Re: [PATCH v6 06/17] riscv: Add vendor extensions to /proc/cpuinfo

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On Fri, May 10, 2024 at 10:32:19PM +0100, Conor Dooley wrote:
> On Fri, May 10, 2024 at 02:25:26PM -0700, Charlie Jenkins wrote:
> > On Fri, May 10, 2024 at 09:50:32PM +0100, Conor Dooley wrote:
> > > On Tue, May 07, 2024 at 06:03:19PM +0100, Conor Dooley wrote:
> > > > On Fri, May 03, 2024 at 11:18:21AM -0700, Charlie Jenkins wrote:
> > > > > All of the supported vendor extensions that have been listed in
> > > > > riscv_isa_vendor_ext_list can be exported through /proc/cpuinfo.
> > > > > 
> > > > > Signed-off-by: Charlie Jenkins <charlie@xxxxxxxxxxxx>
> > > > 
> > > > This seems fine, thanks for updating this interface :)
> > > > 
> > > > Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
> > > 
> > > Hmm, actually the automation on patchwork is complaining a bunch about
> > > the series, but I think that's mostly false positives except for this
> > > patch. The nommu defconfigs are prob the easiest way to reproduce this:
> > >   /build/tmp.QPMRM3oUNu/arch/riscv/kernel/vendor_extensions.c:41:55: error: 'struct riscv_isa_vendor_ext_data_list' has no member named 'vendor_bitmap'
> > >   /build/tmp.QPMRM3oUNu/arch/riscv/kernel/vendor_extensions.c:42:60: error: 'struct riscv_isa_vendor_ext_data_list' has no member named 'per_hart_vendor_bitmap'; did you mean 'per_hart_isa_bitmap'?
> > >   /build/tmp.QPMRM3oUNu/arch/riscv/kernel/vendor_extensions.c:43:60: error: 'struct riscv_isa_vendor_ext_data_list' has no member named 'bitmap_size'
> > > 
> > > Cheers,
> > > Conor.
> > 
> > The false negatives always throw me off.
> 
> Aye, it's pretty frustrating for me trying to report anything. Any time
> a bunch of headers change produces a bunch of file rebuilds and
> therefore warnings. That should in theory be caught by the fact that we
> apply the patch & build, jump back to HEAD~1, build that & grab the
> "before" warning state and then jump forward, rebuild the patch and
> gather the "after" state. The idea is that that is an apples:apples
> comparison as the same files will need to be rebuilt for both but it is
> falling over somewhere. Maybe I'll have time to look into that soonTM.
> 
> > The errors are also offset by
> > one patch.
> 
> Ye, that's my bad I think. In a rush off to another patch before the
> thought I had on it left my brain and just pressed reply on the wrong
> email. Sorry bout that :)
> 

The error message in full is:

Patch 7/17: Test 2/12: .github/scripts/patches/tests/build_rv64_clang_allmodconfig.sh
  Redirect to /build/tmp.OCcmyhkGEw and /build/tmp.TsjyVLqMfy
  Tree base:
  fefb1e9ecc34 ("riscv: Add vendor extensions to /proc/cpuinfo")
  Building the whole tree with the patch
  ../arch/riscv/kernel/vendor_extensions.c:41:42: error: no member named 'vendor_bitmap' in 'struct riscv_isa_vendor_ext_data_list'
  ../arch/riscv/kernel/vendor_extensions.c:42:46: error: no member named 'per_hart_vendor_bitmap' in 'struct riscv_isa_vendor_ext_data_list'; did you mean 'per_hart_isa_bitmap'?
  ../arch/riscv/kernel/vendor_extensions.c:43:47: error: no member named 'bitmap_size' in 'struct riscv_isa_vendor_ext_data_list'


It knows it's on patch 7 but then it prints the title of patch 6.

- Charlie

> > This was actually introduced in the following patch "riscv:
> > Introduce vendor variants of extension helpers" because I accidentally
> > fixed this issue in the patch "riscv: cpufeature: Extract common
> > elements from extension checking" instead of the one it was introduced
> > in.
> 






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