On Tue, Mar 21, 2017 at 02:10:20PM +0100, Juergen Gross wrote:
> This patch series is the first part for adding support of large EFI
> memory maps (> the current limit of 128 entries) while reducing
> trampoline size.
>
> I'm not posting the final patch for making the trampoline size
> reduction e
Hey everyone,
Recently, I've been working with Boris Ostrovsky to get Xen running on
some of our larger systems, and we've run into a few problems with the
amount of space that Xen sets aside for the E820 map.
The first problem that I hit was that E820MAX is far too small, at 128
entries, for the
where the XENMEM_machine_memory_map hypercall can
produce an e820 map larger than 128 entries, even on systems where the
original e820 table was quite a bit smaller than that, depending on how
many IOAPICs are installed on the system.
Signed-off-by: Alex Thorlton
Suggested-by: Ingo Molnar
Cc: Rus
tions/comments!
Alex Thorlton (2):
x86: Make E820_X_MAX unconditionally larger than E820MAX
xen/x86: Increase xen_e820_map to E820_X_MAX possible entries
arch/x86/include/asm/e820.h | 12
arch/x86/xen/setup.c| 6 +++---
2 files changed, 11 insertions(+), 7 dele
callback.
Signed-off-by: Alex Thorlton
Suggested-by: Boris Ostrovsky
Reviewed-by: Juergen Gross
Cc: Russ Anderson
Cc: David Vrabel
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: "H. Peter Anvin"
Cc: Denys Vlasenko
Cc: Boris Ostrovsky
Cc: x...@kernel.org
Cc: xen-de...@lists.xenproject.org
On Wed, Nov 30, 2016 at 07:21:48AM +0100, Ingo Molnar wrote:
>
> * Alex Thorlton wrote:
>
> > It's really not necessary to limit E820_X_MAX to 128 in the non-EFI
> > case. This commit drops E820_X_MAX's dependency on CONFIG_EFI, so that
> > E820_X_MAX is
callback.
Signed-off-by: Alex Thorlton
Suggested-by: Boris Ostrovsky
Cc: Russ Anderson
Cc: David Vrabel
Cc: Ingo Molnar
Cc: Juergen Gross
Cc: Thomas Gleixner
Cc: "H. Peter Anvin"
Cc: Denys Vlasenko
Cc: Boris Ostrovsky
Cc: x...@kernel.org
Cc: xen-de...@lists.xenproject.org
---
ar
where the XENMEM_machine_memory_map hypercall can
produce an e820 map larger than 128 entries, even on systems where the
original e820 table was quite a bit smaller than that, depending on how
many IOAPICs are installed on the system.
Signed-off-by: Alex Thorlton
Suggested-by: Ingo Molnar
Cc: Rus
ciate any input that others can give!
- Alex
Alex Thorlton (2):
x86: Make E820_X_MAX unconditionally larger than E820MAX
xen/x86: Increase xen_e820_map to E820_X_MAX possible entries
arch/x86/include/asm/e820.h | 8 +++-
arch/x86/xen/setup.c| 6 +++---
2 files changed, 6 insert
On Thu, Nov 17, 2016 at 10:01:15AM -0500, Boris Ostrovsky wrote:
> On 11/16/2016 05:08 AM, Jan Beulich wrote:
> On 15.11.16 at 21:51, wrote:
> >> On 11/15/2016 03:44 PM, Andrew Cooper wrote:
> >>> On 15/11/2016 20:39, Boris Ostrovsky wrote:
> On 11/15/2016 02:45 PM, Andrew Cooper wrote:
On Wed, Nov 16, 2016 at 07:09:01AM +0100, Juergen Gross wrote:
> On 15/11/16 01:11, Alex Thorlton wrote:
> > On systems with sufficiently large e820 tables, and several IOAPICs, it
> > is possible for the XENMEM_machine_memory_map callback (and its
> > counterpart, XENMEM_memo
On Tue, Nov 15, 2016 at 07:30:35AM +0100, Ingo Molnar wrote:
>
> * Alex Thorlton wrote:
>
> > On systems with sufficiently large e820 tables, and several IOAPICs, it
> > is possible for the XENMEM_machine_memory_map callback (and its
> > counterpart, XENMEM_memory_m
On Wed, Nov 16, 2016 at 05:42:11PM +0100, Juergen Gross wrote:
> On 15/11/16 08:15, Jan Beulich wrote:
> >>>> On 15.11.16 at 07:33, wrote:
> >> On 15/11/16 01:11, Alex Thorlton wrote:
> >>> Hey everyone,
> >>>
> >>> We're having
On Tue, Nov 15, 2016 at 10:55:49AM +0100, Juergen Gross wrote:
> I'd go with the new error code. What about E2BIG or ENOSPC?
>
> I think the hypervisor should fill in the number of entries required
> in this case.
>
> In case nobody objects I can post patches for this purpose (both Xen
> and Linu
That being said, there isn't exactly a "more
appropriate" macro/variable to use, so this may not really be an issue.
Any input on the patch, or the questions I've raised above is greatly
appreciated!
- Alex
Alex Thorlton (1):
xen/x86: Increase xen_e820_map to E820_X_MAX poss
callback.
Signed-off-by: Alex Thorlton
Suggested-by: Boris Ostrovsky
Cc: Russ Anderson
Cc: David Vrabel
Cc: Juergen Gross
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc: x...@kernel.org
Cc: xen-de...@lists.xenproject.org
---
arch/x86/xen/setup.c | 6 +++---
1 file
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