On 2018-04-11 15:16, f...@ozog.com wrote: > inmates cannot use X86_FEATURE_VMX from regular cpuid > as vcpu maks the bit explicitely on non-root cells. > > use cpuid leaf 0 to detect AuthenticAMD and change to VMMCALL > > Signed-off-by: Francois-Frederic Ozog <f...@ozog.com> > --- > inmates/lib/x86/hypercall.c | 12 ++++++------ > 1 file changed, 6 insertions(+), 6 deletions(-) > > diff --git a/inmates/lib/x86/hypercall.c b/inmates/lib/x86/hypercall.c > index ac99f0c3..2d7a96e1 100644 > --- a/inmates/lib/x86/hypercall.c > +++ b/inmates/lib/x86/hypercall.c > @@ -40,19 +40,19 @@ > > #define X86_FEATURE_VMX (1 << 5) > > -bool jailhouse_use_vmcall; > +bool jailhouse_use_vmcall = true; > > void hypercall_init(void) > { > - u32 eax = 1, ecx = 0; > + u32 eax = 0, ebx = 0, ecx = 0, edx = 0; > > asm volatile( > "cpuid" > : "=c" (ecx) > - : "a" (eax), "c" (ecx) > - : "rbx", "rdx", "memory" > + : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx) > + : "memory" > ); > > - if (ecx & X86_FEATURE_VMX) > - jailhouse_use_vmcall = true; > + if (ebx == 0x68747541 && ecx == 0x444d4163 && edx == 0x69746E65) > + jailhouse_use_vmcall = false; > } > -- > 2.11.0 >
This patch looks functionally fine now, but your mailer replaces tabs with spaces. Please fix and resend. Jan -- Siemens AG, Corporate Technology, CT RDA IOT SES-DE Corporate Competence Center Embedded Linux -- You received this message because you are subscribed to the Google Groups "Jailhouse" group. To unsubscribe from this group and stop receiving emails from it, send an email to jailhouse-dev+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.