Re: [PATCH v5 14/32] efi: Add an EFI table address match function

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On 5/15/2017 1:09 PM, Borislav Petkov wrote:
On Tue, Apr 18, 2017 at 04:18:48PM -0500, Tom Lendacky wrote:
Add a function that will determine if a supplied physical address matches
the address of an EFI table.

Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx>
---
 drivers/firmware/efi/efi.c |   33 +++++++++++++++++++++++++++++++++
 include/linux/efi.h        |    7 +++++++
 2 files changed, 40 insertions(+)

diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index b372aad..8f606a3 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -55,6 +55,25 @@ struct efi __read_mostly efi = {
 };
 EXPORT_SYMBOL(efi);

+static unsigned long *efi_tables[] = {
+	&efi.mps,
+	&efi.acpi,
+	&efi.acpi20,
+	&efi.smbios,
+	&efi.smbios3,
+	&efi.sal_systab,
+	&efi.boot_info,
+	&efi.hcdp,
+	&efi.uga,
+	&efi.uv_systab,
+	&efi.fw_vendor,
+	&efi.runtime,
+	&efi.config_table,
+	&efi.esrt,
+	&efi.properties_table,
+	&efi.mem_attr_table,
+};
+
 static bool disable_runtime;
 static int __init setup_noefi(char *arg)
 {
@@ -854,6 +873,20 @@ int efi_status_to_err(efi_status_t status)
 	return err;
 }

+bool efi_table_address_match(unsigned long phys_addr)

efi_is_table_address() reads easier/better in the code.

Will do.

Thanks,
Tom



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