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Re: [PATCH v3][4.17] EFI: don't convert memory marked for runtime use to ordinary RAM
Hi Jan,
Sorry I missed this patch.
On 11/10/2022 10:41, Jan Beulich wrote:
efi_init_memory() in both relevant places is treating EFI_MEMORY_RUNTIME
higher priority than the type of the range. To avoid accessing memory at
runtime which was re-used for other purposes, make
efi_arch_process_memory_map() follow suit. While in theory the same would
apply to EfiACPIReclaimMemory, we don't actually "reclaim" or clobber
that memory (converted to E820_ACPI on x86) there (and it would be a bug
if the Dom0 kernel tried to reclaim the range, bypassing Xen's memory
management, plus it would be at least bogus if it clobbered that space),
hence that type's handling can be left alone.
Fixes: bf6501a62e80 ("x86-64: EFI boot code")
Fixes: facac0af87ef ("x86-64: EFI runtime code")
Fixes: 6d70ea10d49f ("Add ARM EFI boot support")
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Acked-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
Release-acked-by: Henry Wang <Henry.Wang@xxxxxxx>
Reviewed-by: Julien Grall <jgrall@xxxxxxxxxx>
Cheers,
--
Julien Grall
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