linux-kernel - [RFC PATCH 11/13] x86, ptdump: Add NR bit to page table dump

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Date:   Thu,  3 Oct 2019 14:23:58 -0700
From:   Rick Edgecombe <rick.p.edgecombe@...el.com>
To:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org, x86@...nel.org,
        linux-mm@...ck.org, luto@...nel.org, peterz@...radead.org,
        dave.hansen@...el.com, pbonzini@...hat.com,
        sean.j.christopherson@...el.com, keescook@...omium.org
Cc:     kristen@...ux.intel.com, deneen.t.dock@...el.com,
        Rick Edgecombe <rick.p.edgecombe@...el.com>
Subject: [RFC PATCH 11/13] x86, ptdump: Add NR bit to page table dump

Add printing of the NR permission to the page table dump code.

Signed-off-by: Rick Edgecombe <rick.p.edgecombe@...el.com>
---
 arch/x86/mm/dump_pagetables.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c
index ab67822fd2f4..8932aa9e3a9e 100644
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch/x86/mm/dump_pagetables.c
@@ -182,7 +182,7 @@ static void printk_prot(struct seq_file *m, pgprot_t prot, int level, bool dmsg)
 
 	if (!(pr & _PAGE_PRESENT)) {
 		/* Not present */
-		pt_dump_cont_printf(m, dmsg, "                              ");
+		pt_dump_cont_printf(m, dmsg, "                                 ");
 	} else {
 		if (pr & _PAGE_USER)
 			pt_dump_cont_printf(m, dmsg, "USR ");
@@ -219,6 +219,10 @@ static void printk_prot(struct seq_file *m, pgprot_t prot, int level, bool dmsg)
 			pt_dump_cont_printf(m, dmsg, "NX ");
 		else
 			pt_dump_cont_printf(m, dmsg, "x  ");
+		if (pr & _PAGE_NR)
+			pt_dump_cont_printf(m, dmsg, "NR ");
+		else
+			pt_dump_cont_printf(m, dmsg, "r  ");
 	}
 	pt_dump_cont_printf(m, dmsg, "%s\n", level_name[level]);
 }
-- 
2.17.1