02 May, 2008
2 commits
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If lg isn't NULL, and cpu_id is sane, &lg->cpus[cpu_id] can't be NULL.
Signed-off-by: Rusty Russell
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NR_CPUS (being a host number) is an arbitrary limit for the Guest.
Using the array size directly (which currently happes to be NR_CPUS)
is more futureproof.Signed-off-by: Rusty Russell
31 Mar, 2008
1 commit
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Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds
28 Mar, 2008
1 commit
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Took some cycles to re-read the Lguest Journey end-to-end, fix some
rot and tighten some phrases.Only comments change. No new jokes, but a couple of recycled old jokes.
Signed-off-by: Rusty Russell
11 Mar, 2008
1 commit
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If req is LHREQ_INITIALIZE, and the guest has been initialized before
(unlikely), it will attempt to access cpu->tsk even though cpu is not yet
initialized.Signed-off-by: Eugene Teo
Signed-off-by: Rusty Russell
30 Jan, 2008
10 commits
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explicitly use ktime.h include
explicitly use hrtimer.h include
explicitly use sched.h includeThis patch adds headers explicitly to lguest sources file,
to avoid depending on them being included somewhere else.Signed-off-by: Glauber de Oliveira Costa
Signed-off-by: Rusty Russell -
in our new model, pages are assigned to a virtual cpu, not to a guest.
We move it to the lg_cpu structure.Signed-off-by: Glauber de Oliveira Costa
Signed-off-by: Rusty Russell -
this patch makes the pending_notify field, used to control
pending notifications, per-vcpu, instead of per-guestSigned-off-by: Glauber de Oliveira Costa
Signed-off-by: Rusty Russell -
lguest uses tasks to control its running behaviour (like sending
breaks, controlling halted state, etc). In a per-vcpu environment,
each vcpu will have its own underlying task. So this patch
makes the infrastructure for that possibleSigned-off-by: Glauber de Oliveira Costa
Signed-off-by: Rusty Russell -
This is the most obvious per-vcpu field: registers.
So this patch moves it from struct lguest to struct vcpu,
and patch the places in which they are used, accordinglySigned-off-by: Glauber de Oliveira Costa
Signed-off-by: Rusty Russell -
This patch adapts interrupt processing for using the vcpu struct.
Signed-off-by: Glauber de Oliveira Costa
Signed-off-by: Rusty Russell -
Here, I introduce per-vcpu timers. With this, we can have
local expiries, needed for accounting time in smp guestsSigned-off-by: Glauber de Oliveira Costa
Signed-off-by: Rusty Russell -
This patch makes the write() file operation smp aware. Which means, receiving
the vcpu_id value through the offset parameter, and being well aware to which
vcpu we're talking to.Signed-off-by: Glauber de Oliveira Costa
Signed-off-by: Rusty Russell -
This patch makes the run_guest() routine use the lg_cpu struct.
This is required since in a smp guest environment, there's no
more the notion of "running the guest", but rather, it is "running the vcpu"Signed-off-by: Glauber de Oliveira Costa
Signed-off-by: Rusty Russell -
this patch initializes the first vcpu in the initialize() routing,
which is responsible for starting the process of putting the guest up.
right now, as much of the fields are still not per-vcpu, it does not
do much.Signed-off-by: Glauber de Oliveira Costa
Signed-off-by: Rusty Russell
15 Nov, 2007
1 commit
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This patch fixes a memory leak spotted by the Coverity checker.
Signed-off-by: Adrian Bunk
Cc: Rusty Russell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
25 Oct, 2007
1 commit
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Went through the documentation doing typo and content fixes. This
patch contains only comment and whitespace changes.Signed-off-by: Rusty Russell
23 Oct, 2007
6 commits
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This patch gets rid of the old lguest host I/O infrastructure and
replaces it with a single hypercall "LHCALL_NOTIFY" which takes an
address.The main change is the removal of io.c: that mainly did inter-guest
I/O, which virtio doesn't yet support.Signed-off-by: Rusty Russell
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1) This allows us to get alot closer to booting bzImages.
2) It means we don't have to know page_offset.
3) The Guest needs to modify the boot pagetables to create the
PAGE_OFFSET mapping before jumping to C code.4) guest_pa() walks the page tables rather than using page_offset.
5) We don't use page_offset to figure out whether to emulate: it was
always kinda quesationable, and won't work for instructions done
before remapping (bzImage unpacking in particular).6) We still want the kernel address for tlb flushing: have the initial
hypercall give us that, too.Signed-off-by: Rusty Russell
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Move setup_regs() to lguest_arch_setup_regs() in i386_core.c given
that this is very architecture specific.Signed-off-by: Jes Sorensen
Signed-off-by: Rusty Russell -
Apply Clue 2x4 to lguest userlandkernel handling code and the
lguest launcher. Pointers are not to be passed in u32's!Basic rule of thumb: Anything passing u32's back and forth should be
passing unsigned longs to be portable to 64 bit archs.For those who forgotten already, I repeat: NO POINTERS IN u32!
Signed-off-by: Jes Sorensen
Signed-off-by: Rusty Russell -
Back when we had all the Guest state in the switcher, we had a fixed
array of them. This is no longer necessary.If we switch the network code to using random_ether_addr (46 bits is
enough to avoid clashes), we can get rid of the concept of "guest id"
altogether.Signed-off-by: Rusty Russell
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In order to avoid problematic special linking of the Launcher, we give
the Host an offset: this means we can use any memory region in the
Launcher as Guest memory rather than insisting on mmap() at 0.The result is quite pleasing: a number of casts are replaced with
simple additions.Signed-off-by: Rusty Russell
27 Jul, 2007
2 commits
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Documentation: The Launcher
Signed-off-by: Rusty Russell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The netfilter code had very good documentation: the Netfilter Hacking HOWTO.
Noone ever read it.So this time I'm trying something different, using a bit of Knuthiness.
Signed-off-by: Rusty Russell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
20 Jul, 2007
1 commit
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This is the code for the "lg.ko" module, which allows lguest guests to
be launched.[akpm@linux-foundation.org: update for futex-new-private-futexes]
[akpm@linux-foundation.org: build fix]
[jmorris@namei.org: lguest: use hrtimers]
[akpm@linux-foundation.org: x86_64 build fix]
Signed-off-by: Rusty Russell
Cc: Andi Kleen
Cc: Eric Dumazet
Cc: Thomas Gleixner
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds