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lguest: Add support for kvm_hypercall4()

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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>
This commit is contained in:
Matias Zabaljauregui
2009-06-12 22:27:07 -06:00
committed by Rusty Russell
parent ebe0ba84f5
commit cefcad1773
2 changed files with 25 additions and 10 deletions
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9
arch/x86/include/asm/lguest_hcall.h
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@@ -35,8 +35,8 @@
*
* We use the KVM hypercall mechanism. Eighteen hypercalls are
* available: the hypercall number is put in the %eax register, and the
* arguments (when required) are placed in %ebx, %ecx and %edx. If a return
* value makes sense, it's returned in %eax.
* arguments (when required) are placed in %ebx, %ecx, %edx and %esi.
* If a return value makes sense, it's returned in %eax.
*
* Grossly invalid calls result in Sudden Death at the hands of the vengeful
* Host, rather than returning failure. This reflects Winston Churchill's
@@ -48,8 +48,9 @@
#define LHCALL_RING_SIZE 64
struct hcall_args {
/* These map directly onto eax, ebx, ecx, edx in struct lguest_regs */
unsigned long arg0, arg1, arg2, arg3;
/* These map directly onto eax, ebx, ecx, edx and esi
* in struct lguest_regs */
unsigned long arg0, arg1, arg2, arg3, arg4;
};
#endif /* !__ASSEMBLY__ */