lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Message-ID: <20231219232323.euweerulgsgbodx5@box.shutemov.name> Date: Wed, 20 Dec 2023 02:23:23 +0300 From: kirill.shutemov@...ux.intel.com To: Alexey Makhalov <alexey.makhalov@...adcom.com> Cc: linux-kernel@...r.kernel.org, virtualization@...ts.linux.dev, bp@...en8.de, hpa@...or.com, dave.hansen@...ux.intel.com, mingo@...hat.com, tglx@...utronix.de, x86@...nel.org, netdev@...r.kernel.org, richardcochran@...il.com, linux-input@...r.kernel.org, dmitry.torokhov@...il.com, zackr@...are.com, linux-graphics-maintainer@...are.com, pv-drivers@...are.com, namit@...are.com, timothym@...are.com, akaher@...are.com, jsipek@...are.com, dri-devel@...ts.freedesktop.org, daniel@...ll.ch, airlied@...il.com, tzimmermann@...e.de, mripard@...nel.org, maarten.lankhorst@...ux.intel.com, horms@...nel.org Subject: Re: [PATCH v3 6/6] x86/vmware: Add TDX hypercall support On Tue, Dec 19, 2023 at 01:57:51PM -0800, Alexey Makhalov wrote: > diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c > index 3aa1adaed18f..ef07ab7a07e1 100644 > --- a/arch/x86/kernel/cpu/vmware.c > +++ b/arch/x86/kernel/cpu/vmware.c > @@ -428,6 +428,30 @@ static bool __init vmware_legacy_x2apic_available(void) > (eax & BIT(VCPU_LEGACY_X2APIC)); > } > > +#ifdef CONFIG_INTEL_TDX_GUEST > +unsigned long vmware_tdx_hypercall(unsigned long cmd, > + struct tdx_module_args *args) > +{ > + if (!hypervisor_is_type(X86_HYPER_VMWARE)) > + return 0; > + > + if (cmd & ~VMWARE_CMD_MASK) { > + pr_warn("Out of range command %x\n", cmd); > + return 0; Is zero success? Shouldn't it be an error? > + } > + > + args->r10 = VMWARE_TDX_VENDOR_LEAF; > + args->r11 = VMWARE_TDX_HCALL_FUNC; > + args->r12 = VMWARE_HYPERVISOR_MAGIC; > + args->r13 = cmd; > + > + __tdx_hypercall(args); > + > + return args->r12; > +} > +EXPORT_SYMBOL_GPL(vmware_tdx_hypercall); > +#endif > + > #ifdef CONFIG_AMD_MEM_ENCRYPT > static void vmware_sev_es_hcall_prepare(struct ghcb *ghcb, > struct pt_regs *regs) > -- > 2.39.0 > -- Kiryl Shutsemau / Kirill A. Shutemov
Powered by blists - more mailing lists