From: Ben Gras <ben@minix3.org>
Date: Thu, 11 Dec 2008 17:36:33 +0000 (+0000)
Subject: don't force vm to print to serial; don't kill processes when they
X-Git-Tag: v3.1.4~175
X-Git-Url: http://zhaoyanbai.com/repos/Bv9ARM.ch08.html?a=commitdiff_plain;h=e4e3995fb00af2642eaccd2f8e5f21e624a3941f;p=minix.git

don't force vm to print to serial; don't kill processes when they
have 'bad' memory ranges (as it's the requestor's fault)
---

diff --git a/servers/vm/main.c b/servers/vm/main.c
index 38756594c..cec3b0fa2 100644
--- a/servers/vm/main.c
+++ b/servers/vm/main.c
@@ -340,9 +340,11 @@ PRIVATE void vm_init(void)
 	CALLMAP(VM_VFS_REPLY_CLOSE, do_vfs_reply, VFS_PROC_NR);
 }
 
+#if 0
 void kputc(int c)
 {
 	if(c == '\n')
 		ser_putc('\r');
 	ser_putc(c);
 }
+#endif
diff --git a/servers/vm/mmap.c b/servers/vm/mmap.c
index 722245195..f519f9538 100644
--- a/servers/vm/mmap.c
+++ b/servers/vm/mmap.c
@@ -94,6 +94,7 @@ PUBLIC int do_map_phys(message *m)
 	struct vmproc *vmp;
 	endpoint_t target;
 	struct vir_region *vr;
+	vir_bytes len;
 
 	target = m->VMMP_EP;
 	if(target == SELF)
@@ -107,8 +108,12 @@ PUBLIC int do_map_phys(message *m)
 	if(!(vmp->vm_flags & VMF_HASPT))
 		return ENXIO;
 
+	len = m->VMMP_LEN;
+	if(len % VM_PAGE_SIZE)
+		len += VM_PAGE_SIZE - (len % VM_PAGE_SIZE);
+
 	if(!(vr = map_page_region(vmp, arch_vir2map(vmp, vmp->vm_stacktop),
-		VM_DATATOP, (vir_bytes) m->VMMP_LEN, (vir_bytes)m->VMMP_PHADDR,
+		VM_DATATOP, len, (vir_bytes)m->VMMP_PHADDR,
 		VR_DIRECT | VR_NOPF | VR_WRITABLE, 0))) {
 		return ENOMEM;
 	}
diff --git a/servers/vm/pagefaults.c b/servers/vm/pagefaults.c
index b6a2db28b..ccfcb2036 100644
--- a/servers/vm/pagefaults.c
+++ b/servers/vm/pagefaults.c
@@ -159,20 +159,13 @@ PUBLIC void handle_memory(void)
 		}
 
 		if(r != OK) {
-			printf("VM: SIGSEGV %d, memory range not available\n",
+			printf("VM: memory range 0x%lx-0x%lx not available in %d\n",
+				arch_map2vir(vmp, mem), arch_map2vir(vmp, mem+len),
 				vmp->vm_endpoint);
-			if((s=sys_kill(vmp->vm_endpoint, SIGSEGV)) != OK)
-				vm_panic("sys_kill failed", s);
 		}
 
 		if(sys_vmctl(who, VMCTL_MEMREQ_REPLY, r) != OK)
 			vm_panic("handle_memory: sys_vmctl failed", r);
-
-		if(r != OK) {
-			printf("VM: killing %d\n", vmp->vm_endpoint);
-			if((s=sys_kill(vmp->vm_endpoint, SIGSEGV)) != OK)
-				vm_panic("sys_kill failed", s);
-		}
 	}
 }