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4c5a116ada
linux/arch/mips
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Thomas Gleixner 4c5a116ada vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter() 
MIPS already uses and S390 will need the vdso data pointer in
__arch_get_hw_counter().

This works nicely as long as the architecture does not support time
namespaces in the VDSO. With time namespaces enabled the regular
accessor to the vdso data pointer __arch_get_vdso_data() will return the
namespace specific VDSO data page for tasks which are part of a
non-root time namespace. This would cause the architectures which need
the vdso data pointer in __arch_get_hw_counter() to access the wrong
vdso data page.

Add a vdso_data pointer argument to __arch_get_hw_counter() and hand it in
from the call sites in the core code. For architectures which do not need
the data pointer in their counter accessor function the compiler will just
optimize it out.

Fix up all existing architecture implementations and make MIPS utilize the
pointer instead of invoking the accessor function.

No functional change and no change in the resulting object code (except
MIPS).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/draft-87wo2ekuzn.fsf@nanos.tec.linutronix.de
2020-08-06 10:57:30 +02:00
..
alchemy MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
ar7 MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
ath25 MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
ath79 MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
bcm47xx MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
bcm63xx MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
bmips MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
boot MIPS: ingenic: gcw0: Fix HP detection GPIO. 2020-06-25 10:18:22 +02:00
cavium-octeon MIPS updates for v5.8: 2020-06-03 13:32:21 -07:00
cobalt MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
configs MIPS: Loongson: Enable devicetree based probing for 8250 ports in defconfig 2020-05-18 09:34:41 +02:00
crypto crypto: {arm,arm64,mips}/poly1305 - remove redundant non-reduction from emit 2020-01-16 15:18:12 +08:00
dec MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
fw mips: Return proper error code from console ->setup() hook 2020-06-25 14:20:13 +02:00
generic MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
include vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter() 2020-08-06 10:57:30 +02:00
jazz mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
jz4740 MIPS: ingenic: Default to a generic board 2020-05-27 13:04:22 +02:00
kernel close-range-v5.9 2020-08-04 15:12:02 -07:00
kvm KVM: MIPS: Fix build errors for 32bit kernel 2020-07-10 06:15:38 -04:00
lantiq MIPS: lantiq: xway: sysctrl: fix the GPHY clock alias names 2020-06-15 13:14:51 +02:00
lib treewide: Remove uninitialized_var() usage 2020-07-16 12:35:15 -07:00
loongson2ef MIPS: Fix exception handler memcpy() 2020-05-24 09:15:54 +02:00
loongson32 MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
loongson64 Merge branch 'akpm' (patches from Andrew) 2020-06-03 20:24:15 -07:00
math-emu MIPS: Use fallthrough for arch/mips 2020-05-07 11:55:47 +02:00
mm treewide: Remove uninitialized_var() usage 2020-07-16 12:35:15 -07:00
mti-malta MIPS: Fix exception handler memcpy() 2020-05-24 09:15:54 +02:00
net MIPS: BPF: Use sizeof_field() instead of FIELD_SIZEOF() 2020-01-10 11:33:35 -08:00
netlogic MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
oprofile MIPS: Use fallthrough for arch/mips 2020-05-07 11:55:47 +02:00
paravirt MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
pci irqdomain/treewide: Free firmware node after domain removal 2020-07-23 00:08:52 +02:00
pic32 MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
pistachio MIPS: Fix exception handler memcpy() 2020-05-24 09:15:54 +02:00
pnx833x MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
power
ralink This time around we have 4 lines of diff in the core framework, removing a 2020-06-10 11:42:19 -07:00
rb532 MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
sgi-ip22 MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
sgi-ip27 mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sgi-ip30 MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
sgi-ip32 mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sibyte MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
sni MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
tools MIPS: tools: Fix resource leak in elf-entry.c 2020-05-24 09:29:48 +02:00
txx9 MIPS: Only include the platform file needed 2020-05-13 00:17:18 +02:00
vdso MIPS: VDSO: Allow ld.lld to link the VDSO 2020-05-12 10:02:11 +02:00
vr41xx MIPS: Fix builds for VR41xx platforms 2020-05-15 09:09:58 +02:00
Kbuild MIPS: Fix "make clean" error due to recent changes 2020-05-13 13:20:22 +02:00
Kbuild.platforms MIPS: Fix typos in arch/mips/Kbuild.platforms 2020-05-13 13:19:52 +02:00
Kconfig dma-mapping updates for 5.9 2020-08-04 17:29:57 -07:00
Kconfig.debug mips: Add CPS_NS16550_WIDTH config 2020-05-22 09:12:52 +02:00
Makefile mips: Add MIPS Warrior P5600 support 2020-05-22 09:10:53 +02:00
Makefile.postlink MIPS: fix indentation of the 'RELOCS' message 2020-01-20 15:37:30 -08:00