diff mbox series

[10/20] x86/mce/amd: Prep DFR handler before enabling banks

Message ID 20231118193248.1296798-11-yazen.ghannam@amd.com
State New
Headers
Series MCA Updates |

Commit Message

Yazen Ghannam Nov. 18, 2023, 7:32 p.m. UTC 
  Scalable MCA systems use the per-bank MCA_CONFIG register to enable
deferred error interrupts. This is done as part of SMCA configuration.

Currently, the deferred error interrupt handler is set up after SMCA
configuration.

Move the deferred error interrupt handler set up before SMCA
configuration. This ensures the kernel is ready to receive the
interrupts before the hardware is configured to send them.

Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
---
 arch/x86/kernel/cpu/mce/amd.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/arch/x86/kernel/cpu/mce/amd.c b/arch/x86/kernel/cpu/mce/amd.c
index c8c92e048f56..4fddc5c8ae0e 100644
--- a/arch/x86/kernel/cpu/mce/amd.c
+++ b/arch/x86/kernel/cpu/mce/amd.c
@@ -595,6 +595,9 @@  static void deferred_error_interrupt_enable(struct cpuinfo_x86 *c)
 	u32 low = 0, high = 0;
 	int def_offset = -1, def_new;
 
+	if (!mce_flags.succor)
+		return;
+
 	if (rdmsr_safe(MSR_CU_DEF_ERR, &low, &high))
 		return;
 
@@ -774,6 +777,7 @@  void mce_amd_feature_init(struct cpuinfo_x86 *c)
 	u32 low = 0, high = 0, address = 0;
 	int offset = -1;
 
+	deferred_error_interrupt_enable(c);
 
 	for (bank = 0; bank < this_cpu_read(mce_num_banks); ++bank) {
 		if (mce_flags.smca)
@@ -800,9 +804,6 @@  void mce_amd_feature_init(struct cpuinfo_x86 *c)
 			offset = prepare_threshold_block(bank, block, address, offset, high);
 		}
 	}
-
-	if (mce_flags.succor)
-		deferred_error_interrupt_enable(c);
 }
 
 /*