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| author | Arnd Bergmann <arnd@arndb.de> | 2020-11-27 17:45:45 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2020-11-27 17:45:45 +0100 |
| commit | ae597565d13febc73b9066c05935c1003a57a03e (patch) | |
| tree | 89c948e3632438ac9d9a3e116651a7dbde38f792 /drivers/tee | |
| parent | 454a079b381a1fea3962f89016f55761b251f4bd (diff) | |
| parent | 853735e404244f5496cdb6188c5ed9a0f9627ee6 (diff) | |
Merge tag 'optee-valid-memory-type-for-v5.11' of git://git.linaro.org/people/jens.wiklander/linux-tee into arm/fixes
Add writeback to valid OP-TEE shared memory types
Allows OP-TEE to work with ARMv7 based single CPU systems by allowing
writeback cache policy for shared memory.
* tag 'optee-valid-memory-type-for-v5.11' of git://git.linaro.org/people/jens.wiklander/linux-tee:
optee: add writeback to valid memory type
Link: https://lore.kernel.org/r/20201125120134.GA1642471@jade
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/tee')
| -rw-r--r-- | drivers/tee/optee/call.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/tee/optee/call.c b/drivers/tee/optee/call.c index 20b6fd7383c5..c981757ba0d4 100644 --- a/drivers/tee/optee/call.c +++ b/drivers/tee/optee/call.c @@ -534,7 +534,8 @@ void optee_free_pages_list(void *list, size_t num_entries) static bool is_normal_memory(pgprot_t p) { #if defined(CONFIG_ARM) - return (pgprot_val(p) & L_PTE_MT_MASK) == L_PTE_MT_WRITEALLOC; + 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); #else |