The Intel SIPI (start-up inter-processor interrupt) vector is the entry
point for each secondary CPU (also called an AP - applications processor).
The assembler and C code are linked, so add comments to indicate this.
Signed-off-by: Simon Glass <s...@chromium.org>
---
arch/x86/cpu/sipi_vector.S | 1 +
arch/x86/include/asm/sipi.h | 1 +
2 files changed, 2 insertions(+)
diff --git a/arch/x86/cpu/sipi_vector.S b/arch/x86/cpu/sipi_vector.S
index 0c4a157..94c0f5a 100644
--- a/arch/x86/cpu/sipi_vector.S
+++ b/arch/x86/cpu/sipi_vector.S
@@ -193,6 +193,7 @@ load_msr:
mov c_handler, %esi
call *%esi
+ /* This matches struct sipi_param */
.align 4
.globl sipi_params
sipi_params:
diff --git a/arch/x86/include/asm/sipi.h b/arch/x86/include/asm/sipi.h
index 25d7d31..da91a48 100644
--- a/arch/x86/include/asm/sipi.h
+++ b/arch/x86/include/asm/sipi.h
@@ -42,6 +42,7 @@ struct __packed sipi_params_16bit {
* struct sipi_params - 32-bit SIP entry-point parameters
*
* These are used by the AP init code and must be set up before the APs start.
+ * The members must match with the sipi_params layout in sipi_vector.S.
*
* The stack area extends down from @stack_top, with @stack_size allocated
* for each AP.
--
2.7.0.rc3.207.g0ac5344
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