GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-03-16 12:14:06 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Arm FF-A fix for v6.6

Browse source 
It has been reported that the driver sets the memory region attributes
 for MEM_LEND operation when the specification clearly states not to. The
 fix here addresses the issue by ensuring the memory region attributes are
 cleared for the memory lending operation.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEunHlEgbzHrJD3ZPhAEG6vDF+4pgFAmUUG70ACgkQAEG6vDF+
 4pg0Og//dteLTtj/mHej4fIL3ih0qNN6Ih1NXlqfcgc4Yw7EcLhnKZabwGy3Ybdq
 4egdPwHXLPMS7XAxg7y2WWoMA7+raFYp8vYOWOjHdTPmgDjzxHMybMP3J31RSjfL
 gi4DoF8g2EF0bwtMvk0A3pTqgQG3YOfMupf9CLPZg5XOmPVDAq5R1zn3hu/Dz/ic
 5nkJNkA3VCmLrSzfSEQtC8vDPT0pNID6sLCgByJvx6qqPKAlO6Mhpe1f93N2BMsK
 Z24SjevzPHjGFS4MwaW8evDpdTuESUd0MQBV5/yCha8gvJOK2Q0629qLM5fpii7j
 ZxHkGaj1pSj9zqCCKOxJVFanxTEJQo8dAbzz446jB7pBkeT4T4sIAsHe+Jw7QIOS
 kFT3xOfZwYpCU7nJWEgOaDuNBlHFD5ZiP922tXatX6nj7gEopVpUSg0u1R9/BMHa
 DLK3xaF/Gd38KFN52WBV98+jFyE9dUYVu1PLG+uJDvKyS6PoKKmRckNxdtPDpEeH
 Lsez4ES9dbb2c+nCrAseUeuFW1D8HBEHo705MIGsefqfqISOrh1A3oj7gEwnv6ho
 ZOLKbSHX3ufx3WOm4R8aFtRafP7ZL8X6ovQDCzzYhAitnF2bp+zfjJOkJv4X7OLV
 jz8AtdwCT6qW5rg0PCDNo8CrAYN1GA0/+ria17JpKF37Pk5hdjQ=
 =Flo6
 -----END PGP SIGNATURE-----
gpgsig -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEiK/NIGsWEZVxh/FrYKtH/8kJUicFAmUVJ9oACgkQYKtH/8kJ
 UidcBRAApJskT2y1BVlZZTtyUuu9cck/dfGfzhP50XiO6m0YYr6W+RnLjWj4o/oc
 5Ct7eJsqh8jZ2XbZQfXY/eojts/xyfFq48MBWBkuMECE3M5rsjkPTu1N+WOJiVUt
 BlbLmwx5xNuK2JbSdHN/Et4xguau6ZbhZ08nW8+uHOJtxquUjCapWqN9r5cYki8V
 NQhdaaT0/YlA4sMPsCN9HkEVR0VYlHkcQo9f8onXg93rUpK3p7hWhz5pUZDJEwZE
 CSb+is4ADsNAzioLCTZh9MDMQoaduxQXzw8QjYKY6mxK1VIFDmDmblMl7UFARQs7
 ufvqzGZpCqVNrjQK7+vHXakrG5hOA2VmMRhMt60KrY4AVTgpZYNzGqpIz7dlOuxd
 8FDwjHEeYZXgtfUA6dxD19oRi49shO3HB34YrTbGi7GOOjuWJl4c3wJtR/Ps1vha
 GFnggmOqjRFYi+YBzShCn/pZGgcAHWadcLn3zklCcnNaRj+2voXyqKOkDbuhteFs
 4zt1ggvykeAQ8mU9+HwiwIZek9X7hsKI7bz2jKTV8uugqr5DDTnY7vwOtGvZochk
 GBpEZH12e5Cf9QO74Nam5kvLJqpj3orhSul0jnWZ1R8n9Obv0IH/ytthctDnP4Ek
 XFqGiBoQzDTNIjANcmr0UG46l+95J9Lbi7iyk+tX7z5+wVxkQ7U=
 =MdPT
 -----END PGP SIGNATURE-----

Merge tag 'ffa-fix-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes

Arm FF-A fix for v6.6

It has been reported that the driver sets the memory region attributes
for MEM_LEND operation when the specification clearly states not to. The
fix here addresses the issue by ensuring the memory region attributes are
cleared for the memory lending operation.

* tag 'ffa-fix-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_ffa: Don't set the memory region attributes for MEM_LEND

Link: https://lore.kernel.org/r/20230927121555.158619-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2023-09-28 09:14:24 +02:00
commit 79684f2ea3
1 changed files with 14 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
drivers/firmware/arm_ffa/driver.c
View file

@ -397,6 +397,19 @@ static u32 ffa_get_num_pages_sg(struct scatterlist *sg)
return num_pages;
}
static u8 ffa_memory_attributes_get(u32 func_id)
{
/*
* For the memory lend or donate operation, if the receiver is a PE or
* a proxy endpoint, the owner/sender must not specify the attributes
*/
if (func_id == FFA_FN_NATIVE(MEM_LEND) ||
func_id == FFA_MEM_LEND)
return 0;
return FFA_MEM_NORMAL | FFA_MEM_WRITE_BACK | FFA_MEM_INNER_SHAREABLE;
}
static int
ffa_setup_and_transmit(u32 func_id, void *buffer, u32 max_fragsize,
struct ffa_mem_ops_args *args)
@ -413,8 +426,7 @@ ffa_setup_and_transmit(u32 func_id, void *buffer, u32 max_fragsize,
mem_region->tag = args->tag;
mem_region->flags = args->flags;
mem_region->sender_id = drv_info->vm_id;
mem_region->attributes = FFA_MEM_NORMAL | FFA_MEM_WRITE_BACK |
FFA_MEM_INNER_SHAREABLE;
mem_region->attributes = ffa_memory_attributes_get(func_id);
ep_mem_access = &mem_region->ep_mem_access[0];
for (idx = 0; idx < args->nattrs; idx++, ep_mem_access++) {