Searched hist:"77 ec4625" (Results 1 – 3 of 3) sorted by relevance
| /openbmc/linux/arch/arm64/include/asm/vdso/ |
| H A D | gettimeofday.h | 77ec4625 Thu Mar 18 12:07:37 CDT 2021 Will Deacon <will@kernel.org> arm64: vdso: Avoid ISB after reading from cntvct_el0
We can avoid the expensive ISB instruction after reading the counter in
the vDSO gettime functions by creating a fake address hazard against a
dummy stack read, just like we do inside the kernel.
Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Link: https://lore.kernel.org/r/20210318170738.7756-5-will@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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| /openbmc/linux/arch/arm64/include/asm/ |
| H A D | arch_timer.h | 77ec4625 Thu Mar 18 12:07:37 CDT 2021 Will Deacon <will@kernel.org> arm64: vdso: Avoid ISB after reading from cntvct_el0
We can avoid the expensive ISB instruction after reading the counter in
the vDSO gettime functions by creating a fake address hazard against a
dummy stack read, just like we do inside the kernel.
Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Link: https://lore.kernel.org/r/20210318170738.7756-5-will@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
|
| H A D | barrier.h | 77ec4625 Thu Mar 18 12:07:37 CDT 2021 Will Deacon <will@kernel.org> arm64: vdso: Avoid ISB after reading from cntvct_el0
We can avoid the expensive ISB instruction after reading the counter in
the vDSO gettime functions by creating a fake address hazard against a
dummy stack read, just like we do inside the kernel.
Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Link: https://lore.kernel.org/r/20210318170738.7756-5-will@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
|