Re: [edk2] [PATCH V2] UefiCpuPkg: Check invalid RegisterCpuFeature parameter
Hi All, Thanks for your suggestion, I will update a V3 patch. Best Regards, Bell Song From: Fan Jeff [mailto:vanjeff_...@hotmail.com] Sent: Wednesday, December 13, 2017 11:35 PM To: Ni, Ruiyu ; Laszlo Ersek ; Song, BinX ; edk2-devel@lists.01.org Cc: Dong, Eric Subject: 答复: [edk2] [PATCH V2] UefiCpuPkg: Check invalid RegisterCpuFeature parameter I agree to add one _MAX #define in library instance implementation instead of in class header file. Jeff From: edk2-devel mailto:edk2-devel-boun...@lists.01.org>> on behalf of Ni, Ruiyu mailto:ruiyu...@intel.com>> Sent: Wednesday, December 13, 2017 4:49:01 PM To: Laszlo Ersek; Song, BinX; edk2-devel@lists.01.org<mailto:edk2-devel@lists.01.org> Cc: Dong, Eric Subject: Re: [edk2] [PATCH V2] UefiCpuPkg: Check invalid RegisterCpuFeature parameter On 12/13/2017 4:44 PM, Laszlo Ersek wrote: > On 12/13/17 03:35, Song, BinX wrote: >> V2: >> Update function name, add more detail description. >> V1: >> Check and assert invalid RegisterCpuFeature function parameter >> >> Cc: Eric Dong mailto:eric.d...@intel.com>> >> Cc: Laszlo Ersek mailto:ler...@redhat.com>> >> Contributed-under: TianoCore Contribution Agreement 1.1 >> Signed-off-by: Bell Song mailto:binx.s...@intel.com>> >> --- >> .../Include/Library/RegisterCpuFeaturesLib.h | 5 >> .../RegisterCpuFeaturesLib.c | 29 >> ++ >> 2 files changed, 34 insertions(+) >> >> diff --git a/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h >> b/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h >> index 9331e49..fc3ccda 100644 >> --- a/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h >> +++ b/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h >> @@ -71,6 +71,11 @@ >> #define CPU_FEATURE_APIC_TPR_UPDATE_MESSAGE (32+9) >> #define CPU_FEATURE_ENERGY_PERFORMANCE_BIAS (32+10) >> #define CPU_FEATURE_PPIN(32+11) >> +// >> +// Currently, CPU_FEATURE_PROC_TRACE is the MAX feature we support. >> +// If you define a feature bigger than it, please also replace it >> +// in RegisterCpuFeatureLibIsFeatureValid function. >> +// >> #define CPU_FEATURE_PROC_TRACE (32+12) >> >> #define CPU_FEATURE_BEFORE_ALL BIT27 >> diff --git >> a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c >> b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c >> index dd6a82b..6ec26e1 100644 >> --- a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c >> +++ b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c >> @@ -81,6 +81,34 @@ DumpCpuFeature ( >> } >> >> /** >> + Determines if the CPU feature is valid. >> + >> + @param[in] FeaturePointer to CPU feature >> + >> + @retval TRUE The CPU feature is valid. >> + @retval FALSE The CPU feature is invalid. >> +**/ >> +BOOLEAN >> +RegisterCpuFeatureLibIsFeatureValid ( >> + IN UINT32Feature >> + ) >> +{ >> + UINT32 Data; >> + >> + Data = Feature; >> + Data &= ~(CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER | CPU_FEATURE_BEFORE_ALL >> | CPU_FEATURE_AFTER_ALL); >> + // >> + // Currently, CPU_FEATURE_PROC_TRACE is the MAX feature we support. >> + // If you define a feature bigger than it, please replace it at below. >> + // >> + if (Data > CPU_FEATURE_PROC_TRACE) { >> +DEBUG ((DEBUG_ERROR, "Invalid CPU feature: 0x%x ", Feature)); >> +return FALSE; >> + } >> + return TRUE; >> +} >> + >> +/** >> Determines if the feature bit mask is in dependent CPU feature bit mask >> buffer. >> >> @param[in] FeatureMaskPointer to CPU feature bit mask >> @@ -444,6 +472,7 @@ RegisterCpuFeature ( >> >> VA_START (Marker, InitializeFunc); >> Feature = VA_ARG (Marker, UINT32); >> + ASSERT (RegisterCpuFeatureLibIsFeatureValid(Feature)); >> while (Feature != CPU_FEATURE_END) { >> ASSERT ((Feature & (CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER)) >> != (CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER)); >> > > The consensus thus far seems to be that we should not add a separate > _MAX macro for this purpose. I don't understand why -- in my opinion it > would be easier to update the macro in one place only. > > Now, I realize we have a library class header file here, and a library > instance. Those things are separat
Re: [edk2] [PATCH V2] UefiCpuPkg: Check invalid RegisterCpuFeature parameter
On 12/13/2017 4:44 PM, Laszlo Ersek wrote: On 12/13/17 03:35, Song, BinX wrote: V2: Update function name, add more detail description. V1: Check and assert invalid RegisterCpuFeature function parameter Cc: Eric Dong Cc: Laszlo Ersek Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Bell Song --- .../Include/Library/RegisterCpuFeaturesLib.h | 5 .../RegisterCpuFeaturesLib.c | 29 ++ 2 files changed, 34 insertions(+) diff --git a/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h b/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h index 9331e49..fc3ccda 100644 --- a/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h +++ b/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h @@ -71,6 +71,11 @@ #define CPU_FEATURE_APIC_TPR_UPDATE_MESSAGE (32+9) #define CPU_FEATURE_ENERGY_PERFORMANCE_BIAS (32+10) #define CPU_FEATURE_PPIN(32+11) +// +// Currently, CPU_FEATURE_PROC_TRACE is the MAX feature we support. +// If you define a feature bigger than it, please also replace it +// in RegisterCpuFeatureLibIsFeatureValid function. +// #define CPU_FEATURE_PROC_TRACE (32+12) #define CPU_FEATURE_BEFORE_ALL BIT27 diff --git a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c index dd6a82b..6ec26e1 100644 --- a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c +++ b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c @@ -81,6 +81,34 @@ DumpCpuFeature ( } /** + Determines if the CPU feature is valid. + + @param[in] FeaturePointer to CPU feature + + @retval TRUE The CPU feature is valid. + @retval FALSE The CPU feature is invalid. +**/ +BOOLEAN +RegisterCpuFeatureLibIsFeatureValid ( + IN UINT32Feature + ) +{ + UINT32 Data; + + Data = Feature; + Data &= ~(CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER | CPU_FEATURE_BEFORE_ALL | CPU_FEATURE_AFTER_ALL); + // + // Currently, CPU_FEATURE_PROC_TRACE is the MAX feature we support. + // If you define a feature bigger than it, please replace it at below. + // + if (Data > CPU_FEATURE_PROC_TRACE) { +DEBUG ((DEBUG_ERROR, "Invalid CPU feature: 0x%x ", Feature)); +return FALSE; + } + return TRUE; +} + +/** Determines if the feature bit mask is in dependent CPU feature bit mask buffer. @param[in] FeatureMaskPointer to CPU feature bit mask @@ -444,6 +472,7 @@ RegisterCpuFeature ( VA_START (Marker, InitializeFunc); Feature = VA_ARG (Marker, UINT32); + ASSERT (RegisterCpuFeatureLibIsFeatureValid(Feature)); while (Feature != CPU_FEATURE_END) { ASSERT ((Feature & (CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER)) != (CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER)); The consensus thus far seems to be that we should not add a separate _MAX macro for this purpose. I don't understand why -- in my opinion it would be easier to update the macro in one place only. Now, I realize we have a library class header file here, and a library instance. Those things are separate; it is conceivable that another library instance is developed independently, and thus we should not tie the MAX feature of *all* library instances to the same central class header. However, this separation is already being violated in this patch: the RegisterCpuFeatureLibIsFeatureValid() function is an implementation detail of the (currently only one) library instance. Thus, the lib class header should not refer to it, even in a comment. So, I don't understand why we can't just add a _MAX macro. The central library instance could use _MAX; all other (out of tree) instances would not use _MAX. I do not understand either:) But if the change doesn't expose more interfaces (_MAX in this case), I feel safe because we can change much freely in future. Anyway, this doesn't mean the patch is not correct. Acked-by: Laszlo Ersek Thanks Laszlo ___ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel -- Thanks, Ray ___ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
Re: [edk2] [PATCH V2] UefiCpuPkg: Check invalid RegisterCpuFeature parameter
On 12/13/17 03:35, Song, BinX wrote: > V2: > Update function name, add more detail description. > V1: > Check and assert invalid RegisterCpuFeature function parameter > > Cc: Eric Dong > Cc: Laszlo Ersek > Contributed-under: TianoCore Contribution Agreement 1.1 > Signed-off-by: Bell Song > --- > .../Include/Library/RegisterCpuFeaturesLib.h | 5 > .../RegisterCpuFeaturesLib.c | 29 > ++ > 2 files changed, 34 insertions(+) > > diff --git a/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h > b/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h > index 9331e49..fc3ccda 100644 > --- a/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h > +++ b/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h > @@ -71,6 +71,11 @@ > #define CPU_FEATURE_APIC_TPR_UPDATE_MESSAGE (32+9) > #define CPU_FEATURE_ENERGY_PERFORMANCE_BIAS (32+10) > #define CPU_FEATURE_PPIN(32+11) > +// > +// Currently, CPU_FEATURE_PROC_TRACE is the MAX feature we support. > +// If you define a feature bigger than it, please also replace it > +// in RegisterCpuFeatureLibIsFeatureValid function. > +// > #define CPU_FEATURE_PROC_TRACE (32+12) > > #define CPU_FEATURE_BEFORE_ALL BIT27 > diff --git > a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c > b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c > index dd6a82b..6ec26e1 100644 > --- a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c > +++ b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c > @@ -81,6 +81,34 @@ DumpCpuFeature ( > } > > /** > + Determines if the CPU feature is valid. > + > + @param[in] FeaturePointer to CPU feature > + > + @retval TRUE The CPU feature is valid. > + @retval FALSE The CPU feature is invalid. > +**/ > +BOOLEAN > +RegisterCpuFeatureLibIsFeatureValid ( > + IN UINT32Feature > + ) > +{ > + UINT32 Data; > + > + Data = Feature; > + Data &= ~(CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER | CPU_FEATURE_BEFORE_ALL > | CPU_FEATURE_AFTER_ALL); > + // > + // Currently, CPU_FEATURE_PROC_TRACE is the MAX feature we support. > + // If you define a feature bigger than it, please replace it at below. > + // > + if (Data > CPU_FEATURE_PROC_TRACE) { > +DEBUG ((DEBUG_ERROR, "Invalid CPU feature: 0x%x ", Feature)); > +return FALSE; > + } > + return TRUE; > +} > + > +/** >Determines if the feature bit mask is in dependent CPU feature bit mask > buffer. > >@param[in] FeatureMaskPointer to CPU feature bit mask > @@ -444,6 +472,7 @@ RegisterCpuFeature ( > >VA_START (Marker, InitializeFunc); >Feature = VA_ARG (Marker, UINT32); > + ASSERT (RegisterCpuFeatureLibIsFeatureValid(Feature)); >while (Feature != CPU_FEATURE_END) { > ASSERT ((Feature & (CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER)) > != (CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER)); > The consensus thus far seems to be that we should not add a separate _MAX macro for this purpose. I don't understand why -- in my opinion it would be easier to update the macro in one place only. Now, I realize we have a library class header file here, and a library instance. Those things are separate; it is conceivable that another library instance is developed independently, and thus we should not tie the MAX feature of *all* library instances to the same central class header. However, this separation is already being violated in this patch: the RegisterCpuFeatureLibIsFeatureValid() function is an implementation detail of the (currently only one) library instance. Thus, the lib class header should not refer to it, even in a comment. So, I don't understand why we can't just add a _MAX macro. The central library instance could use _MAX; all other (out of tree) instances would not use _MAX. Anyway, this doesn't mean the patch is not correct. Acked-by: Laszlo Ersek Thanks Laszlo ___ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
Re: [edk2] [PATCH V2] UefiCpuPkg: Check invalid RegisterCpuFeature parameter
On 12/13/2017 10:35 AM, Song, BinX wrote: V2: Update function name, add more detail description. V1: Check and assert invalid RegisterCpuFeature function parameter Cc: Eric Dong Cc: Laszlo Ersek Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Bell Song --- .../Include/Library/RegisterCpuFeaturesLib.h | 5 .../RegisterCpuFeaturesLib.c | 29 ++ 2 files changed, 34 insertions(+) diff --git a/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h b/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h index 9331e49..fc3ccda 100644 --- a/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h +++ b/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h @@ -71,6 +71,11 @@ #define CPU_FEATURE_APIC_TPR_UPDATE_MESSAGE (32+9) #define CPU_FEATURE_ENERGY_PERFORMANCE_BIAS (32+10) #define CPU_FEATURE_PPIN(32+11) +// +// Currently, CPU_FEATURE_PROC_TRACE is the MAX feature we support. +// If you define a feature bigger than it, please also replace it +// in RegisterCpuFeatureLibIsFeatureValid function. +// #define CPU_FEATURE_PROC_TRACE (32+12) #define CPU_FEATURE_BEFORE_ALL BIT27 diff --git a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c index dd6a82b..6ec26e1 100644 --- a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c +++ b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c @@ -81,6 +81,34 @@ DumpCpuFeature ( } /** + Determines if the CPU feature is valid. + + @param[in] FeaturePointer to CPU feature + + @retval TRUE The CPU feature is valid. + @retval FALSE The CPU feature is invalid. +**/ +BOOLEAN +RegisterCpuFeatureLibIsFeatureValid ( + IN UINT32Feature + ) +{ + UINT32 Data; + + Data = Feature; + Data &= ~(CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER | CPU_FEATURE_BEFORE_ALL | CPU_FEATURE_AFTER_ALL); + // + // Currently, CPU_FEATURE_PROC_TRACE is the MAX feature we support. + // If you define a feature bigger than it, please replace it at below. + // + if (Data > CPU_FEATURE_PROC_TRACE) { +DEBUG ((DEBUG_ERROR, "Invalid CPU feature: 0x%x ", Feature)); +return FALSE; + } + return TRUE; +} + +/** Determines if the feature bit mask is in dependent CPU feature bit mask buffer. @param[in] FeatureMaskPointer to CPU feature bit mask @@ -444,6 +472,7 @@ RegisterCpuFeature ( VA_START (Marker, InitializeFunc); Feature = VA_ARG (Marker, UINT32); + ASSERT (RegisterCpuFeatureLibIsFeatureValid(Feature)); while (Feature != CPU_FEATURE_END) { ASSERT ((Feature & (CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER)) != (CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER)); Reviewed-by: Ruiyu Ni -- Thanks, Ray ___ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
[edk2] [PATCH V2] UefiCpuPkg: Check invalid RegisterCpuFeature parameter
V2: Update function name, add more detail description. V1: Check and assert invalid RegisterCpuFeature function parameter Cc: Eric Dong Cc: Laszlo Ersek Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Bell Song --- .../Include/Library/RegisterCpuFeaturesLib.h | 5 .../RegisterCpuFeaturesLib.c | 29 ++ 2 files changed, 34 insertions(+) diff --git a/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h b/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h index 9331e49..fc3ccda 100644 --- a/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h +++ b/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h @@ -71,6 +71,11 @@ #define CPU_FEATURE_APIC_TPR_UPDATE_MESSAGE (32+9) #define CPU_FEATURE_ENERGY_PERFORMANCE_BIAS (32+10) #define CPU_FEATURE_PPIN(32+11) +// +// Currently, CPU_FEATURE_PROC_TRACE is the MAX feature we support. +// If you define a feature bigger than it, please also replace it +// in RegisterCpuFeatureLibIsFeatureValid function. +// #define CPU_FEATURE_PROC_TRACE (32+12) #define CPU_FEATURE_BEFORE_ALL BIT27 diff --git a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c index dd6a82b..6ec26e1 100644 --- a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c +++ b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c @@ -81,6 +81,34 @@ DumpCpuFeature ( } /** + Determines if the CPU feature is valid. + + @param[in] FeaturePointer to CPU feature + + @retval TRUE The CPU feature is valid. + @retval FALSE The CPU feature is invalid. +**/ +BOOLEAN +RegisterCpuFeatureLibIsFeatureValid ( + IN UINT32Feature + ) +{ + UINT32 Data; + + Data = Feature; + Data &= ~(CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER | CPU_FEATURE_BEFORE_ALL | CPU_FEATURE_AFTER_ALL); + // + // Currently, CPU_FEATURE_PROC_TRACE is the MAX feature we support. + // If you define a feature bigger than it, please replace it at below. + // + if (Data > CPU_FEATURE_PROC_TRACE) { +DEBUG ((DEBUG_ERROR, "Invalid CPU feature: 0x%x ", Feature)); +return FALSE; + } + return TRUE; +} + +/** Determines if the feature bit mask is in dependent CPU feature bit mask buffer. @param[in] FeatureMaskPointer to CPU feature bit mask @@ -444,6 +472,7 @@ RegisterCpuFeature ( VA_START (Marker, InitializeFunc); Feature = VA_ARG (Marker, UINT32); + ASSERT (RegisterCpuFeatureLibIsFeatureValid(Feature)); while (Feature != CPU_FEATURE_END) { ASSERT ((Feature & (CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER)) != (CPU_FEATURE_BEFORE | CPU_FEATURE_AFTER)); -- 2.10.2.windows.1 ___ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel