Re: [PATCH v6 31/76] x86/head/64: Setup MSR_GS_BASE before calling into C code

2020-08-28 Thread Borislav Petkov
On Mon, Aug 24, 2020 at 10:54:26AM +0200, Joerg Roedel wrote: > diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S > index 2b2e91627221..800053219054 100644 > --- a/arch/x86/kernel/head_64.S > +++ b/arch/x86/kernel/head_64.S > @@ -78,6 +78,14 @@ SYM_CODE_START_NOALIGN(startup_64) >

Re: [PATCH v6 29/76] x86/idt: Split idt_data setup out of set_intr_gate()

2020-08-28 Thread Borislav Petkov
On Mon, Aug 24, 2020 at 10:54:24AM +0200, Joerg Roedel wrote: > From: Joerg Roedel > > The code to setup idt_data is needed for early exception handling, but > set_intr_gate() can't be used that early because it has pv-ops in its > code path, which don't work that early. > > Split out the

Re: [PATCH v6 27/76] x86/sev-es: Add CPUID handling to #VC handler

2020-08-28 Thread Joerg Roedel
On Thu, Aug 27, 2020 at 06:48:10PM -0400, Arvind Sankar wrote: > On Mon, Aug 24, 2020 at 10:54:22AM +0200, Joerg Roedel wrote: > > From: Tom Lendacky > > > > Handle #VC exceptions caused by CPUID instructions. These happen in > > early boot code when the KASLR code checks for RDTSC. > > > >

Re: [PATCH v6 13/76] x86/boot/compressed/64: Add IDT Infrastructure

2020-08-28 Thread Joerg Roedel
Hi Arvind, On Thu, Aug 27, 2020 at 11:26:57AM -0400, Arvind Sankar wrote: > On Mon, Aug 24, 2020 at 10:54:08AM +0200, Joerg Roedel wrote: > > + pushq %rsi > > + callload_stage1_idt > > + popq%rsi > > + > > Do we need the functions later in the series or could this just use lidt >

Re: [PATCH v6 02/76] KVM: SVM: Add GHCB definitions

2020-08-28 Thread Joerg Roedel
On Thu, Aug 27, 2020 at 12:01:13PM -0400, Arvind Sankar wrote: > Wouldn't we rather just remove the checks? I think that's a different topic to be discussed with the KVM maintainers. For now I will add defines for the magic numbers. Regards, Joerg

Re: [PATCH 1/2] drm/virtio: fix unblank

2020-08-28 Thread Gerd Hoffmann
On Mon, Aug 24, 2020 at 09:24:40AM +0200, Jiri Slaby wrote: > On 18. 08. 20, 9:25, Gerd Hoffmann wrote: > > When going through a disable/enable cycle without changing the > > framebuffer the optimization added by commit 3954ff10e06e ("drm/virtio: > > skip set_scanout if framebuffer didn't change")

Re: [RFC PATCH 00/22] Enhance VHOST to enable SoC-to-SoC communication

2020-08-28 Thread Cornelia Huck
On Thu, 9 Jul 2020 14:26:53 +0800 Jason Wang wrote: [Let me note right at the beginning that I first noted this while listening to Kishon's talk at LPC on Wednesday. I might be very confused about the background here, so let me apologize beforehand for any confusion I might spread.] > On