linux-kernel - [RFC PATCH 1/3] x86/boot/e820: Make __e820__mapped

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Message-Id: <20220611204859.234975-1-atomlin@redhat.com>
Date:   Sat, 11 Jun 2022 21:48:57 +0100
From:   Aaron Tomlin <atomlin@...hat.com>
To:     tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
        dave.hansen@...ux.intel.com, joro@...tes.org, will@...nel.org,
        dwmw2@...radead.org, baolu.lu@...ux.intel.com, hpa@...or.com
Cc:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        atomlin@...mlin.com
Subject: [RFC PATCH 1/3] x86/boot/e820: Make __e820__mapped_all() external

No functional change.

This patch allows __e820__mapped_all() to be available for
external use, in preparation to enhance the error message
generated by arch_rmrr_sanity_check().

Signed-off-by: Aaron Tomlin <atomlin@...hat.com>
---
 arch/x86/include/asm/e820/api.h | 1 +
 arch/x86/kernel/e820.c          | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/e820/api.h b/arch/x86/include/asm/e820/api.h
index e8f58ddd06d9..bf78daa08897 100644
--- a/arch/x86/include/asm/e820/api.h
+++ b/arch/x86/include/asm/e820/api.h
@@ -13,6 +13,7 @@ extern unsigned long pci_mem_start;
 extern bool e820__mapped_raw_any(u64 start, u64 end, enum e820_type type);
 extern bool e820__mapped_any(u64 start, u64 end, enum e820_type type);
 extern bool e820__mapped_all(u64 start, u64 end, enum e820_type type);
+struct e820_entry *__e820__mapped_all(u64 start, u64 end, enum e820_type type);
 
 extern void e820__range_add   (u64 start, u64 size, enum e820_type type);
 extern u64  e820__range_update(u64 start, u64 size, enum e820_type old_type, enum e820_type new_type);
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index f267205f2d5a..09b1c863a766 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -109,7 +109,7 @@ EXPORT_SYMBOL_GPL(e820__mapped_any);
  * Note: this function only works correctly once the E820 table is sorted and
  * not-overlapping (at least for the range specified), which is the case normally.
  */
-static struct e820_entry *__e820__mapped_all(u64 start, u64 end,
+struct e820_entry *__e820__mapped_all(u64 start, u64 end,
 					     enum e820_type type)
 {
 	int i;
-- 
2.34.1