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[0/4] misc warning cleanup in arch/risc-v

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Series misc warning cleanup in arch/risc-v | expand

Message

Conor Dooley Aug. 14, 2022, 2:12 p.m. UTC
From: Conor Dooley <conor.dooley@microchip.com>

Hey all,
Couple fixes here for most of what's left of the {sparse,} warnings in
arch/riscv that are still in need of patches. Ben has sent patches
for the VDSO issue already (although they seem to need rework).

VDSO aside, With this patchset applied, we are left with:
- cpuinfo_ops missing prototype: this likely needs to go into an
  asm-generic header & I'll send a separate patch for that.
- Complaints about an error in mm/init.c:
  "error inarch/riscv/mm/init.c:819:2: error: "setup_vm() is <trunc>
  I think this can be ignored.
- 600+ -Woverride-init warnings for syscall table setup where
  overriding seems to be the whole point of the macro.
- Warnings about imported kvm core code.
- Flexible array member warnings that look like common KVM code
  patterns
- An unexpected unlock in kvm_riscv_check_vcpu_requests that was added
  intentionally:
  https://lore.kernel.org/all/20220710151105.687193-1-apatel@ventanamicro.com/
  Is it worth looking into whether that's a false positive or not?

Thanks,
Conor.

Conor Dooley (4):
  riscv: kvm: vcpu_timer: fix unused variable warnings
  riscv: kvm: move extern sbi_ext declarations to a header
  riscv: signal: fix missing prototype warning
  riscv: traps: add missing prototype

 arch/riscv/include/asm/kvm_vcpu_sbi.h | 12 ++++++++++++
 arch/riscv/include/asm/signal.h       | 12 ++++++++++++
 arch/riscv/include/asm/thread_info.h  |  2 ++
 arch/riscv/kernel/signal.c            |  1 +
 arch/riscv/kernel/traps.c             |  3 ++-
 arch/riscv/kvm/vcpu_sbi.c             | 12 +-----------
 arch/riscv/kvm/vcpu_timer.c           |  4 ----
 7 files changed, 30 insertions(+), 16 deletions(-)
 create mode 100644 arch/riscv/include/asm/signal.h

Comments

Palmer Dabbelt Aug. 18, 2022, 11:01 p.m. UTC | #1
On Sun, 14 Aug 2022 07:12:34 PDT (-0700), mail@conchuod.ie wrote:
> From: Conor Dooley <conor.dooley@microchip.com>
>
> Hey all,
> Couple fixes here for most of what's left of the {sparse,} warnings in
> arch/riscv that are still in need of patches. Ben has sent patches
> for the VDSO issue already (although they seem to need rework).
>
> VDSO aside, With this patchset applied, we are left with:
> - cpuinfo_ops missing prototype: this likely needs to go into an
>   asm-generic header & I'll send a separate patch for that.
> - Complaints about an error in mm/init.c:
>   "error inarch/riscv/mm/init.c:819:2: error: "setup_vm() is <trunc>
>   I think this can be ignored.
> - 600+ -Woverride-init warnings for syscall table setup where
>   overriding seems to be the whole point of the macro.
> - Warnings about imported kvm core code.
> - Flexible array member warnings that look like common KVM code
>   patterns
> - An unexpected unlock in kvm_riscv_check_vcpu_requests that was added
>   intentionally:
>   https://lore.kernel.org/all/20220710151105.687193-1-apatel@ventanamicro.com/
>   Is it worth looking into whether that's a false positive or not?
>
> Thanks,
> Conor.
>
> Conor Dooley (4):
>   riscv: kvm: vcpu_timer: fix unused variable warnings
>   riscv: kvm: move extern sbi_ext declarations to a header
>   riscv: signal: fix missing prototype warning
>   riscv: traps: add missing prototype
>
>  arch/riscv/include/asm/kvm_vcpu_sbi.h | 12 ++++++++++++
>  arch/riscv/include/asm/signal.h       | 12 ++++++++++++
>  arch/riscv/include/asm/thread_info.h  |  2 ++
>  arch/riscv/kernel/signal.c            |  1 +
>  arch/riscv/kernel/traps.c             |  3 ++-
>  arch/riscv/kvm/vcpu_sbi.c             | 12 +-----------
>  arch/riscv/kvm/vcpu_timer.c           |  4 ----
>  7 files changed, 30 insertions(+), 16 deletions(-)
>  create mode 100644 arch/riscv/include/asm/signal.h

These generally look good to me.  Anup handles the KVM bits so I'll let 
him chime in there, but

Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>

on all of them.

Happy to do some sort of shared tag thing, but it looks like these are 
all independent enough that it'd be easier to just split them up.  I've 
put the non-KVM bits over at palmer/riscv-variable_fixes_without_kvm, if 
you guys are all OK splitting this up then I'll go take those onto 
riscv/fixes.  I'll wait a bit for folks to get a chance to look, so it 
won't be for tomorrow morning.

Thanks!
Conor Dooley Aug. 19, 2022, 11:34 a.m. UTC | #2
On 19/08/2022 00:01, Palmer Dabbelt wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> On Sun, 14 Aug 2022 07:12:34 PDT (-0700), mail@conchuod.ie wrote:
>> From: Conor Dooley <conor.dooley@microchip.com>
>>
>> Hey all,
>> Couple fixes here for most of what's left of the {sparse,} warnings in
>> arch/riscv that are still in need of patches. Ben has sent patches
>> for the VDSO issue already (although they seem to need rework).
>>
>> VDSO aside, With this patchset applied, we are left with:
>> - cpuinfo_ops missing prototype: this likely needs to go into an
>>   asm-generic header & I'll send a separate patch for that.
>> - Complaints about an error in mm/init.c:
>>   "error inarch/riscv/mm/init.c:819:2: error: "setup_vm() is <trunc>
>>   I think this can be ignored.
>> - 600+ -Woverride-init warnings for syscall table setup where
>>   overriding seems to be the whole point of the macro.
>> - Warnings about imported kvm core code.
>> - Flexible array member warnings that look like common KVM code
>>   patterns
>> - An unexpected unlock in kvm_riscv_check_vcpu_requests that was added
>>   intentionally:
>>   https://lore.kernel.org/all/20220710151105.687193-1-apatel@ventanamicro.com/
>>   Is it worth looking into whether that's a false positive or not?
>>
>> Thanks,
>> Conor.
>>
>> Conor Dooley (4):
>>   riscv: kvm: vcpu_timer: fix unused variable warnings
>>   riscv: kvm: move extern sbi_ext declarations to a header
>>   riscv: signal: fix missing prototype warning
>>   riscv: traps: add missing prototype
>>
>>  arch/riscv/include/asm/kvm_vcpu_sbi.h | 12 ++++++++++++
>>  arch/riscv/include/asm/signal.h       | 12 ++++++++++++
>>  arch/riscv/include/asm/thread_info.h  |  2 ++
>>  arch/riscv/kernel/signal.c            |  1 +
>>  arch/riscv/kernel/traps.c             |  3 ++-
>>  arch/riscv/kvm/vcpu_sbi.c             | 12 +-----------
>>  arch/riscv/kvm/vcpu_timer.c           |  4 ----
>>  7 files changed, 30 insertions(+), 16 deletions(-)
>>  create mode 100644 arch/riscv/include/asm/signal.h
> 
> These generally look good to me.  Anup handles the KVM bits so I'll let
> him chime in there, but
> 
> Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com>
> Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
> 
> on all of them.
> 
> Happy to do some sort of shared tag thing, but it looks like these are
> all independent enough that it'd be easier to just split them up.  I've
> put the non-KVM bits over at palmer/riscv-variable_fixes_without_kvm, if
> you guys are all OK splitting this up then I'll go take those onto
> riscv/fixes.

Yeah, I see no reason that the kvm patches can't just go via the riscv
kvm tree. I sent the patches as a single series mostly because I wanted
to mention what was left warning wise in the cover.

> I'll wait a bit for folks to get a chance to look, so it
> won't be for tomorrow morning.

They've been there a while and nothing has gone up in flames, I am sure
we will survive a few weeks more :)

Thanks,
Conor.
Anup Patel Aug. 19, 2022, 4:14 p.m. UTC | #3
On Fri, Aug 19, 2022 at 4:32 AM Palmer Dabbelt <palmer@dabbelt.com> wrote:
>
> On Sun, 14 Aug 2022 07:12:34 PDT (-0700), mail@conchuod.ie wrote:
> > From: Conor Dooley <conor.dooley@microchip.com>
> >
> > Hey all,
> > Couple fixes here for most of what's left of the {sparse,} warnings in
> > arch/riscv that are still in need of patches. Ben has sent patches
> > for the VDSO issue already (although they seem to need rework).
> >
> > VDSO aside, With this patchset applied, we are left with:
> > - cpuinfo_ops missing prototype: this likely needs to go into an
> >   asm-generic header & I'll send a separate patch for that.
> > - Complaints about an error in mm/init.c:
> >   "error inarch/riscv/mm/init.c:819:2: error: "setup_vm() is <trunc>
> >   I think this can be ignored.
> > - 600+ -Woverride-init warnings for syscall table setup where
> >   overriding seems to be the whole point of the macro.
> > - Warnings about imported kvm core code.
> > - Flexible array member warnings that look like common KVM code
> >   patterns
> > - An unexpected unlock in kvm_riscv_check_vcpu_requests that was added
> >   intentionally:
> >   https://lore.kernel.org/all/20220710151105.687193-1-apatel@ventanamicro.com/
> >   Is it worth looking into whether that's a false positive or not?
> >
> > Thanks,
> > Conor.
> >
> > Conor Dooley (4):
> >   riscv: kvm: vcpu_timer: fix unused variable warnings
> >   riscv: kvm: move extern sbi_ext declarations to a header
> >   riscv: signal: fix missing prototype warning
> >   riscv: traps: add missing prototype
> >
> >  arch/riscv/include/asm/kvm_vcpu_sbi.h | 12 ++++++++++++
> >  arch/riscv/include/asm/signal.h       | 12 ++++++++++++
> >  arch/riscv/include/asm/thread_info.h  |  2 ++
> >  arch/riscv/kernel/signal.c            |  1 +
> >  arch/riscv/kernel/traps.c             |  3 ++-
> >  arch/riscv/kvm/vcpu_sbi.c             | 12 +-----------
> >  arch/riscv/kvm/vcpu_timer.c           |  4 ----
> >  7 files changed, 30 insertions(+), 16 deletions(-)
> >  create mode 100644 arch/riscv/include/asm/signal.h
>
> These generally look good to me.  Anup handles the KVM bits so I'll let
> him chime in there, but
>
> Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com>
> Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
>
> on all of them.
>
> Happy to do some sort of shared tag thing, but it looks like these are
> all independent enough that it'd be easier to just split them up.  I've
> put the non-KVM bits over at palmer/riscv-variable_fixes_without_kvm, if
> you guys are all OK splitting this up then I'll go take those onto
> riscv/fixes.  I'll wait a bit for folks to get a chance to look, so it
> won't be for tomorrow morning.

Thanks Palmer. I have queued the KVM fixes (first two patches).

Regards,
Anup

>
> Thanks!
>
> --
> kvm-riscv mailing list
> kvm-riscv@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/kvm-riscv
Palmer Dabbelt Aug. 25, 2022, 11:42 p.m. UTC | #4
On Fri, 19 Aug 2022 09:14:32 PDT (-0700), apatel@ventanamicro.com wrote:
> On Fri, Aug 19, 2022 at 4:32 AM Palmer Dabbelt <palmer@dabbelt.com> wrote:
>>
>> On Sun, 14 Aug 2022 07:12:34 PDT (-0700), mail@conchuod.ie wrote:
>> > From: Conor Dooley <conor.dooley@microchip.com>
>> >
>> > Hey all,
>> > Couple fixes here for most of what's left of the {sparse,} warnings in
>> > arch/riscv that are still in need of patches. Ben has sent patches
>> > for the VDSO issue already (although they seem to need rework).
>> >
>> > VDSO aside, With this patchset applied, we are left with:
>> > - cpuinfo_ops missing prototype: this likely needs to go into an
>> >   asm-generic header & I'll send a separate patch for that.
>> > - Complaints about an error in mm/init.c:
>> >   "error inarch/riscv/mm/init.c:819:2: error: "setup_vm() is <trunc>
>> >   I think this can be ignored.
>> > - 600+ -Woverride-init warnings for syscall table setup where
>> >   overriding seems to be the whole point of the macro.
>> > - Warnings about imported kvm core code.
>> > - Flexible array member warnings that look like common KVM code
>> >   patterns
>> > - An unexpected unlock in kvm_riscv_check_vcpu_requests that was added
>> >   intentionally:
>> >   https://lore.kernel.org/all/20220710151105.687193-1-apatel@ventanamicro.com/
>> >   Is it worth looking into whether that's a false positive or not?
>> >
>> > Thanks,
>> > Conor.
>> >
>> > Conor Dooley (4):
>> >   riscv: kvm: vcpu_timer: fix unused variable warnings
>> >   riscv: kvm: move extern sbi_ext declarations to a header
>> >   riscv: signal: fix missing prototype warning
>> >   riscv: traps: add missing prototype
>> >
>> >  arch/riscv/include/asm/kvm_vcpu_sbi.h | 12 ++++++++++++
>> >  arch/riscv/include/asm/signal.h       | 12 ++++++++++++
>> >  arch/riscv/include/asm/thread_info.h  |  2 ++
>> >  arch/riscv/kernel/signal.c            |  1 +
>> >  arch/riscv/kernel/traps.c             |  3 ++-
>> >  arch/riscv/kvm/vcpu_sbi.c             | 12 +-----------
>> >  arch/riscv/kvm/vcpu_timer.c           |  4 ----
>> >  7 files changed, 30 insertions(+), 16 deletions(-)
>> >  create mode 100644 arch/riscv/include/asm/signal.h
>>
>> These generally look good to me.  Anup handles the KVM bits so I'll let
>> him chime in there, but
>>
>> Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com>
>> Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
>>
>> on all of them.
>>
>> Happy to do some sort of shared tag thing, but it looks like these are
>> all independent enough that it'd be easier to just split them up.  I've
>> put the non-KVM bits over at palmer/riscv-variable_fixes_without_kvm, if
>> you guys are all OK splitting this up then I'll go take those onto
>> riscv/fixes.  I'll wait a bit for folks to get a chance to look, so it
>> won't be for tomorrow morning.
>
> Thanks Palmer. I have queued the KVM fixes (first two patches).

Sounds good.  The others are in riscv/fixes.

>
> Regards,
> Anup
>
>>
>> Thanks!
>>
>> --
>> kvm-riscv mailing list
>> kvm-riscv@lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/kvm-riscv