diff options
| author | Matias Zabaljauregui <zabaljauregui@gmail.com> | 2009-06-13 08:27:07 +0400 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2009-06-12 16:57:07 +0400 |
| commit | cefcad1773197523e11e18b669f245e6a8d32058 (patch) | |
| tree | 2d94e3df551b3ee58c1ac89ed4872e2153496c05 /arch/x86/lguest | |
| parent | ebe0ba84f55950a89cb7af94c7ffc35ee3992f9e (diff) | |
| download | linux-cefcad1773197523e11e18b669f245e6a8d32058.tar.xz | |
lguest: Add support for kvm_hypercall4()
Add support for kvm_hypercall4(); PAE wants it.
Signed-off-by: Matias Zabaljauregui <zabaljauregui at gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'arch/x86/lguest')
| -rw-r--r-- | arch/x86/lguest/boot.c | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c index 943a75ef70b9..d12f554e5f6a 100644 --- a/arch/x86/lguest/boot.c +++ b/arch/x86/lguest/boot.c @@ -87,7 +87,7 @@ struct lguest_data lguest_data = { /*G:037 async_hcall() is pretty simple: I'm quite proud of it really. We have a * ring buffer of stored hypercalls which the Host will run though next time we - * do a normal hypercall. Each entry in the ring has 4 slots for the hypercall + * do a normal hypercall. Each entry in the ring has 5 slots for the hypercall * arguments, and a "hcall_status" word which is 0 if the call is ready to go, * and 255 once the Host has finished with it. * @@ -96,7 +96,8 @@ struct lguest_data lguest_data = { * effect of causing the Host to run all the stored calls in the ring buffer * which empties it for next time! */ static void async_hcall(unsigned long call, unsigned long arg1, - unsigned long arg2, unsigned long arg3) + unsigned long arg2, unsigned long arg3, + unsigned long arg4) { /* Note: This code assumes we're uniprocessor. */ static unsigned int next_call; @@ -108,12 +109,13 @@ static void async_hcall(unsigned long call, unsigned long arg1, local_irq_save(flags); if (lguest_data.hcall_status[next_call] != 0xFF) { /* Table full, so do normal hcall which will flush table. */ - kvm_hypercall3(call, arg1, arg2, arg3); + kvm_hypercall4(call, arg1, arg2, arg3, arg4); } else { lguest_data.hcalls[next_call].arg0 = call; lguest_data.hcalls[next_call].arg1 = arg1; lguest_data.hcalls[next_call].arg2 = arg2; lguest_data.hcalls[next_call].arg3 = arg3; + lguest_data.hcalls[next_call].arg4 = arg4; /* Arguments must all be written before we mark it to go */ wmb(); lguest_data.hcall_status[next_call] = 0; @@ -141,7 +143,7 @@ static void lazy_hcall1(unsigned long call, if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_NONE) kvm_hypercall1(call, arg1); else - async_hcall(call, arg1, 0, 0); + async_hcall(call, arg1, 0, 0, 0); } static void lazy_hcall2(unsigned long call, @@ -151,7 +153,7 @@ static void lazy_hcall2(unsigned long call, if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_NONE) kvm_hypercall2(call, arg1, arg2); else - async_hcall(call, arg1, arg2, 0); + async_hcall(call, arg1, arg2, 0, 0); } static void lazy_hcall3(unsigned long call, @@ -162,7 +164,19 @@ static void lazy_hcall3(unsigned long call, if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_NONE) kvm_hypercall3(call, arg1, arg2, arg3); else - async_hcall(call, arg1, arg2, arg3); + async_hcall(call, arg1, arg2, arg3, 0); +} + +static void lazy_hcall4(unsigned long call, + unsigned long arg1, + unsigned long arg2, + unsigned long arg3, + unsigned long arg4) +{ + if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_NONE) + kvm_hypercall4(call, arg1, arg2, arg3, arg4); + else + async_hcall(call, arg1, arg2, arg3, arg4); } /* When lazy mode is turned off reset the per-cpu lazy mode variable and then |