On Wed, Oct 30, 2013 at 10:48:13AM +0200, Gleb Natapov wrote:
> On Tue, Oct 29, 2013 at 07:21:59PM -0200, Marcelo Tosatti wrote:
> > > > Could add a warning to memory API: if memory region is larger than 1GB
> > > > and RAM is 1GB backed, and not properly aligned, warn.
> > > Perhaps it would be be
Il 30/10/2013 12:07, Gerd Hoffmann ha scritto:
> On Fr, 2013-10-25 at 23:53 +0100, Paolo Bonzini wrote:
>> Il 25/10/2013 20:50, Marcelo Tosatti ha scritto:
>>> On Fri, Oct 25, 2013 at 09:52:34AM +0100, Paolo Bonzini wrote:
Because offsets are zero, and lengths match the RAM block lengths, you
On Fr, 2013-10-25 at 23:53 +0100, Paolo Bonzini wrote:
> Il 25/10/2013 20:50, Marcelo Tosatti ha scritto:
> > On Fri, Oct 25, 2013 at 09:52:34AM +0100, Paolo Bonzini wrote:
> >> Because offsets are zero, and lengths match the RAM block lengths, you
> >> do not need any complication with aliasing.
On Tue, Oct 29, 2013 at 07:21:59PM -0200, Marcelo Tosatti wrote:
> > > Could add a warning to memory API: if memory region is larger than 1GB
> > > and RAM is 1GB backed, and not properly aligned, warn.
> > Perhaps it would be better do abort and ask user to fix configuration,
> > and on hugepage a
On Tue, Oct 29, 2013 at 07:00:54PM +0100, Igor Mammedov wrote:
> On Mon, 28 Oct 2013 12:04:06 -0200
> Marcelo Tosatti wrote:
>
> > On Sun, Oct 27, 2013 at 04:20:44PM +0100, igor Mammedov wrote:
> > > > Yes, thought of that, unfortunately its cumbersome to add an interface
> > > > for the user to
On Mon, 28 Oct 2013 12:04:06 -0200
Marcelo Tosatti wrote:
> On Sun, Oct 27, 2013 at 04:20:44PM +0100, igor Mammedov wrote:
> > > Yes, thought of that, unfortunately its cumbersome to add an interface
> > > for the user to supply both 2MB and 1GB hugetlbfs pages.
> > Could 2Mb tails be automated,
On Mon, Oct 28, 2013 at 12:04:06PM -0200, Marcelo Tosatti wrote:
> On Sun, Oct 27, 2013 at 04:20:44PM +0100, igor Mammedov wrote:
> > > Yes, thought of that, unfortunately its cumbersome to add an interface
> > > for the user to supply both 2MB and 1GB hugetlbfs pages.
> > Could 2Mb tails be automa
On Sun, Oct 27, 2013 at 04:20:44PM +0100, igor Mammedov wrote:
> > Yes, thought of that, unfortunately its cumbersome to add an interface
> > for the user to supply both 2MB and 1GB hugetlbfs pages.
> Could 2Mb tails be automated, meaning if host uses 1Gb hugepages and
> there is/are tail/s, QEMU s
On Fri, 25 Oct 2013 11:34:22 -0200
Marcelo Tosatti wrote:
> On Fri, Oct 25, 2013 at 11:57:18AM +0200, igor Mammedov wrote:
> > On Fri, 25 Oct 2013 02:58:05 -0200
> > Marcelo Tosatti wrote:
> >
> > > On Fri, Oct 25, 2013 at 12:55:36AM +0100, Paolo Bonzini wrote:
> > > > > +if (hpagesize
Il 25/10/2013 20:50, Marcelo Tosatti ha scritto:
> On Fri, Oct 25, 2013 at 09:52:34AM +0100, Paolo Bonzini wrote:
>> Because offsets are zero, and lengths match the RAM block lengths, you
>> do not need any complication with aliasing. This still has to be done
>> only for new machine types.
>
> N
On Fri, Oct 25, 2013 at 09:52:34AM +0100, Paolo Bonzini wrote:
> Because offsets are zero, and lengths match the RAM block lengths, you
> do not need any complication with aliasing. This still has to be done
> only for new machine types.
Not possible because you just wasted holesize bytes (if num
On Fri, Oct 25, 2013 at 11:57:18AM +0200, igor Mammedov wrote:
> On Fri, 25 Oct 2013 02:58:05 -0200
> Marcelo Tosatti wrote:
>
> > On Fri, Oct 25, 2013 at 12:55:36AM +0100, Paolo Bonzini wrote:
> > > > +if (hpagesize == (1<<30)) {
> > > > +unsigned long holesize = 0x1U
On Fri, 25 Oct 2013 02:58:05 -0200
Marcelo Tosatti wrote:
> On Fri, Oct 25, 2013 at 12:55:36AM +0100, Paolo Bonzini wrote:
> > > +if (hpagesize == (1<<30)) {
> > > +unsigned long holesize = 0x1ULL -
> > > below_4g_mem_size; +
> > > +memory_region_init_alias
Il 25/10/2013 05:58, Marcelo Tosatti ha scritto:
> On Fri, Oct 25, 2013 at 12:55:36AM +0100, Paolo Bonzini wrote:
>>> +if (hpagesize == (1<<30)) {
>>> +unsigned long holesize = 0x1ULL - below_4g_mem_size;
>>> +
>>> +memory_region_init_alias(ram_above_4g, NULL
On Thu, Oct 24, 2013 at 10:55:54PM +0100, Peter Maydell wrote:
> On 24 October 2013 22:12, Marcelo Tosatti wrote:
> > Align guest physical address and host physical address
> > beyond guest 4GB on a 1GB boundary, in case hugetlbfs is used.
> >
> > Otherwise 1GB TLBs cannot be cached for the range.
On Fri, Oct 25, 2013 at 12:55:36AM +0100, Paolo Bonzini wrote:
> > +if (hpagesize == (1<<30)) {
> > +unsigned long holesize = 0x1ULL - below_4g_mem_size;
> > +
> > +memory_region_init_alias(ram_above_4g, NULL, "ram-above-4g",
> > ram,
> > +
Il 24/10/2013 22:12, Marcelo Tosatti ha scritto:
> Align guest physical address and host physical address
> beyond guest 4GB on a 1GB boundary, in case hugetlbfs is used.
>
> Otherwise 1GB TLBs cannot be cached for the range.
>
> Signed-off-by: Marcelo Tosatti
>
> Index: qemu/hw/i386/pc.c
> ===
On 24 October 2013 22:12, Marcelo Tosatti wrote:
> Align guest physical address and host physical address
> beyond guest 4GB on a 1GB boundary, in case hugetlbfs is used.
>
> Otherwise 1GB TLBs cannot be cached for the range.
> +if (hpagesize == (1<<30)) {
> +unsigned long hol
Align guest physical address and host physical address
beyond guest 4GB on a 1GB boundary, in case hugetlbfs is used.
Otherwise 1GB TLBs cannot be cached for the range.
Signed-off-by: Marcelo Tosatti
Index: qemu/hw/i386/pc.c
===
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