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| author | Glauber de Oliveira Costa <gcosta@redhat.com> | 2008-01-07 11:05:25 -0200 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2008-01-30 22:50:06 +1100 |
| commit | d0953d42c3445a120299fac9ad70e672d77898e9 (patch) | |
| tree | a631abb2c154bec66cec05508423da705d02f35b /drivers/lguest/x86 | |
| parent | 4dcc53da49c2387078fe8ceb7a420d125e027fc6 (diff) | |
| download | linux-d0953d42c3445a120299fac9ad70e672d77898e9.tar.gz linux-d0953d42c3445a120299fac9ad70e672d77898e9.tar.bz2 linux-d0953d42c3445a120299fac9ad70e672d77898e9.zip | |
lguest: per-cpu run guest
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 <gcosta@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/lguest/x86')
| -rw-r--r-- | drivers/lguest/x86/core.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/lguest/x86/core.c b/drivers/lguest/x86/core.c index 96d0fd07c57d..3d2131e169fd 100644 --- a/drivers/lguest/x86/core.c +++ b/drivers/lguest/x86/core.c @@ -73,8 +73,9 @@ static DEFINE_PER_CPU(struct lguest *, last_guest); * since it last ran. We saw this set in interrupts_and_traps.c and * segments.c. */ -static void copy_in_guest_info(struct lguest *lg, struct lguest_pages *pages) +static void copy_in_guest_info(struct lg_cpu *cpu, struct lguest_pages *pages) { + struct lguest *lg = cpu->lg; /* Copying all this data can be quite expensive. We usually run the * same Guest we ran last time (and that Guest hasn't run anywhere else * meanwhile). If that's not the case, we pretend everything in the @@ -113,14 +114,15 @@ static void copy_in_guest_info(struct lguest *lg, struct lguest_pages *pages) } /* Finally: the code to actually call into the Switcher to run the Guest. */ -static void run_guest_once(struct lguest *lg, struct lguest_pages *pages) +static void run_guest_once(struct lg_cpu *cpu, struct lguest_pages *pages) { /* This is a dummy value we need for GCC's sake. */ unsigned int clobber; + struct lguest *lg = cpu->lg; /* Copy the guest-specific information into this CPU's "struct * lguest_pages". */ - copy_in_guest_info(lg, pages); + copy_in_guest_info(cpu, pages); /* Set the trap number to 256 (impossible value). If we fault while * switching to the Guest (bad segment registers or bug), this will @@ -161,8 +163,10 @@ static void run_guest_once(struct lguest *lg, struct lguest_pages *pages) /*H:040 This is the i386-specific code to setup and run the Guest. Interrupts * are disabled: we own the CPU. */ -void lguest_arch_run_guest(struct lguest *lg) +void lguest_arch_run_guest(struct lg_cpu *cpu) { + struct lguest *lg = cpu->lg; + /* Remember the awfully-named TS bit? If the Guest has asked to set it * we set it now, so we can trap and pass that trap to the Guest if it * uses the FPU. */ @@ -180,7 +184,7 @@ void lguest_arch_run_guest(struct lguest *lg) /* Now we actually run the Guest. It will return when something * interesting happens, and we can examine its registers to see what it * was doing. */ - run_guest_once(lg, lguest_pages(raw_smp_processor_id())); + run_guest_once(cpu, lguest_pages(raw_smp_processor_id())); /* Note that the "regs" pointer contains two extra entries which are * not really registers: a trap number which says what interrupt or |