PER_LONG;
>  
>      return msr_bit;
> @@ -2539,8 +2539,8 @@ const struct hvm_function_table * __init start_svm(void)
>  
>      setup_vmcb_dump();
>  
> -    if ( boot_cpu_data.extended_cpuid_level >= 0x8000000a )
> -        svm_feature_flags = cpuid_edx(0x8000000a);
> +    if ( boot_cpu_data.extended_cpuid_level >= 0x8000000aU )
> +        svm_feature_flags = cpuid_edx(0x8000000aU);
>  
>      printk("SVM: Supported advanced features:\n");
>  

... other (similar and dissimilar) constants used (and adjusted).
I guess I'll take the liberty to make this adjustment while
committing.

Jan
diff mbox series

Patch

diff --git a/xen/arch/x86/hvm/svm/asid.c b/xen/arch/x86/hvm/svm/asid.c
index 09f8c23fd9..56306d1a16 100644
--- a/xen/arch/x86/hvm/svm/asid.c
+++ b/xen/arch/x86/hvm/svm/asid.c
@@ -16,7 +16,7 @@  void svm_asid_init(const struct cpuinfo_x86 *c)
 
     /* Check for erratum #170, and leave ASIDs disabled if it's present. */
     if ( !cpu_has_amd_erratum(c, AMD_ERRATUM_170) )
-        nasids = cpuid_ebx(0x8000000A);
+        nasids = cpuid_ebx(0x8000000AU);
 
     hvm_asid_init(nasids);
 }
diff --git a/xen/arch/x86/hvm/svm/svm.c b/xen/arch/x86/hvm/svm/svm.c
index 59a6e88dff..56cb2f61bb 100644
--- a/xen/arch/x86/hvm/svm/svm.c
+++ b/xen/arch/x86/hvm/svm/svm.c
@@ -269,9 +269,9 @@  svm_msrbit(unsigned long *msr_bitmap, uint32_t msr)
      */
     if ( msr <= 0x1fff )
         msr_bit = msr_bitmap + 0x0000 / BYTES_PER_LONG;
-    else if ( (msr >= 0xc0000000) && (msr <= 0xc0001fff) )
+    else if ( (msr >= 0xc0000000U) && (msr <= 0xc0001fffU) )
         msr_bit = msr_bitmap + 0x0800 / BYTES_PER_LONG;
-    else if ( (msr >= 0xc0010000) && (msr <= 0xc0011fff) )
+    else if ( (msr >= 0xc0010000U) && (msr <= 0xc0011fffU) )
         msr_bit = msr_bitmap + 0x1000 / BYTES_PER_LONG;
 
     return msr_bit;
@@ -2539,8 +2539,8 @@  const struct hvm_function_table * __init start_svm(void)
 
     setup_vmcb_dump();
 
-    if ( boot_cpu_data.extended_cpuid_level >= 0x8000000a )
-        svm_feature_flags = cpuid_edx(0x8000000a);
+    if ( boot_cpu_data.extended_cpuid_level >= 0x8000000aU )
+        svm_feature_flags = cpuid_edx(0x8000000aU);
 
     printk("SVM: Supported advanced features:\n");