diff options
Diffstat (limited to 'meta-arm/meta-arm-bsp/recipes-bsp/hafnium/files/tc/0003-feat-vhe-set-STAGE1_NS-while-mapping-memory-from-NWd.patch')
| -rw-r--r-- | meta-arm/meta-arm-bsp/recipes-bsp/hafnium/files/tc/0003-feat-vhe-set-STAGE1_NS-while-mapping-memory-from-NWd.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/meta-arm/meta-arm-bsp/recipes-bsp/hafnium/files/tc/0003-feat-vhe-set-STAGE1_NS-while-mapping-memory-from-NWd.patch b/meta-arm/meta-arm-bsp/recipes-bsp/hafnium/files/tc/0003-feat-vhe-set-STAGE1_NS-while-mapping-memory-from-NWd.patch new file mode 100644 index 0000000000..cd19f632c5 --- /dev/null +++ b/meta-arm/meta-arm-bsp/recipes-bsp/hafnium/files/tc/0003-feat-vhe-set-STAGE1_NS-while-mapping-memory-from-NWd.patch @@ -0,0 +1,41 @@ +From 41f3ff2f011da69ff81234769353955e51c7e588 Mon Sep 17 00:00:00 2001 +From: Davidson K <davidson.kumaresan@arm.com> +Date: Thu, 7 Oct 2021 12:20:08 +0530 +Subject: [PATCH] feat(vhe): set STAGE1_NS while mapping memory from NWd to SWd + +If the memory is shared by a VM executing in non secure world, attribute +MM_MODE_NS had to be set while mapping that in a S-EL0 SP executing in +secure world. It will not be needed for a S-EL1 SP since the NS bit is +available only for the stage 1 translations and the stage 1 translations +for a S-EL1 SP will be handled by a trusted OS running in S-EL1. + +Signed-off-by: Davidson K <davidson.kumaresan@arm.com> +Change-Id: I074e2d5a50a659bd3c097d797c4901f08d210b1b +Upstream-Status: Pending [Not submitted to upstream yet] +--- + src/ffa_memory.c | 12 ++++++++++++ + 1 file changed, 12 insertions(+) + +diff --git a/src/ffa_memory.c b/src/ffa_memory.c +index 5826cb2fdd4b..bae677633dea 100644 +--- a/src/ffa_memory.c ++++ b/src/ffa_memory.c +@@ -2618,6 +2618,18 @@ struct ffa_value ffa_memory_retrieve(struct vm_locked to_locked, + + memory_to_attributes = ffa_memory_permissions_to_mode( + permissions, share_state->sender_orig_mode); ++ ++ if (to_locked.vm->el0_partition) { ++ /* ++ * Get extra mapping attributes for the given VM ID. ++ * If the memory is shared by a VM executing in non secure ++ * world, attribute MM_MODE_NS had to be set while mapping ++ * that in a SP executing in secure world. ++ */ ++ memory_to_attributes |= arch_mm_extra_attributes_from_vm( ++ retrieve_request->sender); ++ } ++ + ret = ffa_retrieve_check_update( + to_locked, memory_region->sender, share_state->fragments, + share_state->fragment_constituent_counts, |