All of lore.kernel.org
 help / color / mirror / Atom feed
From: "Nadav Har'El" <nyh@il.ibm.com>
To: kvm@vger.kernel.org
Cc: avi@redhat.com
Subject: [PATCH 12/31] nVMX: Implement VMPTRLD
Date: Wed, 25 May 2011 23:07:29 +0300	[thread overview]
Message-ID: <201105252007.p4PK7TMW011206@rice.haifa.ibm.com> (raw)
In-Reply-To: 1306353651-nyh@il.ibm.com

This patch implements the VMPTRLD instruction.

Signed-off-by: Nadav Har'El <nyh@il.ibm.com>
---
 arch/x86/kvm/vmx.c |   62 ++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 61 insertions(+), 1 deletion(-)

--- .before/arch/x86/kvm/vmx.c	2011-05-25 22:40:57.000000000 +0300
+++ .after/arch/x86/kvm/vmx.c	2011-05-25 22:40:57.000000000 +0300
@@ -4876,6 +4876,66 @@ static int handle_vmclear(struct kvm_vcp
 	return 1;
 }
 
+/* Emulate the VMPTRLD instruction */
+static int handle_vmptrld(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	gva_t gva;
+	gpa_t vmptr;
+	struct x86_exception e;
+
+	if (!nested_vmx_check_permission(vcpu))
+		return 1;
+
+	if (get_vmx_mem_address(vcpu, vmcs_readl(EXIT_QUALIFICATION),
+			vmcs_read32(VMX_INSTRUCTION_INFO), &gva))
+		return 1;
+
+	if (kvm_read_guest_virt(&vcpu->arch.emulate_ctxt, gva, &vmptr,
+				sizeof(vmptr), &e)) {
+		kvm_inject_page_fault(vcpu, &e);
+		return 1;
+	}
+
+	if (!IS_ALIGNED(vmptr, PAGE_SIZE)) {
+		nested_vmx_failValid(vcpu, VMXERR_VMPTRLD_INVALID_ADDRESS);
+		skip_emulated_instruction(vcpu);
+		return 1;
+	}
+
+	if (vmx->nested.current_vmptr != vmptr) {
+		struct vmcs12 *new_vmcs12;
+		struct page *page;
+		page = nested_get_page(vcpu, vmptr);
+		if (page == NULL) {
+			nested_vmx_failInvalid(vcpu);
+			skip_emulated_instruction(vcpu);
+			return 1;
+		}
+		new_vmcs12 = kmap(page);
+		if (new_vmcs12->revision_id != VMCS12_REVISION) {
+			kunmap(page);
+			nested_release_page_clean(page);
+			nested_vmx_failValid(vcpu,
+				VMXERR_VMPTRLD_INCORRECT_VMCS_REVISION_ID);
+			skip_emulated_instruction(vcpu);
+			return 1;
+		}
+		if (vmx->nested.current_vmptr != -1ull) {
+			kunmap(vmx->nested.current_vmcs12_page);
+			nested_release_page(vmx->nested.current_vmcs12_page);
+		}
+
+		vmx->nested.current_vmptr = vmptr;
+		vmx->nested.current_vmcs12 = new_vmcs12;
+		vmx->nested.current_vmcs12_page = page;
+	}
+
+	nested_vmx_succeed(vcpu);
+	skip_emulated_instruction(vcpu);
+	return 1;
+}
+
 /*
  * The exit handlers return 1 if the exit was handled fully and guest execution
  * may resume.  Otherwise they set the kvm_run parameter to indicate what needs
@@ -4899,7 +4959,7 @@ static int (*kvm_vmx_exit_handlers[])(st
 	[EXIT_REASON_VMCALL]                  = handle_vmcall,
 	[EXIT_REASON_VMCLEAR]	              = handle_vmclear,
 	[EXIT_REASON_VMLAUNCH]                = handle_vmx_insn,
-	[EXIT_REASON_VMPTRLD]                 = handle_vmx_insn,
+	[EXIT_REASON_VMPTRLD]                 = handle_vmptrld,
 	[EXIT_REASON_VMPTRST]                 = handle_vmx_insn,
 	[EXIT_REASON_VMREAD]                  = handle_vmx_insn,
 	[EXIT_REASON_VMRESUME]                = handle_vmx_insn,

  parent reply	other threads:[~2011-05-25 20:07 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-25 20:01 [PATCH 0/31] nVMX: Nested VMX, v11 Nadav Har'El
2011-05-25 20:01 ` [PATCH 01/31] nVMX: Keep list of loaded VMCSs, instead of vcpus Nadav Har'El
2011-05-25 20:02 ` [PATCH 02/31] nVMX: Add "nested" module option to kvm_intel Nadav Har'El
2011-05-25 20:02 ` [PATCH 03/31] nVMX: Implement VMXON and VMXOFF Nadav Har'El
2011-05-25 20:03 ` [PATCH 04/31] nVMX: Allow setting the VMXE bit in CR4 Nadav Har'El
2011-05-25 20:03 ` [PATCH 05/31] nVMX: Introduce vmcs12: a VMCS structure for L1 Nadav Har'El
2011-05-25 20:04 ` [PATCH 06/31] nVMX: Implement reading and writing of VMX MSRs Nadav Har'El
2011-05-25 20:04 ` [PATCH 07/31] nVMX: Decoding memory operands of VMX instructions Nadav Har'El
2011-05-25 20:05 ` [PATCH 08/31] nVMX: Introduce vmcs02: VMCS used to run L2 Nadav Har'El
2011-05-25 20:05 ` [PATCH 09/31] nVMX: Add VMCS fields to the vmcs12 Nadav Har'El
2011-05-25 20:06 ` [PATCH 10/31] nVMX: Success/failure of VMX instructions Nadav Har'El
2011-05-25 20:06 ` [PATCH 11/31] nVMX: Implement VMCLEAR Nadav Har'El
2011-05-25 20:07 ` Nadav Har'El [this message]
2011-05-25 20:08 ` [PATCH 13/31] nVMX: Implement VMPTRST Nadav Har'El
2011-05-25 20:08 ` [PATCH 14/31] nVMX: Implement VMREAD and VMWRITE Nadav Har'El
2011-05-25 20:09 ` [PATCH 15/31] nVMX: Move host-state field setup to a function Nadav Har'El
2011-05-25 20:09 ` [PATCH 16/31] nVMX: Move control field setup to functions Nadav Har'El
2011-05-25 20:10 ` [PATCH 17/31] nVMX: Prepare vmcs02 from vmcs01 and vmcs12 Nadav Har'El
2011-05-25 20:10 ` [PATCH 18/31] nVMX: Implement VMLAUNCH and VMRESUME Nadav Har'El
2011-05-25 20:11 ` [PATCH 19/31] nVMX: No need for handle_vmx_insn function any more Nadav Har'El
2011-05-25 20:11 ` [PATCH 20/31] nVMX: Exiting from L2 to L1 Nadav Har'El
2011-05-25 20:12 ` [PATCH 21/31] nVMX: vmcs12 checks on nested entry Nadav Har'El
2011-05-25 20:12 ` [PATCH 22/31] nVMX: Deciding if L0 or L1 should handle an L2 exit Nadav Har'El
2011-05-25 20:13 ` [PATCH 23/31] nVMX: Correct handling of interrupt injection Nadav Har'El
2011-05-25 20:13 ` [PATCH 24/31] nVMX: Correct handling of exception injection Nadav Har'El
2011-05-25 20:14 ` [PATCH 25/31] nVMX: Correct handling of idt vectoring info Nadav Har'El
2011-05-25 20:14 ` [PATCH 26/31] nVMX: Handling of CR0 and CR4 modifying instructions Nadav Har'El
2011-05-25 20:15 ` [PATCH 27/31] nVMX: Further fixes for lazy FPU loading Nadav Har'El
2011-05-25 20:15 ` [PATCH 28/31] nVMX: Additional TSC-offset handling Nadav Har'El
2011-05-25 20:16 ` [PATCH 29/31] nVMX: Add VMX to list of supported cpuid features Nadav Har'El
2011-05-25 20:16 ` [PATCH 30/31] nVMX: Miscellenous small corrections Nadav Har'El
2011-05-25 20:17 ` [PATCH 31/31] nVMX: Documentation Nadav Har'El
2011-06-01 10:45   ` Jan Kiszka
2011-06-02  8:15     ` Nadav Har'El
2011-06-06  8:36       ` Avi Kivity
2011-05-26  1:30 ` [PATCH 0/31] nVMX: Nested VMX, v11 Tian, Kevin
2011-05-31 18:04 ` Marcelo Tosatti
  -- strict thread matches above, loose matches on Subject: below --
2011-05-16 19:43 [PATCH 0/31] nVMX: Nested VMX, v10 Nadav Har'El
2011-05-16 19:50 ` [PATCH 12/31] nVMX: Implement VMPTRLD Nadav Har'El

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=201105252007.p4PK7TMW011206@rice.haifa.ibm.com \
    --to=nyh@il.ibm.com \
    --cc=avi@redhat.com \
    --cc=kvm@vger.kernel.org \
    /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.