From: Hirokazu Honda hiroh@chromium.org
On ARM64, shared memory can have MT_NORMAL_TAGGED attribute when using the Memory Tagging Extension (MTE). The OP-TEE driver needs to recognize this as normal memory to allow sharing such buffers with the Secure World.
Signed-off-by: Hirokazu Honda hiroh@chromium.org --- drivers/tee/optee/call.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/tee/optee/call.c b/drivers/tee/optee/call.c index 9effe88049e9..e046aff61828 100644 --- a/drivers/tee/optee/call.c +++ b/drivers/tee/optee/call.c @@ -602,7 +602,8 @@ static bool is_normal_memory(pgprot_t p) return (((pgprot_val(p) & L_PTE_MT_MASK) == L_PTE_MT_WRITEALLOC) || ((pgprot_val(p) & L_PTE_MT_MASK) == L_PTE_MT_WRITEBACK)); #elif defined(CONFIG_ARM64) - return (pgprot_val(p) & PTE_ATTRINDX_MASK) == PTE_ATTRINDX(MT_NORMAL); + return ((pgprot_val(p) & PTE_ATTRINDX_MASK) == PTE_ATTRINDX(MT_NORMAL)) || + ((pgprot_val(p) & PTE_ATTRINDX_MASK) == PTE_ATTRINDX(MT_NORMAL_TAGGED)); #else #error "Unsupported architecture" #endif
On Thu, Apr 16, 2026 at 03:18:19PM -0700, Hirokazu Honda wrote:
From: Hirokazu Honda hiroh@chromium.org
On ARM64, shared memory can have MT_NORMAL_TAGGED attribute when using the Memory Tagging Extension (MTE). The OP-TEE driver needs to recognize this as normal memory to allow sharing such buffers with the Secure World.
Signed-off-by: Hirokazu Honda hiroh@chromium.org
drivers/tee/optee/call.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
Reviewed-by: Sumit Garg sumit.garg@oss.qualcomm.com
-Sumit
diff --git a/drivers/tee/optee/call.c b/drivers/tee/optee/call.c index 9effe88049e9..e046aff61828 100644 --- a/drivers/tee/optee/call.c +++ b/drivers/tee/optee/call.c @@ -602,7 +602,8 @@ static bool is_normal_memory(pgprot_t p) return (((pgprot_val(p) & L_PTE_MT_MASK) == L_PTE_MT_WRITEALLOC) || ((pgprot_val(p) & L_PTE_MT_MASK) == L_PTE_MT_WRITEBACK)); #elif defined(CONFIG_ARM64)
- return (pgprot_val(p) & PTE_ATTRINDX_MASK) == PTE_ATTRINDX(MT_NORMAL);
- return ((pgprot_val(p) & PTE_ATTRINDX_MASK) == PTE_ATTRINDX(MT_NORMAL)) ||
((pgprot_val(p) & PTE_ATTRINDX_MASK) == PTE_ATTRINDX(MT_NORMAL_TAGGED));#else #error "Unsupported architecture"
#endif
2.54.0.rc1.513.gad8abe7a5a-goog
Hi,
On Mon, Apr 20, 2026 at 2:29 PM Sumit Garg sumit.garg@kernel.org wrote:
On Thu, Apr 16, 2026 at 03:18:19PM -0700, Hirokazu Honda wrote:
From: Hirokazu Honda hiroh@chromium.org
On ARM64, shared memory can have MT_NORMAL_TAGGED attribute when using the Memory Tagging Extension (MTE). The OP-TEE driver needs to recognize this as normal memory to allow sharing such buffers with the Secure World.
Signed-off-by: Hirokazu Honda hiroh@chromium.org
drivers/tee/optee/call.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
Reviewed-by: Sumit Garg sumit.garg@oss.qualcomm.com
Looks good. I'm picking up this.
Cheers, Jens
Thanks Sumit and Jens for reviewing!
On Mon, Apr 27, 2026 at 6:42 AM Jens Wiklander jens.wiklander@linaro.org wrote:
Hi,
On Mon, Apr 20, 2026 at 2:29 PM Sumit Garg sumit.garg@kernel.org wrote:
On Thu, Apr 16, 2026 at 03:18:19PM -0700, Hirokazu Honda wrote:
From: Hirokazu Honda hiroh@chromium.org
On ARM64, shared memory can have MT_NORMAL_TAGGED attribute when using the Memory Tagging Extension (MTE). The OP-TEE driver needs to recognize this as normal memory to allow sharing such buffers with the Secure World.
Signed-off-by: Hirokazu Honda hiroh@chromium.org
drivers/tee/optee/call.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
Reviewed-by: Sumit Garg sumit.garg@oss.qualcomm.com
Looks good. I'm picking up this.
Cheers, Jens
op-tee@lists.trustedfirmware.org
-
Hirokazu Honda -
Jens Wiklander -
Sumit Garg