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4c5a116ada
linux/arch/arm
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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
..
boot Time, timers and related driver updates: 2020-08-04 18:17:37 -07:00
common
configs AT91 defconfig for 5.9 2020-07-27 14:35:28 +02:00
crypto crypto: Replace HTTP links with HTTPS ones 2020-07-23 17:34:20 +10:00
include vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter() 2020-08-06 10:57:30 +02:00
kernel fork-v5.9 2020-08-04 14:47:45 -07:00
lib mmap locking API: use coccinelle to convert mmap_sem rwsem call sites 2020-06-09 09:39:14 -07:00
mach-actions ARM: actions: Drop unneeded select of COMMON_CLK 2020-05-15 23:27:37 +02:00
mach-alpine ARM: alpine: Drop unneeded select of HAVE_SMP 2020-05-15 23:27:37 +02:00
mach-artpec
mach-asm9260 ARM: asm9260: Drop unneeded select of GENERIC_CLOCKEVENTS 2020-05-15 23:27:37 +02:00
mach-aspeed ARM: aspeed: Drop unneeded select of HAVE_SMP 2020-05-15 23:27:37 +02:00
mach-at91 ARM: at91: Replace HTTP links with HTTPS ones 2020-07-18 00:59:26 +02:00
mach-axxia
mach-bcm ARM: bcm: Select ARM_TIMER_SP804 for ARCH_BCM_NSP 2020-06-14 15:09:49 -07:00
mach-berlin ARM: berlin: Drop unneeded select of HAVE_SMP 2020-05-15 23:27:37 +02:00
mach-clps711x ARM: clps711x: Drop unneeded select of multi-platform selected options 2020-05-15 23:27:37 +02:00
mach-cns3xxx ARM: cns3xxx: replace setup_irq() by request_irq() 2020-03-27 14:11:47 +01:00
mach-davinci ARM: davinci: dm646x-evm: Simplify error handling in 'evm_sw_setup()' 2020-07-22 00:34:21 +05:30
mach-digicolor
mach-dove
mach-ebsa110 mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
mach-efm32
mach-ep93xx ARM: ep93xx: Replace setup_irq() by request_irq() 2020-03-27 14:11:42 +01:00
mach-exynos ARM: SoC driver updates for v5.9 2020-08-03 19:30:59 -07:00
mach-footbridge treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
mach-gemini
mach-highbank
mach-hisi
mach-imx Merge remote-tracking branch 'spi/for-5.9' into spi-next 2020-07-29 14:52:00 +01:00
mach-integrator mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
mach-iop32x mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
mach-ixp4xx mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
mach-keystone mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
mach-lpc18xx
mach-lpc32xx
mach-mediatek ARM: mediatek: Replace <linux/clk-provider.h> by <linux/of_clk.h> 2020-05-15 22:55:06 +02:00
mach-meson
mach-milbeaut
mach-mmp This time around we have 4 lines of diff in the core framework, removing a 2020-06-10 11:42:19 -07:00
mach-moxart
mach-mstar ARM: mstar: Add machine for MStar/Sigmastar Armv7 SoCs 2020-07-28 11:13:49 +02:00
mach-mv78xx0
mach-mvebu ARM: mvebu: Drop unneeded select of HAVE_SMP 2020-05-15 23:27:38 +02:00
mach-mxs
mach-nomadik
mach-npcm
mach-nspire
mach-omap1 ARM: OMAP: Replace HTTP links with HTTPS ones 2020-07-13 11:37:54 -07:00
mach-omap2 ARM: SoC driver updates for v5.9 2020-08-03 19:30:59 -07:00
mach-orion5x
mach-oxnas ARM: oxnas: make ox820_boot_secondary static 2020-05-12 10:29:33 +02:00
mach-picoxcell
mach-prima2 ARM: prima2: Drop unneeded select of HAVE_SMP 2020-05-15 23:27:38 +02:00
mach-pxa ARM: pxa: remove Compulab pxa2xx boards 2020-05-26 00:10:57 +02:00
mach-qcom ARM: qcom: Add support for IPQ40xx 2020-03-31 21:03:27 +02:00
mach-rda
mach-realtek ARM: Prepare Realtek RTD1195 2020-04-12 23:13:38 +02:00
mach-realview VExpress modularization 2020-05-15 23:04:40 +02:00
mach-rockchip ARM: rockchip: fix spelling mistake "to" -> "too" 2020-04-13 09:40:45 +02:00
mach-rpc ARM: rpc: Change blacklist to quirklist in ecode.c file 2020-07-17 16:08:48 +02:00
mach-s3c24xx ARM: s3c24xx: Replace HTTP links with HTTPS ones 2020-07-20 16:42:28 +02:00
mach-s3c64xx ARM: s3c64xx: convert to use i2c_new_client_device() 2020-04-13 12:28:23 +02:00
mach-s5pv210
mach-sa1100 treewide: Remove uninitialized_var() usage 2020-07-16 12:35:15 -07:00
mach-shmobile ARM: shmobile: r8a7742: Basic SoC support 2020-04-28 10:13:58 +02:00
mach-socfpga ARM: socfpga: PM: add missing put_device() call in socfpga_setup_ocram_self_refresh() 2020-07-28 13:57:36 -05:00
mach-spear ARM: spear: replace setup_irq() by request_irq() 2020-03-27 14:11:45 +01:00
mach-sti Revert "ARM: sti: Implement dummy L2 cache's write_sec" 2020-06-28 14:46:54 +02:00
mach-stm32
mach-sunxi
mach-tango
mach-tegra mm: introduce include/linux/pgtable.h 2020-06-09 09:39:13 -07:00
mach-u300
mach-uniphier
mach-ux500
mach-versatile VExpress modularization 2020-05-15 23:04:40 +02:00
mach-vexpress Revert "ARM: vexpress: Don't select VEXPRESS_CONFIG" 2020-05-28 12:30:33 +02:00
mach-vt8500 ARM: Remove redundant CLKDEV_LOOKUP selects 2020-05-05 12:33:57 -07:00
mach-zx
mach-zynq mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
mm Remove uninitialized_var() macro for v5.9-rc1 2020-08-04 13:49:43 -07:00
net bpf, arm: Optimize ALU ARSH K using asr immediate instruction 2020-05-04 17:04:42 +02:00
nwfpe
oprofile
plat-omap ARM: OMAP: Replace HTTP links with HTTPS ones 2020-07-13 11:37:54 -07:00
plat-orion ARM: orion/gpio: Make use of for_each_requested_gpio() 2020-07-18 22:49:23 +02:00
plat-pxa
plat-samsung ARM: samsung: Use devm_platform_ioremap_resource() to simplify code 2020-04-21 11:35:00 +02:00
plat-versatile ARM: versatile: Remove dead sched_clock code 2020-04-16 13:02:17 +02:00
probes
tools arch: wire-up close_range() 2020-06-17 00:07:38 +02:00
vdso ARM: vdso: Don't use gcc plugins for building vgettimeofday.c 2020-06-24 07:48:27 -07:00
vfp
xen arm/xen: remove the unused macro GRANT_TABLE_PHYSADDR 2020-06-29 16:16:06 -07:00
Kconfig dma-mapping updates for 5.9 2020-08-04 17:29:57 -07:00
Kconfig-nommu
Kconfig.debug treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile ARM: mstar: Add machine for MStar/Sigmastar Armv7 SoCs 2020-07-28 11:13:49 +02:00