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-rw-r--r--src/cpu/x86/mp_init.c21
1 files changed, 13 insertions, 8 deletions
diff --git a/src/cpu/x86/mp_init.c b/src/cpu/x86/mp_init.c
index 331f3b552a..c747207f7c 100644
--- a/src/cpu/x86/mp_init.c
+++ b/src/cpu/x86/mp_init.c
@@ -1044,17 +1044,22 @@ static void fill_mp_state(struct mp_state *state, const struct mp_ops *ops)
/*
* Make sure there is enough room for the SMM descriptor
*/
- if (CONFIG(STM))
+ if (CONFIG(STM)) {
state->smm_save_state_size +=
sizeof(TXT_PROCESSOR_SMM_DESCRIPTOR);
- /* Currently, the CPU SMM save state size is based on a simplistic
- * algorithm. (align on 4K)
- * note: In the future, this will need to handle newer x86 processors
- * that require alignment of the save state on 32K boundaries.
- */
- state->smm_save_state_size =
- ALIGN_UP(state->smm_save_state_size, 0x1000);
+ /* Currently, the CPU SMM save state size is based on a simplistic
+ * algorithm. (align on 4K)
+ * note: In the future, this will need to handle newer x86 processors
+ * that require alignment of the save state on 32K boundaries.
+ * The alignment is done here because coreboot has a hard coded
+ * value of 0x400 for this value.
+ * Also, this alignment only works on CPUs less than 5 threads
+ */
+ if (CONFIG(STM))
+ state->smm_save_state_size =
+ ALIGN_UP(state->smm_save_state_size, 0x1000);
+ }
/*
* Default to smm_initiate_relocation() if trigger callback isn't