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| /optee_os/core/arch/arm/kernel/ |
| H A D | link.mk | 39d1f75ca51cae89f08dbb312e2c2921fc45ba35 Tue Oct 13 14:08:28 UTC 2015 Pascal Brand <pascal.brand@st.com> pager: remove pages used by scratch memory
Libtomcrypt is using, because of mpa, some scratch memory
used in intermediate computation. These data are useless
once the acipher computation is completed. That means
that these data pages can be unmapped.
On QEMU, compiled with CFG_WITH_PAGER=y, "time xtest 4006" returns:
- Before the patch
real 3m 46.24s
user 0m 0.19s
sys 3m 45.51s
- After the patch
real 1m 29.00s
user 0m 0.17s
sys 1m 28.51s
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Tested-by: Pascal Brand <pascal.brand@linaro.org> (QEMU with CFG_WITH_PAGER=y)
Signed-off-by: Pascal Brand <pascal.brand@st.com>
|
| /optee_os/core/arch/arm/mm/ |
| H A D | tee_pager.c | 39d1f75ca51cae89f08dbb312e2c2921fc45ba35 Tue Oct 13 14:08:28 UTC 2015 Pascal Brand <pascal.brand@st.com> pager: remove pages used by scratch memory
Libtomcrypt is using, because of mpa, some scratch memory
used in intermediate computation. These data are useless
once the acipher computation is completed. That means
that these data pages can be unmapped.
On QEMU, compiled with CFG_WITH_PAGER=y, "time xtest 4006" returns:
- Before the patch
real 3m 46.24s
user 0m 0.19s
sys 3m 45.51s
- After the patch
real 1m 29.00s
user 0m 0.17s
sys 1m 28.51s
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Tested-by: Pascal Brand <pascal.brand@linaro.org> (QEMU with CFG_WITH_PAGER=y)
Signed-off-by: Pascal Brand <pascal.brand@st.com>
|