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Message-ID: <CA+icZUUk8jhGqsu65A8oHFcqzrqNRon+riPff9aJu2UFLXL7wQ@mail.gmail.com>
Date:   Mon, 8 Apr 2019 16:44:47 +0200
From:   Sedat Dilek <sedat.dilek@...il.com>
To:     Denys Vlasenko <dvlasenk@...hat.com>
Cc:     linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: CBL issue #431: lld: x86_64: sysfs: cannot create duplicate
 filename $module/.rodata.cst{16,32}

On Mon, Apr 8, 2019 at 4:42 PM Denys Vlasenko <dvlasenk@...hat.com> wrote:
>
> On 4/8/19 4:34 PM, Sedat Dilek wrote:
> > v2:
> >
> > sdi@...za:~/src/linux-kernel/linux$ git --no-pager diff
> > diff --git a/arch/x86/crypto/camellia-aesni-avx-asm_64.S
> > b/arch/x86/crypto/camellia-aesni-avx-asm_64.S
> > index a14af6eb09cb..712d6a7e8b8f 100644
> > --- a/arch/x86/crypto/camellia-aesni-avx-asm_64.S
> > +++ b/arch/x86/crypto/camellia-aesni-avx-asm_64.S
> > @@ -573,8 +573,12 @@
> > ENDPROC(roundsm16_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab)
> >          vmovdqu y7, 15 * 16(rio);
> >
> >
> > -/* NB: section is mergeable, all elements must be aligned 16-byte blocks */
> > -.section       .rodata.cst16, "aM", @progbits, 16
> > +/*
> > + * NB: section is mergeable, all elements must be aligned 16-byte blocks
> > + * There is more than one object in this section, let's use module name
> > + * instead of object name as unique suffix
> > + */
> > +.section        .rodata.cst16.camellia_aesni_avx_asm_64, "aM", @progbits, 16
> >   .align 16
> >
> >   #define SHUFB_BYTES(idx) \
> > diff --git a/arch/x86/crypto/camellia-aesni-avx2-asm_64.S
> > b/arch/x86/crypto/camellia-aesni-avx2-asm_64.S
> > index b66bbfa62f50..34f6b0c4196d 100644
> > --- a/arch/x86/crypto/camellia-aesni-avx2-asm_64.S
> > +++ b/arch/x86/crypto/camellia-aesni-avx2-asm_64.S
> > @@ -626,8 +626,12 @@
> > ENDPROC(roundsm32_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab)
> >          .long 0x00010203, 0x04050607, 0x80808080, 0x80808080
> >          .long 0x00010203, 0x04050607, 0x80808080, 0x80808080
> >
> > -/* NB: section is mergeable, all elements must be aligned 16-byte blocks */
> > -.section       .rodata.cst16, "aM", @progbits, 16
> > +/*
> > + * NB: section is mergeable, all elements must be aligned 16-byte blocks
> > + * There is more than one object in this section, let's use module name
> > + * instead of object name as unique suffix
> > +*/
> > +.section        .rodata.cst16.ccamellia_aesni_avx2_asm_64, "aM", @progbits, 16
>
> why "ccamellia", not "camellia"?
>

Grrr.

> > I tried to check for the .rodata.cst32 case, how do I identify the *.S files?
>
> ?
>
> Looks like all .rodata.cst32 sections have suffixes, nothing to fix.

$ for i in .rodata.cst32.pack_bswap .rodata.cst32.shufb_16x16b
.rodata.cst32.CTR2BL .rodata.cst32.CTR4BL .rodata.cst32.CTRINC
.rodata.cst32.ROT16 .rodata.cst32.ROT8 .rodata.cst32.CTR2BL
.rodata.cst32.CTR4BL .rodata.cst32.CTR8BL
.rodata.cst32.pshufb_shf_table .rodata.cst32.morus1280_const
.rodata.cst32.morus1280_counter .rodata.cst32.ANMASK
.rodata.cst32.ORMASK .rodata.cst32.PSHUFFLE_BYTE_FLIP_MASK
.rodata.cst32._SHUF_00BA .rodata.cst32._SHUF_DC00
.rodata.cst32.MASK_YMM_LO .rodata.cst32.PSHUFFLE_BYTE_FLIP_MASK ; do
echo [ "$i" ] ; git grep $i arch/x86 ; echo [ "/$i" ] ; echo "" ; done
[ .rodata.cst32.pack_bswap ]
arch/x86/crypto/camellia-aesni-avx2-asm_64.S:.section
.rodata.cst32.pack_bswap, "aM", @progbits, 32
[ /.rodata.cst32.pack_bswap ]

[ .rodata.cst32.shufb_16x16b ]
arch/x86/crypto/camellia-aesni-avx2-asm_64.S:.section
.rodata.cst32.shufb_16x16b, "aM", @progbits, 32
[ /.rodata.cst32.shufb_16x16b ]

[ .rodata.cst32.CTR2BL ]
arch/x86/crypto/chacha-avx2-x86_64.S:.section   .rodata.cst32.CTR2BL,
"aM", @progbits, 32
arch/x86/crypto/chacha-avx512vl-x86_64.S:.section
.rodata.cst32.CTR2BL, "aM", @progbits, 32
[ /.rodata.cst32.CTR2BL ]

[ .rodata.cst32.CTR4BL ]
arch/x86/crypto/chacha-avx2-x86_64.S:.section   .rodata.cst32.CTR4BL,
"aM", @progbits, 32
arch/x86/crypto/chacha-avx512vl-x86_64.S:.section
.rodata.cst32.CTR4BL, "aM", @progbits, 32
[ /.rodata.cst32.CTR4BL ]

[ .rodata.cst32.CTRINC ]
arch/x86/crypto/chacha-avx2-x86_64.S:.section   .rodata.cst32.CTRINC,
"aM", @progbits, 32
[ /.rodata.cst32.CTRINC ]

[ .rodata.cst32.ROT16 ]
arch/x86/crypto/chacha-avx2-x86_64.S:.section   .rodata.cst32.ROT16,
"aM", @progbits, 32
[ /.rodata.cst32.ROT16 ]

[ .rodata.cst32.ROT8 ]
arch/x86/crypto/chacha-avx2-x86_64.S:.section   .rodata.cst32.ROT8,
"aM", @progbits, 32
[ /.rodata.cst32.ROT8 ]

[ .rodata.cst32.CTR2BL ]
arch/x86/crypto/chacha-avx2-x86_64.S:.section   .rodata.cst32.CTR2BL,
"aM", @progbits, 32
arch/x86/crypto/chacha-avx512vl-x86_64.S:.section
.rodata.cst32.CTR2BL, "aM", @progbits, 32
[ /.rodata.cst32.CTR2BL ]

[ .rodata.cst32.CTR4BL ]
arch/x86/crypto/chacha-avx2-x86_64.S:.section   .rodata.cst32.CTR4BL,
"aM", @progbits, 32
arch/x86/crypto/chacha-avx512vl-x86_64.S:.section
.rodata.cst32.CTR4BL, "aM", @progbits, 32
[ /.rodata.cst32.CTR4BL ]

[ .rodata.cst32.CTR8BL ]
arch/x86/crypto/chacha-avx512vl-x86_64.S:.section
.rodata.cst32.CTR8BL, "aM", @progbits, 32
[ /.rodata.cst32.CTR8BL ]

[ .rodata.cst32.pshufb_shf_table ]
arch/x86/crypto/crct10dif-pcl-asm_64.S:.section
.rodata.cst32.pshufb_shf_table, "aM", @progbits, 32
[ /.rodata.cst32.pshufb_shf_table ]

[ .rodata.cst32.morus1280_const ]
arch/x86/crypto/morus1280-avx2-asm.S:.section
.rodata.cst32.morus1280_const, "aM", @progbits, 32
[ /.rodata.cst32.morus1280_const ]

[ .rodata.cst32.morus1280_counter ]
arch/x86/crypto/morus1280-avx2-asm.S:.section
.rodata.cst32.morus1280_counter, "aM", @progbits, 32
[ /.rodata.cst32.morus1280_counter ]

[ .rodata.cst32.ANMASK ]
arch/x86/crypto/poly1305-avx2-x86_64.S:.section .rodata.cst32.ANMASK,
"aM", @progbits, 32
[ /.rodata.cst32.ANMASK ]

[ .rodata.cst32.ORMASK ]
arch/x86/crypto/poly1305-avx2-x86_64.S:.section .rodata.cst32.ORMASK,
"aM", @progbits, 32
[ /.rodata.cst32.ORMASK ]

[ .rodata.cst32.PSHUFFLE_BYTE_FLIP_MASK ]
arch/x86/crypto/sha256-avx2-asm.S:.section
.rodata.cst32.PSHUFFLE_BYTE_FLIP_MASK, "aM", @progbits, 32
arch/x86/crypto/sha512-avx2-asm.S:.section
.rodata.cst32.PSHUFFLE_BYTE_FLIP_MASK, "aM", @progbits, 32
[ /.rodata.cst32.PSHUFFLE_BYTE_FLIP_MASK ]

[ .rodata.cst32._SHUF_00BA ]
arch/x86/crypto/sha256-avx2-asm.S:.section
.rodata.cst32._SHUF_00BA, "aM", @progbits, 32
[ /.rodata.cst32._SHUF_00BA ]

[ .rodata.cst32._SHUF_DC00 ]
arch/x86/crypto/sha256-avx2-asm.S:.section
.rodata.cst32._SHUF_DC00, "aM", @progbits, 32
[ /.rodata.cst32._SHUF_DC00 ]

[ .rodata.cst32.MASK_YMM_LO ]
arch/x86/crypto/sha512-avx2-asm.S:.section
.rodata.cst32.MASK_YMM_LO, "aM", @progbits, 32
[ /.rodata.cst32.MASK_YMM_LO ]

[ .rodata.cst32.PSHUFFLE_BYTE_FLIP_MASK ]
arch/x86/crypto/sha256-avx2-asm.S:.section
.rodata.cst32.PSHUFFLE_BYTE_FLIP_MASK, "aM", @progbits, 32
arch/x86/crypto/sha512-avx2-asm.S:.section
.rodata.cst32.PSHUFFLE_BYTE_FLIP_MASK, "aM", @progbits, 32
[ /.rodata.cst32.PSHUFFLE_BYTE_FLIP_MASK ]

- Sedat -

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