From: Andrew Cooper <andrew.cooper3@citrix.com>
Date: Tue, 2 Apr 2024 14:19:11 +0000 (+0200)
Subject: xen/virtual-region: Include rodata pointers
X-Git-Tag: RELEASE-4.17.4~46
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=335cbb55567b20df8e8bd2d1b340609e272ddab6;p=xen.git

xen/virtual-region: Include rodata pointers

These are optional.  .init doesn't distinguish types of data like this, and
livepatches don't necesserily have any .rodata either.

No functional change.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Ross Lagerwall <ross.lagerwall@citrix.com>
master commit: ef969144a425e39f5b214a875b5713d0ea8575fb
master date: 2024-03-07 14:24:42 +0000
---

diff --git a/xen/common/livepatch.c b/xen/common/livepatch.c
index 29395f286f..28c09ddf58 100644
--- a/xen/common/livepatch.c
+++ b/xen/common/livepatch.c
@@ -788,6 +788,12 @@ static int prepare_payload(struct payload *payload,
     region->text_start = payload->text_addr;
     region->text_end = payload->text_addr + payload->text_size;
 
+    if ( payload->ro_size )
+    {
+        region->rodata_start = payload->ro_addr;
+        region->rodata_end = payload->ro_addr + payload->ro_size;
+    }
+
     /* Optional sections. */
     for ( i = 0; i < BUGFRAME_NR; i++ )
     {
diff --git a/xen/common/virtual_region.c b/xen/common/virtual_region.c
index b22ffb75c4..9c566f8ec9 100644
--- a/xen/common/virtual_region.c
+++ b/xen/common/virtual_region.c
@@ -13,6 +13,8 @@ static struct virtual_region core = {
     .list = LIST_HEAD_INIT(core.list),
     .text_start = _stext,
     .text_end = _etext,
+    .rodata_start = _srodata,
+    .rodata_end = _erodata,
 };
 
 /* Becomes irrelevant when __init sections are cleared. */
diff --git a/xen/include/xen/virtual_region.h b/xen/include/xen/virtual_region.h
index 442a45bf1f..dcdc95ba49 100644
--- a/xen/include/xen/virtual_region.h
+++ b/xen/include/xen/virtual_region.h
@@ -22,6 +22,9 @@ struct virtual_region
     const void *text_start;                /* .text virtual address start. */
     const void *text_end;                  /* .text virtual address end. */
 
+    const void *rodata_start;              /* .rodata virtual address start (optional). */
+    const void *rodata_end;                /* .rodata virtual address end. */
+
     /* If this is NULL the default lookup mechanism is used. */
     symbols_lookup_t *symbols_lookup;