From: Alan Cox <alan@linux.intel.com>
Date: Tue, 8 Jan 2019 17:02:53 +0000 (+0000)
Subject: bank8k: allow for no zero base
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=73a11cfb13e9f2d73fcd02f328ad494d73b88adc;p=FUZIX.git

bank8k: allow for no zero base

Tormod's patch worked by changing pagemap_realloc to pass top not size. In
fact we want to pass size so that

- We don't break any other banking code
- We can still sanely handle platforms with multiple processes per bank where
  pagemap_realloc has a real job. It's not quite that simple there are some
  other 32bit changes it would need, but lets not dig a hole to fall down
---

diff --git a/Kernel/bank8k.c b/Kernel/bank8k.c
index e482b3ec..9b291fc9 100644
--- a/Kernel/bank8k.c
+++ b/Kernel/bank8k.c
@@ -216,7 +216,7 @@ int pagemap_alloc(ptptr p)
 int pagemap_realloc(usize_t code, usize_t size, usize_t stack)
 {
 	int8_t have = maps_needed(udata.u_top);
-	int8_t want = maps_needed(size);
+	int8_t want = maps_needed(size + MAPBASE);
 	uint8_t *ptr = (uint8_t *)udata.u_page;
 	int i;