Searched hist:"8 e01b4b9824fd8e21edbc40b503679f52277da52" (Results 1 – 3 of 3) sorted by relevance
| /optee_os/core/arch/arm/include/kernel/ |
| H A D | vfp.h | 8e01b4b9824fd8e21edbc40b503679f52277da52 Wed Oct 03 08:45:53 UTC 2018 Jens Wiklander <jens.wiklander@linaro.org> core: arm32: fix saving vfp state
Prior to this patch TF-A in AArch32 didn't save the normal world VFP
data registers and thus always restored then as zeroes and causing
problems in normal world.
With this patch if running with TF-A in AArch32 save the VFP state using
the same logic as in AArch64. Since TF-A saves and restores CPACR_EL1 we
cannot tell if normal world currently is using VFP or not so we have to
assume that it is and always save the VFP data registers if they are
about to be changed.
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Tested-by: Jens Wiklander <jens.wiklander@linaro.org> (Hikey AArch32)
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
|
| /optee_os/core/arch/arm/kernel/ |
| H A D | vfp.c | 8e01b4b9824fd8e21edbc40b503679f52277da52 Wed Oct 03 08:45:53 UTC 2018 Jens Wiklander <jens.wiklander@linaro.org> core: arm32: fix saving vfp state
Prior to this patch TF-A in AArch32 didn't save the normal world VFP
data registers and thus always restored then as zeroes and causing
problems in normal world.
With this patch if running with TF-A in AArch32 save the VFP state using
the same logic as in AArch64. Since TF-A saves and restores CPACR_EL1 we
cannot tell if normal world currently is using VFP or not so we have to
assume that it is and always save the VFP data registers if they are
about to be changed.
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Tested-by: Jens Wiklander <jens.wiklander@linaro.org> (Hikey AArch32)
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
|
| H A D | thread.c | 8e01b4b9824fd8e21edbc40b503679f52277da52 Wed Oct 03 08:45:53 UTC 2018 Jens Wiklander <jens.wiklander@linaro.org> core: arm32: fix saving vfp state
Prior to this patch TF-A in AArch32 didn't save the normal world VFP
data registers and thus always restored then as zeroes and causing
problems in normal world.
With this patch if running with TF-A in AArch32 save the VFP state using
the same logic as in AArch64. Since TF-A saves and restores CPACR_EL1 we
cannot tell if normal world currently is using VFP or not so we have to
assume that it is and always save the VFP data registers if they are
about to be changed.
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Tested-by: Jens Wiklander <jens.wiklander@linaro.org> (Hikey AArch32)
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
|