| Message ID | 1525247602-1565-1-git-send-email-opensource.ganesh@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, May 02, 2018 at 03:53:21PM +0800, Ganesh Mahendran wrote: > Set ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT for arm64. This > enables Speculative Page Fault handler. Are there are tests for this? I'm really nervous about enabling it... Will > > Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com> > --- > This patch is on top of Laurent's v10 spf > --- > arch/arm64/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index eb2cf49..cd583a9 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -144,6 +144,7 @@ config ARM64 > select SPARSE_IRQ > select SYSCTL_EXCEPTION_TRACE > select THREAD_INFO_IN_TASK > + select ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT if SMP > help > ARM 64-bit (AArch64) Linux support. > > -- > 1.9.1 >
2018-05-02 20:23 GMT+08:00 Will Deacon <will.deacon@arm.com>: > On Wed, May 02, 2018 at 03:53:21PM +0800, Ganesh Mahendran wrote: >> Set ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT for arm64. This >> enables Speculative Page Fault handler. > > Are there are tests for this? I'm really nervous about enabling it... Hi, Will I test the arm64 spf on Qcom SDM845 cpu with kernel 4.9. It looks good for performance, and have not found stability issue yet. Thanks. > > Will > >> >> Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com> >> --- >> This patch is on top of Laurent's v10 spf >> --- >> arch/arm64/Kconfig | 1 + >> 1 file changed, 1 insertion(+) >> >> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig >> index eb2cf49..cd583a9 100644 >> --- a/arch/arm64/Kconfig >> +++ b/arch/arm64/Kconfig >> @@ -144,6 +144,7 @@ config ARM64 >> select SPARSE_IRQ >> select SYSCTL_EXCEPTION_TRACE >> select THREAD_INFO_IN_TASK >> + select ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT if SMP >> help >> ARM 64-bit (AArch64) Linux support. >> >> -- >> 1.9.1 >>
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index eb2cf49..cd583a9 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -144,6 +144,7 @@ config ARM64 select SPARSE_IRQ select SYSCTL_EXCEPTION_TRACE select THREAD_INFO_IN_TASK + select ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT if SMP help ARM 64-bit (AArch64) Linux support.
Set ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT for arm64. This enables Speculative Page Fault handler. Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com> --- This patch is on top of Laurent's v10 spf --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+)