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lguest: update comments

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Also removes a long-unused #define and an extraneous semicolon.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2011-07-22 14:39:50 +09:30
parent 3c3ed482dc
commit 9f54288def
9 changed files with 50 additions and 39 deletions
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21
arch/x86/lguest/boot.c
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@@ -71,7 +71,8 @@
#include <asm/stackprotector.h>
#include <asm/reboot.h> /* for struct machine_ops */
/*G:010 Welcome to the Guest!
/*G:010
* Welcome to the Guest!
*
* The Guest in our tale is a simple creature: identical to the Host but
* behaving in simplified but equivalent ways. In particular, the Guest is the
@@ -190,15 +191,23 @@ static void lazy_hcall4(unsigned long call,
#endif
/*G:036
* When lazy mode is turned off reset the per-cpu lazy mode variable and then
* issue the do-nothing hypercall to flush any stored calls.
:*/
* When lazy mode is turned off, we issue the do-nothing hypercall to
* flush any stored calls, and call the generic helper to reset the
* per-cpu lazy mode variable.
*/
static void lguest_leave_lazy_mmu_mode(void)
{
hcall(LHCALL_FLUSH_ASYNC, 0, 0, 0, 0);
paravirt_leave_lazy_mmu();
}
/*
* We also catch the end of context switch; we enter lazy mode for much of
* that too, so again we need to flush here.
*
* (Technically, this is lazy CPU mode, and normally we're in lazy MMU
* mode, but unlike Xen, lguest doesn't care about the difference).
*/
static void lguest_end_context_switch(struct task_struct *next)
{
hcall(LHCALL_FLUSH_ASYNC, 0, 0, 0, 0);
@@ -640,7 +649,7 @@ static void lguest_write_cr4(unsigned long val)
/*
* The Guest calls this after it has set a second-level entry (pte), ie. to map
* a page into a process' address space. Wetell the Host the toplevel and
* a page into a process' address space. We tell the Host the toplevel and
* address this corresponds to. The Guest uses one pagetable per process, so
* we need to tell the Host which one we're changing (mm->pgd).
*/
@@ -1139,7 +1148,7 @@ static struct notifier_block paniced = {
static __init char *lguest_memory_setup(void)
{
/*
*The Linux bootloader header contains an "e820" memory map: the
* The Linux bootloader header contains an "e820" memory map: the
* Launcher populated the first entry with our memory limit.
*/
e820_add_region(boot_params.e820_map[0].addr,