Some machine may have broken firmware so that GHES and firmware first
mode should be disabled. This patch adds support to that.
Signed-off-by: Huang Ying <ying.huang@xxxxxxxxx>
Reviewed-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Reviewed-by: Matthew Garrett <mjg@xxxxxxxxxx>
---
drivers/acpi/apei/ghes.c | 8 ++++++++
drivers/acpi/apei/hest.c | 17 +++++++++--------
include/acpi/apei.h | 1 +
3 files changed, 18 insertions(+), 8 deletions(-)
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -77,6 +77,9 @@ struct ghes {
};
};
+int ghes_disable;
+module_param_named(disable, ghes_disable, bool, 0);
+
static int ghes_panic_timeout __read_mostly = 30;
/*
@@ -665,6 +668,11 @@ static int __init ghes_init(void)
return -EINVAL;
}
+ if (ghes_disable) {
+ pr_info(GHES_PFX "GHES is not enabled!\n");
+ return -EINVAL;
+ }
+
rc = ghes_ioremap_init();
if (rc)
goto err;
--- a/drivers/acpi/apei/hest.c
+++ b/drivers/acpi/apei/hest.c
@@ -231,16 +231,17 @@ void __init acpi_hest_init(void)
goto err;
}
- rc = apei_hest_parse(hest_parse_ghes_count, &ghes_count);
- if (rc)
- goto err;
-
- rc = hest_ghes_dev_register(ghes_count);
- if (!rc) {
- pr_info(HEST_PFX "Table parsing has been initialized.\n");
- return;
+ if (!ghes_disable) {
+ rc = apei_hest_parse(hest_parse_ghes_count, &ghes_count);
+ if (rc)
+ goto err;
+ rc = hest_ghes_dev_register(ghes_count);
+ if (rc)
+ goto err;
}
+ pr_info(HEST_PFX "Table parsing has been initialized.\n");
+ return;
err:
hest_disable = 1;
}
--- a/include/acpi/apei.h
+++ b/include/acpi/apei.h
@@ -18,6 +18,7 @@
extern int hest_disable;
extern int erst_disable;
+extern int ghes_disable;
#ifdef CONFIG_ACPI_APEI
void __init acpi_hest_init(void);
--
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