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efi_loader: detach runtime in ExitBootServices()

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Linux can be called with a command line parameter efi=novamap, cf.
commit 4e46c2a95621 ("efi/arm/arm64: Allow SetVirtualAddressMap() to be
omitted"). In this case SetVirtualAddressMap() is not called after
ExitBootServices().

OpenBSD 32bit does not call SetVirtualAddressMap() either.

Runtime services must be set to an implementation supported at runtime
in ExitBootServices().

Reported-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Suggested-by: Alexander Graf <agraf@csgraf.de>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt
2019-07-05 17:42:16 +02:00
parent b23ffcbe02
commit 7f95104d91
3 changed files with 6 additions and 1 deletions
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2
include/efi_loader.h
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@@ -333,6 +333,8 @@ void efi_variables_boot_exit_notify(void);
efi_status_t efi_root_node_register(void);
/* Called by bootefi to initialize runtime */
efi_status_t efi_initialize_system_table(void);
/* efi_runtime_detach() - detach unimplemented runtime functions */
void efi_runtime_detach(void);
/* Called by bootefi to make console interface available */
efi_status_t efi_console_register(void);
/* Called by bootefi to make all disk storage accessible as EFI objects */