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authorIlias Apalodimas <[email protected]>2024-04-18 15:54:51 +0300
committerHeinrich Schuchardt <[email protected]>2024-04-20 08:22:24 +0200
commitbc3dd2493ef8c3c646aaeb3854a3f83558c50102 (patch)
tree596d9f6fb7ef47ce60074c1da5e8c07f82a67b0b /include/linux
parentc28d32f946f0d1c0780a02ab49dc2c1835370501 (diff)
efi_loader: Add OS notifications for SetVariable at runtime
Previous patches enable SetVariable at runtime using a volatile storage backend using EFI_RUNTIME_SERVICES_DATA allocared memory. Since there's no recommendation from the spec on how to notify the OS, add a volatile EFI variable that contains the filename relative to the ESP. OS'es can use that file and update it at runtime $~ efivar -p -n b2ac5fc9-92b7-4acd-aeac-11e818c3130c-RTStorageVolatile GUID: b2ac5fc9-92b7-4acd-aeac-11e818c3130c Name: "RTStorageVolatile" Attributes: Boot Service Access Runtime Service Access Value: 00000000 75 62 6f 6f 74 65 66 69 2e 76 61 72 00 |ubootefi.var. | Reviewed-by: Heinrich Schuchardt <[email protected]> Signed-off-by: Ilias Apalodimas <[email protected]>
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