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  1. 15 Jan, 2021 3 commits
    • Alexander Lobakin's avatar
      MIPS: vmlinux.lds.S: add ".gnu.attributes" to DISCARDS · 5629d418
      Alexander Lobakin authored 
      Discard GNU attributes (MIPS FP type, GNU Hash etc.) at link time
as kernel doesn't use it at all.
Solves a dozen of the following ld warnings (one per every file):

mips-alpine-linux-musl-ld: warning: orphan section `.gnu.attributes'
from `arch/mips/kernel/head.o' being placed in section
`.gnu.attributes'
mips-alpine-linux-musl-ld: warning: orphan section `.gnu.attributes'
from `init/main.o' being placed in section `.gnu.attributes'
Signed-off-by: default avatarAlexander Lobakin <alobakin@pm.me>
Reviewed-by: default avatarNathan Chancellor <natechancellor@gmail.com>
Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
      5629d418
    • Alexander Lobakin's avatar
      MIPS: CPS: don't create redundant .text.cps-vec section · ee90fef1
      Alexander Lobakin authored 
      A number of symbols from arch/mips/kernel/cps-vec.S is explicitly
placed into '.text.cps-vec' section.
There are no direct references to this section, so there's no need
to form it. '.balign 0x1000' directive will work anyway.

Moreover, this section was being placed in vmlinux differently
depending on CONFIG_LD_DEAD_CODE_DATA_ELIMINATION:
 - with this option enabled, '.text.cps-vec' was being caught
   by '.text.[0-9a-zA-Z_]*' from include/asm-generic/vmlinux.lds.h;
 - without this option, '.text.cps-vec' was being caught
   by discouraging '.text.*' from arch/mips/kernel/vmlinux.lds.S.

'.text.*' should not be used in vmlinux linker scripts at all as it
silently catches any orphan text sections.
So, remove both '.section .text.cps-vec' and '.text.*' from cps-vec.S
and vmlinux.lds.S respectively. As said, this does not affect related
functions alignment:

80116000 T mips_cps_core_entry
80116028 t not_nmi
80116200 T excep_tlbfill
80116280 T excep_xtlbfill
80116300 T excep_cache
80116380 T excep_genex
80116400 T excep_intex
80116480 T excep_ejtag
80116490 T mips_cps_core_init
Signed-off-by: default avatarAlexander Lobakin <alobakin@pm.me>
Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
      ee90fef1
    • Alexander Lobakin's avatar
      MIPS: vmlinux.lds.S: add missing PAGE_ALIGNED_DATA() section · 8ac7c87a
      Alexander Lobakin authored 
      MIPS uses its own declaration of rwdata, and thus it should be kept
in sync with the asm-generic one. Currently PAGE_ALIGNED_DATA() is
missing from the linker script, which emits the following ld
warnings:

mips-alpine-linux-musl-ld: warning: orphan section
`.data..page_aligned' from `arch/mips/kernel/vdso.o' being placed
in section `.data..page_aligned'
mips-alpine-linux-musl-ld: warning: orphan section
`.data..page_aligned' from `arch/mips/vdso/vdso-image.o' being placed
in section `.data..page_aligned'

Add the necessary declaration, so the mentioned structures will be
placed in vmlinux as intended:

ffffffff80630580 D __end_once
ffffffff80630580 D __start___dyndbg
ffffffff80630580 D __start_once
ffffffff80630580 D __stop___dyndbg
ffffffff80634000 d mips_vdso_data
ffffffff80638000 d vdso_data
ffffffff80638580 D _gp
ffffffff8063c000 T __init_begin
ffffffff8063c000 D _edata
ffffffff8063c000 T _sinittext

->

ffffffff805a4000 D __end_init_task
ffffffff805a4000 D __nosave_begin
ffffffff805a4000 D __nosave_end
ffffffff805a4000 d mips_vdso_data
ffffffff805a8000 d vdso_data
ffffffff805ac000 D mmlist_lock
ffffffff805ac080 D tasklist_lock

Fixes: ebb5e78c ("MIPS: Initial implementation of a VDSO")
Signed-off-by: default avatarAlexander Lobakin <alobakin@pm.me>
Reviewed-by: default avatarKees Cook <keescook@chromium.org>
Reviewed-by: default avatarNathan Chancellor <natechancellor@gmail.com>
Cc: stable@vger.kernel.org # 4.4+
Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
      8ac7c87a
  3. 13 Jan, 2021 5 commits
  5. 09 Jan, 2021 1 commit
  7. 07 Jan, 2021 7 commits
  9. 04 Jan, 2021 7 commits
  11. 28 Dec, 2020 3 commits
  13. 27 Dec, 2020 8 commits
  15. 26 Dec, 2020 5 commits
  17. 25 Dec, 2020 1 commit
    • Linus Torvalds's avatar
      drm/amd/display: avoid uninitialized variable warning · 61d79136
      Linus Torvalds authored 
      clang (quite rightly) complains fairly loudly about the newly added
mpc1_get_mpc_out_mux() function returning an uninitialized value if the
'opp_id' checks don't pass.

This may not happen in practice, but the code really shouldn't return
garbage if the sanity checks don't pass.

So just initialize 'val' to zero to avoid the issue.

Fixes: 110b055b ("drm/amd/display: add getter routine to retrieve mpcc mux")
Cc: Josip Pavic <Josip.Pavic@amd.com>
Cc: Bindu Ramamurthy <bindu.r@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      61d79136
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