hurd: Make io port access granular and go through pci-arbiterfix-ioperm

1 files changed, 4 insertions, 2 deletions

diff --git a/src/x86_pci.c b/src/x86_pci.c
index dfe3fa3..0207e2f 100644
--- a/src/x86_pci.c
+++ b/src/x86_pci.c
@@ -45,7 +45,9 @@
 int
 x86_enable_io(void)
 {
-    if (!ioperm(0, 0xffff, 1))
+    /* The first process to claim this gets to be the pci-arbiter
+     * and mach will eventually reject all subsequent requests to any overlapping ranges */
+    if (!ioperm(PCI_CFG1_BASE, PCI_CFG1_BASE + PCI_CFG1_SIZE - 1, 1))
         return 0;
     return errno;
 }
@@ -53,7 +55,7 @@ x86_enable_io(void)
 int
 x86_disable_io(void)
 {
-    if (!ioperm(0, 0xffff, 0))
+    if (!ioperm(PCI_CFG1_BASE, PCI_CFG1_BASE + PCI_CFG1_SIZE - 1, 0))
         return 0;
     return errno;
 }