Hi Matt/Borislav, thanks for the discussion. I am sorry that somehow
I did not see this message in my inbox. I found it by surprise through
an internet search.
On Mon, 22 Jun, at 06:11:31AM, Matt Fleming wrote:
Right, but see my previous comment about x86 discarding a bunch of
attributes for m
On Mon, 22 Jun, at 06:11:31AM, Matt Fleming wrote:
>
> Right, but see my previous comment about x86 discarding a bunch of
> attributes for memory regions because the kernel "knows better".
>
> And in most places, yes, the kernel really does know better. But this
> APEI case is special because irr
On Mon, 15 Jun, at 04:59:08PM, Borislav Petkov wrote:
> On Mon, Jun 15, 2015 at 03:15:33PM +0100, Matt Fleming wrote:
> > On Sat, 13 Jun, at 10:27:51AM, Borislav Petkov wrote:
> > > On Fri, Jun 12, 2015 at 04:44:25PM -0700, Zhang, Jonathan Zhixiong wrote:
> > > > Since such function is only needed
On Mon, Jun 15, 2015 at 03:15:33PM +0100, Matt Fleming wrote:
> On Sat, 13 Jun, at 10:27:51AM, Borislav Petkov wrote:
> > On Fri, Jun 12, 2015 at 04:44:25PM -0700, Zhang, Jonathan Zhixiong wrote:
> > > Since such function is only needed for APEI functionality, at least as
> > > of today, I will nam
On Sat, 13 Jun, at 10:27:51AM, Borislav Petkov wrote:
> On Fri, Jun 12, 2015 at 04:44:25PM -0700, Zhang, Jonathan Zhixiong wrote:
> > Since such function is only needed for APEI functionality, at least as
> > of today, I will name it arch_apei_get_mem_attribute().
>
> Why?
>
> It can be extended
On Fri, Jun 12, 2015 at 04:44:25PM -0700, Zhang, Jonathan Zhixiong wrote:
> Since such function is only needed for APEI functionality, at least as
> of today, I will name it arch_apei_get_mem_attribute().
Why?
It can be extended to be used generically too, no? Come to think of it,
the different a
On 6/12/2015 9:29 AM, Borislav Petkov wrote:
On Thu, Jun 11, 2015 at 11:26:00AM -0700, Jonathan (Zhixiong) Zhang wrote:
From: "Jonathan (Zhixiong) Zhang"
With ACPI APEI firmware first handling, generic hardware error
record is updated by firmware in GHES memory region. When firmware
updated
On Thu, Jun 11, 2015 at 11:26:00AM -0700, Jonathan (Zhixiong) Zhang wrote:
> From: "Jonathan (Zhixiong) Zhang"
>
> With ACPI APEI firmware first handling, generic hardware error
> record is updated by firmware in GHES memory region. When firmware
> updated GHES memory region with uncached access
From: "Jonathan (Zhixiong) Zhang"
With ACPI APEI firmware first handling, generic hardware error
record is updated by firmware in GHES memory region. When firmware
updated GHES memory region with uncached access attribute, Linux
reads stale data from cache.
GHES memory region should be mapped wi
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