[Xen-devel] [PATCH for-4.11] x86/XPTI: Fix up stale comments concerning mappings

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

The comments became stale when c/s d1d6fc97d66 "x86/xpti: really hide almost
all of Xen image" altered how the stubs were mapped.

Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
CC: Jan Beulich <JBeulich@xxxxxxxx>
CC: Juergen Gross <jgross@xxxxxxxx>
---
 xen/arch/x86/smpboot.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/arch/x86/smpboot.c b/xen/arch/x86/smpboot.c
index fd9050e..fcc383d 100644
--- a/xen/arch/x86/smpboot.c
+++ b/xen/arch/x86/smpboot.c
@@ -794,7 +794,7 @@ static int setup_cpu_root_pgt(unsigned int cpu)
     /* SH_LINEAR_PT inserted together with guest mappings. */
     /* PERDOMAIN inserted during context switch. */
 
-    /* One-time setup of common_pgt, which maps .text.entry and the stubs. */
+    /* One-time setup of common_pgt, which maps .text.entry. */
     if ( unlikely(!root_get_intpte(common_pgt)) )
     {
         const char *ptr;
@@ -811,7 +811,7 @@ static int setup_cpu_root_pgt(unsigned int cpu)
 
     rpt[root_table_offset(XEN_VIRT_START)] = common_pgt;
 
-    /* Install direct map page table entries for stack, IDT, and TSS. */
+    /* Install per-pcpu mappings for the stack, IDT, TSS and stubs. */
     for ( off = rc = 0; !rc && off < STACK_SIZE; off += PAGE_SIZE )
         if ( !memguard_is_stack_guard_page(off) )
             rc = clone_mapping(__va(__pa(stack_base[cpu])) + off, rpt);
-- 
2.1.4


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