In the case of memory error injection, einj_error_inject() checks
if a target address is System RAM. Change this check to allow
injecting a memory error to NVDIMM by calling region_intersects()
with IORES_DESC_PERSISTENT_MEMORY. This enables memory error
testing on both System RAM and NVDIMM.
In addition, page_is_ram() is replaced with region_intersects()
with IORESOURCE_SYSTEM_RAM, so that it can verify a target address
range with the requested size.
Cc: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Vishal Verma <vishal.l.verma@xxxxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: linux-nvdimm@xxxxxxxxxxxx
Cc: linux-acpi@xxxxxxxxxxxxxxx
Acked-by: Tony Luck <tony.luck@xxxxxxxxx>
Reviewed-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Signed-off-by: Toshi Kani <toshi.kani@xxxxxxx>
---
drivers/acpi/apei/einj.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj.c
index 0431883..16cae66 100644
--- a/drivers/acpi/apei/einj.c
+++ b/drivers/acpi/apei/einj.c
@@ -519,7 +519,7 @@ static int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
u64 param3, u64 param4)
{
int rc;
- unsigned long pfn;
+ u64 base_addr, size;
/* If user manually set "flags", make sure it is legal */
if (flags && (flags &
@@ -545,10 +545,17 @@ static int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
/*
* Disallow crazy address masks that give BIOS leeway to pick
* injection address almost anywhere. Insist on page or
- * better granularity and that target address is normal RAM.
+ * better granularity and that target address is normal RAM or
+ * NVDIMM.
*/
- pfn = PFN_DOWN(param1 & param2);
- if (!page_is_ram(pfn) || ((param2 & PAGE_MASK) != PAGE_MASK))
+ base_addr = param1 & param2;
+ size = ~param2 + 1;
+
+ if (((param2 & PAGE_MASK) != PAGE_MASK) ||
+ ((region_intersects(base_addr, size, IORESOURCE_SYSTEM_RAM,
+ IORES_DESC_NONE) != REGION_INTERSECTS) &&
+ (region_intersects(base_addr, size, IORESOURCE_MEM,
+ IORES_DESC_PERSISTENT_MEMORY) != REGION_INTERSECTS)))
return -EINVAL;
inject:
--
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