michaelh/zephyr
1
0
Fork 0
Code Releases Activity

AArch64: Do not use CONFIG_GEN_PRIV_STACKS

Browse source 
We are setting CONFIG_GEN_PRIV_STACKS when AArch64 actually uses a
statically allocated privileged stack.

This error was not captured by the tests because we only verify whether
a read/write to a privileged stack is failing, but it can fail for a lot
of reasons including when the pointer to the privileged stack is not
initialized at all, like in this case.

With this patch we deselect CONFIG_GEN_PRIV_STACKS and we fix the
mem_protect/userspace test to correctly probe the privileged stack.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
This commit is contained in:
Carlo Caione 2021-03-24 15:55:44 +01:00 • committed by Anas Nashif
commit 807991e15f
3 changed files with 18 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

8
include/arch/arm/aarch64/thread_stack.h
View file

@ -47,4 +47,12 @@
#define ARCH_KERNEL_STACK_RESERVED 0
#define ARCH_KERNEL_STACK_OBJ_ALIGN ARCH_STACK_PTR_ALIGN
#ifndef _ASMLANGUAGE
struct z_arm64_thread_stack_header {
char privilege_stack[CONFIG_PRIVILEGED_STACK_SIZE];
} __packed __aligned(Z_ARM64_STACK_BASE_ALIGN);
#endif /* _ASMLANGUAGE */
#endif /* ZEPHYR_INCLUDE_ARCH_ARM_AARCH64_THREAD_STACK_H_ */