| Message ID | 20200430143424.2787566-11-jean-philippe@linaro.org (mailing list archive) |
|---|---|
| State | Superseded, archived |
| Headers | show |
| Series | iommu: Shared Virtual Addressing for SMMUv3 | expand |
On 04/30/2020 03:34 PM, Jean-Philippe Brucker wrote: > The SMMUv3 driver would like to read the MMFR0 PARANGE field in order to > share CPU page tables with devices. Allow the driver to be built as > module by exporting the read_sanitized_ftr_reg() cpufeature symbol. > > Cc: Suzuki K Poulose <suzuki.poulose@arm.com> > Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com> > --- > arch/arm64/kernel/cpufeature.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c > index 9fac745aa7bb2..5f6adbf4ae893 100644 > --- a/arch/arm64/kernel/cpufeature.c > +++ b/arch/arm64/kernel/cpufeature.c > @@ -841,6 +841,7 @@ u64 read_sanitised_ftr_reg(u32 id) > BUG_ON(!regp); > return regp->sys_val; > } > +EXPORT_SYMBOL_GPL(read_sanitised_ftr_reg); > > #define read_sysreg_case(r) \ > case r: return read_sysreg_s(r) >
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 9fac745aa7bb2..5f6adbf4ae893 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -841,6 +841,7 @@ u64 read_sanitised_ftr_reg(u32 id) BUG_ON(!regp); return regp->sys_val; } +EXPORT_SYMBOL_GPL(read_sanitised_ftr_reg); #define read_sysreg_case(r) \ case r: return read_sysreg_s(r)
The SMMUv3 driver would like to read the MMFR0 PARANGE field in order to share CPU page tables with devices. Allow the driver to be built as module by exporting the read_sanitized_ftr_reg() cpufeature symbol. Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> --- arch/arm64/kernel/cpufeature.c | 1 + 1 file changed, 1 insertion(+)