The ESRT can be parsed if EFI_PARAVIRT is enabled, even if EFI_MEMMAP is
not. Also allow the ESRT to be in reclaimable memory, as that is where
future Xen versions will put it.
Reported-by: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Demi Marie Obenour <demi@xxxxxxxxxxxxxxxxxxxxxx>
Tested-by: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
---
drivers/firmware/efi/esrt.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/firmware/efi/esrt.c b/drivers/firmware/efi/esrt.c
index fb9fb70e1004132eff50c712c6fca05f7aeb1d57..87729c365be1a804bb84e0b1ab874042848327b4 100644
--- a/drivers/firmware/efi/esrt.c
+++ b/drivers/firmware/efi/esrt.c
@@ -247,7 +247,7 @@ void __init efi_esrt_init(void)
int rc;
phys_addr_t end;
- if (!efi_enabled(EFI_MEMMAP))
+ if (!efi_enabled(EFI_MEMMAP) && !efi_enabled(EFI_PARAVIRT))
return;
pr_debug("esrt-init: loading.\n");
@@ -258,7 +258,9 @@ void __init efi_esrt_init(void)
if (rc < 0 ||
(!(md.attribute & EFI_MEMORY_RUNTIME) &&
md.type != EFI_BOOT_SERVICES_DATA &&
- md.type != EFI_RUNTIME_SERVICES_DATA)) {
+ md.type != EFI_RUNTIME_SERVICES_DATA &&
+ md.type != EFI_ACPI_RECLAIM_MEMORY &&
+ md.type != EFI_ACPI_MEMORY_NVS)) {
pr_warn("ESRT header is not in the memory map.\n");
return;
}
--
Sincerely,
Demi Marie Obenour (she/her/hers)
Invisible Things Lab
