linux-kernel - linux-next: manual merge of the kvm tree with the tip tree

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20180115133902.0abe39af@canb.auug.org.au>
Date:   Mon, 15 Jan 2018 13:39:02 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        KVM <kvm@...r.kernel.org>, Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        David Woodhouse <dwmw@...zon.co.uk>,
        Chao Peng <chao.p.peng@...ux.intel.com>,
        Luwei Kang <luwei.kang@...el.com>
Subject: linux-next: manual merge of the kvm tree with the tip tree

Hi all,

Today's linux-next merge of the kvm tree got a conflict in:

  arch/x86/kvm/vmx.c

between commit:

  117cc7a908c8 ("x86/retpoline: Fill return stack buffer on vmexit")

from the tip tree and commit:

  3e95fd6d0561 ("KVM: x86: Add Intel Processor Trace virtualization mode")

from the kvm tree.

I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

-- 
Cheers,
Stephen Rothwell

diff --cc arch/x86/kvm/vmx.c
index c829d89e2e63,87ac655760e5..000000000000
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@@ -50,7 -50,7 +50,8 @@@
  #include <asm/apic.h>
  #include <asm/irq_remapping.h>
  #include <asm/mmu_context.h>
 +#include <asm/nospec-branch.h>
+ #include <asm/intel_pt.h>
  
  #include "trace.h"
  #include "pmu.h"
@@@ -9491,12 -9721,9 +9731,12 @@@ static void __noclone vmx_vcpu_run(stru
  #endif
  	      );
  
 +	/* Eliminate branch target predictions from guest mode */
 +	vmexit_fill_RSB();
 +
  	/* MSR_IA32_DEBUGCTLMSR is zeroed on vmexit. Restore it if needed */
- 	if (debugctlmsr)
- 		update_debugctlmsr(debugctlmsr);
+ 	if (vmx->host_debugctlmsr)
+ 		update_debugctlmsr(vmx->host_debugctlmsr);
  
  #ifndef CONFIG_X86_64
  	/*