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authorSami Tolvanen <samitolvanen@google.com>2020-12-01 02:34:42 +0300
committerWill Deacon <will@kernel.org>2020-12-01 14:23:34 +0300
commitac20ffbb0279aae7be48567fb734eae7d050769e (patch)
tree15c0a54aa692cf18d40cd21b48964f77f7d13ea2 /include/linux/scs.h
parenta2abe7cbd8fe2db5ff386c968e2273d9dc6c468d (diff)
downloadlinux-ac20ffbb0279aae7be48567fb734eae7d050769e.tar.xz
arm64: scs: use vmapped IRQ and SDEI shadow stacks
Use scs_alloc() to allocate also IRQ and SDEI shadow stacks instead of using statically allocated stacks. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Acked-by: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20201130233442.2562064-3-samitolvanen@google.com [will: Move CONFIG_SHADOW_CALL_STACK check into init_irq_scs()] Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'include/linux/scs.h')
-rw-r--r--include/linux/scs.h4
1 files changed, 0 insertions, 4 deletions
diff --git a/include/linux/scs.h b/include/linux/scs.h
index 2a506c2a16f4..18122d9e17ff 100644
--- a/include/linux/scs.h
+++ b/include/linux/scs.h
@@ -22,10 +22,6 @@
/* An illegal pointer value to mark the end of the shadow stack. */
#define SCS_END_MAGIC (0x5f6UL + POISON_POINTER_DELTA)
-/* Allocate a static per-CPU shadow stack */
-#define DEFINE_SCS(name) \
- DEFINE_PER_CPU(unsigned long [SCS_SIZE/sizeof(long)], name) \
-
#define task_scs(tsk) (task_thread_info(tsk)->scs_base)
#define task_scs_sp(tsk) (task_thread_info(tsk)->scs_sp)