Revert accidentally applied changes from changeset

7783:5aad7e145e501fbfb346954950a33b042a963633.

Signed-off-by: Keir Fraser <keir@xensource.com>

linux-2.6-xen-sparse/drivers/xen/console/xencons_ring.c

@@ -30,12 +30,6 @@ static inline struct xencons_interface *xencons_interface(void)
 	return mfn_to_virt(xen_start_info->console_mfn);
 }
 
-static inline void notify_daemon(void)
-{
-	/* Use evtchn: this is called early, before irq is set up. */
-	notify_remote_via_evtchn(xen_start_info->console_evtchn);
-}
-
 int xencons_ring_send(const char *data, unsigned len)
 {
 	int sent = 0;
@@ -53,7 +47,8 @@ int xencons_ring_send(const char *data, unsigned len)
 	wmb();
 	intf->out_prod = prod;
 
-	notify_daemon();
+	/* Use evtchn: this is called early, before irq is set up. */
+	notify_remote_via_evtchn(xen_start_info->console_evtchn);
 
 	return sent;
 }	
@@ -75,11 +70,9 @@ static irqreturn_t handle_input(int irq, void *unused, struct pt_regs *regs)
 				1, regs);
 	}
 
-	mb();
+	wmb();
 	intf->in_cons = cons;
 
-	notify_daemon();
-
 	return IRQ_HANDLED;
 }
 
@@ -109,9 +102,6 @@ int xencons_ring_init(void)
 
 	xencons_irq = err;
 
-	/* In case we have in-flight data after save/restore... */
-	notify_daemon();
-
 	return 0;
 }
 

linux-2.6-xen-sparse/drivers/xen/xenbus/xenbus_comms.c

@@ -36,7 +36,7 @@
 #include <asm-xen/xenbus.h>
 #include "xenbus_comms.h"
 
-static int xenbus_irq;
+static int xenbus_irq      = 0;
 
 extern void xenbus_probe(void *); 
 extern int xenstored_ready; 
@@ -51,7 +51,7 @@ static inline struct xenstore_domain_interface *xenstore_domain_interface(void)
 
 static irqreturn_t wake_waiting(int irq, void *unused, struct pt_regs *regs)
 {
-	if (unlikely(xenstored_ready == 0)) {
+	if(unlikely(xenstored_ready == 0)) {
 		xenstored_ready = 1; 
 		schedule_work(&probe_work); 
 	} 
@@ -189,6 +189,9 @@ int xb_init_comms(void)
 
 	xenbus_irq = err;
 
+	/* FIXME zero out page -- domain builder should probably do this*/
+	memset(mfn_to_virt(xen_start_info->store_mfn), 0, PAGE_SIZE);
+
 	return 0;
 }
 

tools/libxc/xc_linux_build.c

@@ -619,9 +619,7 @@ static int setup_guest(int xc_handle,
 
     *store_mfn = page_array[(vstoreinfo_start-dsi.v_start) >> PAGE_SHIFT];
     *console_mfn = page_array[(vconsole_start-dsi.v_start) >> PAGE_SHIFT];
-    if ( xc_clear_domain_page(xc_handle, dom, *store_mfn) ||
-         xc_clear_domain_page(xc_handle, dom, *console_mfn) )
-        goto error_out;
+
 
     start_info = xc_map_foreign_range(
         xc_handle, dom, PAGE_SIZE, PROT_READ|PROT_WRITE,

tools/libxc/xc_linux_restore.c

@@ -12,6 +12,8 @@
 #include "xg_private.h"
 #include "xg_save_restore.h"
 
+
+
 /* max mfn of the whole machine */
 static uint32_t max_mfn; 
 

tools/libxc/xc_private.c

@@ -336,19 +336,6 @@ int xc_copy_to_domain_page(int xc_handle,
     return 0;
 }
 
-int xc_clear_domain_page(int xc_handle,
-                         uint32_t domid,
-                         unsigned long dst_pfn)
-{
-    void *vaddr = xc_map_foreign_range(
-        xc_handle, domid, PAGE_SIZE, PROT_WRITE, dst_pfn);
-    if ( vaddr == NULL )
-        return -1;
-    memset(vaddr, 0, PAGE_SIZE);
-    munmap(vaddr, PAGE_SIZE);
-    return 0;
-}
-
 unsigned long xc_get_filesz(int fd)
 {
     uint16_t sig;

tools/libxc/xc_vmx_build.c

@@ -495,9 +495,6 @@ static int setup_guest(int xc_handle,
     }
 
     *store_mfn = page_array[(v_end-2) >> PAGE_SHIFT];
-    if ( xc_clear_domain_page(xc_handle, dom, *store_mfn) )
-        goto error_out;
-
     shared_page_frame = (v_end - PAGE_SIZE) >> PAGE_SHIFT;
 
     if ((e820_page = xc_map_foreign_range(

tools/libxc/xenctrl.h

@@ -424,9 +424,6 @@ int xc_ia64_get_pfn_list(int xc_handle, uint32_t domid,
 int xc_copy_to_domain_page(int xc_handle, uint32_t domid,
 			   unsigned long dst_pfn, void *src_page);
 
-int xc_clear_domain_page(int xc_handle, uint32_t domid,
-                         unsigned long dst_pfn);
-
 int xc_ia64_copy_to_domain_pages(int xc_handle, uint32_t domid,
         void* src_page, unsigned long dst_pfn, int nr_pages);