From: Christoph Egger <Christoph.Egger@amd.com>
To: xen-devel@lists.xensource.com
Cc: Qing He <qing.he@intel.com>
Subject: Re: [PATCH 16/16] vmx: nest: expose cpuid and CR4.VMXE
Date: Wed, 15 Sep 2010 11:43:28 +0200 [thread overview]
Message-ID: <201009151143.29026.Christoph.Egger@amd.com> (raw)
In-Reply-To: <1283959344-3837-17-git-send-email-qing.he@intel.com>
On Wednesday 08 September 2010 17:22:24 Qing He wrote:
> expose VMX cpuid and allow guest to enable VMX.
>
> Signed-off-by: Qing He <qing.he@intel.com>
> Signed-off-by: Eddie Dong <eddie.dong@intel.com>
>
> ---
>
> diff -r 3f40a1f79cf8 tools/libxc/xc_cpuid_x86.c
> --- a/tools/libxc/xc_cpuid_x86.c Wed Sep 08 19:47:39 2010 +0800
> +++ b/tools/libxc/xc_cpuid_x86.c Wed Sep 08 19:49:06 2010 +0800
> @@ -128,8 +128,17 @@
> const unsigned int *input, unsigned int *regs,
> int is_pae)
> {
> + unsigned long nest;
> +
> switch ( input[0] )
> {
> + case 0x00000001:
> + /* ECX[5] is availability of VMX */
> + xc_get_hvm_param(xch, domid, HVM_PARAM_NESTEDHVM, &nest);
> + if (nest)
> + regs[2] |= 0x20;
> + break;
> +
I merged this part into my tools patch this way:
/* ECX[5] is availability of VMX */
if (is_nstedhvm)
set_bit(X86_FEATURE_VMXE, regs[2]);
break;
> case 0x00000004:
> /*
> * EAX[31:26] is Maximum Cores Per Package (minus one).
> diff -r 3f40a1f79cf8 xen/include/asm-x86/hvm/hvm.h
> --- a/xen/include/asm-x86/hvm/hvm.h Wed Sep 08 19:47:39 2010 +0800
> +++ b/xen/include/asm-x86/hvm/hvm.h Wed Sep 08 19:49:06 2010 +0800
> @@ -295,7 +295,8 @@
> X86_CR4_DE | X86_CR4_PSE | X86_CR4_PAE | \
> X86_CR4_MCE | X86_CR4_PGE | X86_CR4_PCE | \
> X86_CR4_OSFXSR | X86_CR4_OSXMMEXCPT | \
> - (cpu_has_xsave ? X86_CR4_OSXSAVE : 0))))
> + (cpu_has_xsave ? X86_CR4_OSXSAVE : 0) | \
> + X86_CR4_VMXE)))
I changed this to
(cpu_has_vmx ? X86_CR4_VMXE : 0))))
where cpu_has vmx is in <asm/cpufeature.h> defined as
#define cpu_has_vmx boot_cpu_has(X86_FEATURE_VMXE)
Christoph
> /* These exceptions must always be intercepted. */
> #define HVM_TRAP_MASK ((1U << TRAP_machine_check) | (1U <<
> TRAP_invalid_op))
>
--
---to satisfy European Law for business letters:
Advanced Micro Devices GmbH
Einsteinring 24, 85609 Dornach b. Muenchen
Geschaeftsfuehrer: Alberto Bozzo, Andrew Bowd
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632
next prev parent reply other threads:[~2010-09-15 9:43 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-08 15:22 [PATCH 00/16] Nested virtualization for VMX Qing He
2010-09-08 15:22 ` [PATCH 01/16] vmx: nest: rename host_vmcs Qing He
2010-09-10 13:27 ` Christoph Egger
2010-09-08 15:22 ` [PATCH 02/16] vmx: nest: wrapper for control update Qing He
2010-09-10 13:29 ` Christoph Egger
2010-09-08 15:22 ` [PATCH 03/16] vmx: nest: nested availability and status flags Qing He
2010-09-15 11:43 ` Christoph Egger
2010-09-15 14:18 ` Dong, Eddie
2010-09-08 15:22 ` [PATCH 04/16] vmx: nest: nested control structure Qing He
2010-09-09 6:13 ` Dong, Eddie
2010-09-15 11:27 ` Christoph Egger
2010-09-15 13:06 ` Dong, Eddie
2010-09-15 13:17 ` Christoph Egger
2010-09-15 13:31 ` Christoph Egger
2010-09-15 13:46 ` Dong, Eddie
2010-09-15 14:02 ` Christoph Egger
2010-09-08 15:22 ` [PATCH 05/16] vmx: nest: virtual vmcs layout Qing He
2010-09-13 10:29 ` Tim Deegan
2010-09-08 15:22 ` [PATCH 06/16] vmx: nest: handling VMX instruction exits Qing He
2010-09-10 7:05 ` Dong, Eddie
2010-09-13 11:11 ` Tim Deegan
2010-09-13 14:29 ` Dong, Eddie
2010-09-13 14:46 ` Tim Deegan
2010-09-13 11:10 ` Tim Deegan
2010-09-15 4:55 ` Dong, Eddie
2010-09-15 6:40 ` Keir Fraser
2010-09-15 6:49 ` Dong, Eddie
2010-09-15 7:31 ` Keir Fraser
2010-09-15 8:15 ` Christoph Egger
2010-09-15 8:23 ` Keir Fraser
2010-09-15 9:08 ` Dong, Eddie
2010-09-15 11:39 ` Keir Fraser
2010-09-15 12:36 ` Dong, Eddie
2010-09-15 13:12 ` Keir Fraser
2010-09-20 3:13 ` Dong, Eddie
2010-09-20 8:08 ` Keir Fraser
2010-09-20 9:33 ` Dong, Eddie
2010-09-20 9:41 ` Keir Fraser
2010-09-20 13:10 ` Dong, Eddie
2010-09-20 9:41 ` Christoph Egger
2010-09-20 13:14 ` Dong, Eddie
2010-09-15 7:17 ` Qing He
2010-09-15 7:38 ` Keir Fraser
2010-09-15 7:56 ` Dong, Eddie
2010-09-15 8:15 ` Keir Fraser
2010-09-15 9:26 ` Tim Deegan
2010-09-15 9:56 ` Dong, Eddie
2010-09-15 11:46 ` Keir Fraser
2010-09-08 15:22 ` [PATCH 07/16] vmx: nest: switch current vmcs Qing He
2010-09-08 15:22 ` [PATCH 08/16] vmx: nest: vmresume/vmlaunch Qing He
2010-09-15 9:52 ` Christoph Egger
2010-09-15 11:30 ` Christoph Egger
2010-09-20 5:19 ` Dong, Eddie
2010-09-08 15:22 ` [PATCH 09/16] vmx: nest: shadow controls Qing He
2010-09-08 15:22 ` [PATCH 10/16] vmx: nest: L1 <-> L2 context switch Qing He
2010-09-08 15:22 ` [PATCH 11/16] vmx: nest: interrupt handling Qing He
2010-09-08 15:22 ` [PATCH 12/16] vmx: nest: VMExit handler in L2 Qing He
2010-09-08 15:22 ` [PATCH 13/16] vmx: nest: L2 tsc Qing He
2010-09-08 15:22 ` [PATCH 14/16] vmx: nest: CR0.TS and #NM Qing He
2010-09-08 15:22 ` [PATCH 15/16] vmx: nest: capability reporting MSRs Qing He
2010-09-13 12:45 ` Tim Deegan
2010-09-15 10:05 ` Christoph Egger
2010-09-15 14:28 ` Dong, Eddie
2010-09-15 14:45 ` Christoph Egger
2010-09-16 14:10 ` Dong, Eddie
2010-09-08 15:22 ` [PATCH 16/16] vmx: nest: expose cpuid and CR4.VMXE Qing He
2010-09-15 9:43 ` Christoph Egger [this message]
2010-09-13 13:10 ` [PATCH 00/16] Nested virtualization for VMX Tim Deegan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=201009151143.29026.Christoph.Egger@amd.com \
--to=christoph.egger@amd.com \
--cc=qing.he@intel.com \
--cc=xen-devel@lists.xensource.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.