[PATCH v1 1/8] x86/xen: update xen_oldmem_pfn_is_ram() documentation

From: David Hildenbrand
Date: Tue Sep 28 2021 - 14:23:48 EST


The callback is only used for the vmcore nowadays.

Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
---
arch/x86/xen/mmu_hvm.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/arch/x86/xen/mmu_hvm.c b/arch/x86/xen/mmu_hvm.c
index 57409373750f..b242d1f4b426 100644
--- a/arch/x86/xen/mmu_hvm.c
+++ b/arch/x86/xen/mmu_hvm.c
@@ -9,12 +9,9 @@

#ifdef CONFIG_PROC_VMCORE
/*
- * This function is used in two contexts:
- * - the kdump kernel has to check whether a pfn of the crashed kernel
- * was a ballooned page. vmcore is using this function to decide
- * whether to access a pfn of the crashed kernel.
- * - the kexec kernel has to check whether a pfn was ballooned by the
- * previous kernel. If the pfn is ballooned, handle it properly.
+ * The kdump kernel has to check whether a pfn of the crashed kernel
+ * was a ballooned page. vmcore is using this function to decide
+ * whether to access a pfn of the crashed kernel.
* Returns 0 if the pfn is not backed by a RAM page, the caller may
* handle the pfn special in this case.
*/
--
2.31.1