[PATCH] KVM: X86: Use octal for file permission

[PATCH] KVM: X86: Use octal for file permission

[Hao Peng]

From: Peng Hao <flyingpeng@tencent.com>

Improve code readability and checkpatch warnings:
  WARNING: Symbolic permissions 'S_IRUGO' are not preferred. Consider
using octal permissions '0444'.

Signed-off-by: Peng Hao <flyingpeng@tencent.com>
---
 arch/x86/kvm/x86.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index e3412091505d..8c1190a5d09b 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -145,21 +145,21 @@ EXPORT_STATIC_CALL_GPL(kvm_x86_get_cs_db_l_bits);
 EXPORT_STATIC_CALL_GPL(kvm_x86_cache_reg);

 static bool __read_mostly ignore_msrs = 0;
-module_param(ignore_msrs, bool, S_IRUGO | S_IWUSR);
+module_param(ignore_msrs, bool, 0644);

 bool __read_mostly report_ignored_msrs = true;
-module_param(report_ignored_msrs, bool, S_IRUGO | S_IWUSR);
+module_param(report_ignored_msrs, bool, 0644);
 EXPORT_SYMBOL_GPL(report_ignored_msrs);

 unsigned int min_timer_period_us = 200;
-module_param(min_timer_period_us, uint, S_IRUGO | S_IWUSR);
+module_param(min_timer_period_us, uint, 0644);

 static bool __read_mostly kvmclock_periodic_sync = true;
-module_param(kvmclock_periodic_sync, bool, S_IRUGO);
+module_param(kvmclock_periodic_sync, bool, 0444);

 /* tsc tolerance in parts per million - default to 1/2 of the NTP threshold */
 static u32 __read_mostly tsc_tolerance_ppm = 250;
-module_param(tsc_tolerance_ppm, uint, S_IRUGO | S_IWUSR);
+module_param(tsc_tolerance_ppm, uint, 0644);

 /*
  * lapic timer advance (tscdeadline mode only) in nanoseconds.  '-1' enables
@@ -168,13 +168,13 @@ module_param(tsc_tolerance_ppm, uint, S_IRUGO | S_IWUSR);
  * tuning, i.e. allows privileged userspace to set an exact advancement time.
  */
 static int __read_mostly lapic_timer_advance_ns = -1;
-module_param(lapic_timer_advance_ns, int, S_IRUGO | S_IWUSR);
+module_param(lapic_timer_advance_ns, int, 0644);

 static bool __read_mostly vector_hashing = true;
-module_param(vector_hashing, bool, S_IRUGO);
+module_param(vector_hashing, bool, 0444);
 bool __read_mostly enable_vmware_backdoor = false;
-module_param(enable_vmware_backdoor, bool, S_IRUGO);
+module_param(enable_vmware_backdoor, bool, 0444);
 EXPORT_SYMBOL_GPL(enable_vmware_backdoor);

 /*
@@ -186,7 +186,7 @@ static int __read_mostly force_emulation_prefix;
 module_param(force_emulation_prefix, int, 0644);

 int __read_mostly pi_inject_timer = -1;
-module_param(pi_inject_timer, bint, S_IRUGO | S_IWUSR);
+module_param(pi_inject_timer, bint, 0644);

 /* Enable/disable PMU virtualization */
 bool __read_mostly enable_pmu = true;
--
2.31.1

Re: [PATCH] KVM: X86: Use octal for file permission

[Sean Christopherson]

KVM: x86: (don't capitalize the 'x')

On Tue, Sep 19, 2023, Hao Peng wrote:
> From: Peng Hao <flyingpeng@tencent.com>
> 
> Improve code readability and checkpatch warnings:
>   WARNING: Symbolic permissions 'S_IRUGO' are not preferred. Consider
> using octal permissions '0444'.
> 
> Signed-off-by: Peng Hao <flyingpeng@tencent.com>
> ---
>  arch/x86/kvm/x86.c | 18 +++++++++---------

If we're going to do this, let's do all of x86/kvm in one patch, i.e. clean up
VMX and SVM too.

I generally don't like checkpatch-initiated cleanups, but I vote to go ahead with
this one.  I look at the params just often enough that not having to parse the
#defines would add real value for me.

Any objections?