On March 8, 2019 6:43:10 AM EST, Juergen Gross wrote:
>Documentation/x86/boot.txt is missing protocol 2.13 description.
>
>Signed-off-by: Juergen Gross
You forgot Reported-by: Ross Philipson ...
And pls feel free to add Reviewed-by from me as well.
>---
> Documentation/x86/boot.txt | 4
On Sun, Nov 11, 2018 at 10:49:39AM -0800, H. Peter Anvin wrote:
> On 11/10/18 1:03 AM, Juergen Gross wrote:
> >
> > How would that help? The garabge data written could have the correct
> > terminal sentinel value by chance.
> >
> > That's why I re-used an existing field in setup_header (the versi
On Mon, Nov 13, 2017 at 06:05:59PM +0800, Quan Xu wrote:
> From: Yang Zhang
>
> Some latency-intensive workload have seen obviously performance
> drop when running inside VM. The main reason is that the overhead
> is amplified when running inside VM. The most cost I have seen is
> inside idle pat
On Tue, Aug 29, 2017 at 10:02:15PM +0800, Wanpeng Li wrote:
> > Here is the data we get when running benchmark netperf:
> >
> >2. w/ patch:
> > halt_poll_threshold=1 -- 15803.89 bits/s -- 159.5 %CPU
> > halt_poll_threshold=2 -- 15899.04 bits/s -- 161.5 %CPU
> > halt_po
On Tue, Aug 29, 2017 at 11:46:35AM +, Yang Zhang wrote:
> So far, pv_idle_ops.poll is the only ops for pv_idle. .poll is called in
> idle path which will polling for a while before we enter the real idle
> state.
>
> In virtualization, idle path includes several heavy operations
> includes tim
On June 15, 2017 11:33:22 AM EDT, Borislav Petkov wrote:
>On Thu, Jun 15, 2017 at 09:59:45AM -0500, Tom Lendacky wrote:
>> Actually the detection routine, amd_iommu_detect(), is part of the
>> IOMMU_INIT_FINISH macro support which is called early through
>mm_init()
>> from start_kernel() and that
On Thu, Feb 16, 2017 at 09:46:19AM -0600, Tom Lendacky wrote:
> Add warnings to let the user know when bounce buffers are being used for
> DMA when SME is active. Since the bounce buffers are not in encrypted
> memory, these notifications are to allow the user to determine some
> appropriate actio
On Thu, Feb 16, 2017 at 09:47:55AM -0600, Tom Lendacky wrote:
> Provide support so that kexec can be used to boot a kernel when SME is
> enabled.
Is the point of kexec and kdump to ehh, dump memory ? But if the
rest of the memory is encrypted you won't get much, will you?
Would it make sense to i
On Mon, Nov 07, 2016 at 07:57:11PM +0100, Geert Uytterhoeven wrote:
> Hi Konrad,
>
> On Mon, Oct 31, 2016 at 6:52 PM, Konrad Rzeszutek Wilk
> wrote:
> > On Mon, Oct 31, 2016 at 04:45:04PM +0100, Geert Uytterhoeven wrote:
> >> On architectures like arm64, swiotlb is
On Mon, Oct 31, 2016 at 04:45:03PM +0100, Geert Uytterhoeven wrote:
> If the system runs out of SW-IOMMU space, changes are high successive
> requests will fail, too, flooding the kernel log. This is true
> especially for streaming DMA, which is typically used repeatedly outside
> the driver's ini
On Mon, Oct 31, 2016 at 04:45:04PM +0100, Geert Uytterhoeven wrote:
> On architectures like arm64, swiotlb is tied intimately to the core
> architecture DMA support. In addition, ZONE_DMA cannot be disabled.
>
> To aid debugging and catch devices not supporting DMA to memory outside
> the 32-bit a
On Fri, Jun 24, 2016 at 10:57:29AM +0800, Jisheng Zhang wrote:
> Dear Konrad,
>
> On Thu, 23 Jun 2016 12:06:10 -0400 Konrad Rzeszutek Wilk wrote:
>
> > On June 23, 2016 10:30:34 AM EDT, Catalin Marinas
> > wrote:
> > >On Thu, Jun 23, 2016 at 05:43:40PM +0530, M
On June 23, 2016 10:30:34 AM EDT, Catalin Marinas
wrote:
>On Thu, Jun 23, 2016 at 05:43:40PM +0530, Manjeet Pawar wrote:
>> From: Rohit Thapliyal
>>
>> swiotlb default size of 64M is too big as
>> default value therefore it is made configurable
>> through command line through swiotlb_size param
On Mon, May 30, 2016 at 01:54:06PM +0200, Krzysztof Kozlowski wrote:
> The dma-mapping core and the implementations do not change the
> DMA attributes passed by pointer. Thus the pointer can point to const
> data. However the attributes do not have to be a bitfield. Instead
> unsigned long will d
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