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[v2,1/9] x86/xen: update xen_oldmem_pfn_is_ram() documentation

Message ID 20211005121430.30136-2-david@redhat.com (mailing list archive)
State New
Headers show
Series proc/vmcore: sanitize access to virtio-mem memory | expand

Commit Message

David Hildenbrand Oct. 5, 2021, 12:14 p.m. UTC 
The callback is only used for the vmcore nowadays.

Reviewed-by: Boris Ostrovsky <boris.ostrvsky@oracle.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
 arch/x86/xen/mmu_hvm.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)
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Patch

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.
  */