Re: [PATCH] ARC: Use max_high_pfn as a HIGHMEM zone border

2021-04-26 Thread Vineet Gupta
On 4/26/21 9:15 AM, Mike Rapoport wrote: > On Mon, Apr 26, 2021 at 11:55:00AM +, Vladimir Isaev wrote: >> Hi Mike, >> >> On Mon, April 26, 2021 2:29 PM, Mike Rapoport wrote: >>> On Mon, Apr 26, 2021 at 01:10:04PM +0300, Vladimir Isaev wrote: - max_zone_pfn[ZONE_HIGHMEM] = min_low_pfn; >>>

Re: [PATCH] ARC: Use max_high_pfn as a HIGHMEM zone border

2021-04-26 Thread Mike Rapoport
On Mon, Apr 26, 2021 at 11:55:00AM +, Vladimir Isaev wrote: > Hi Mike, > > On Mon, April 26, 2021 2:29 PM, Mike Rapoport wrote: > > On Mon, Apr 26, 2021 at 01:10:04PM +0300, Vladimir Isaev wrote: > > > - max_zone_pfn[ZONE_HIGHMEM] = min_low_pfn; > > > + max_zone_pfn[ZONE_HIGHMEM] = max_high_pf

RE: [PATCH] ARC: Use max_high_pfn as a HIGHMEM zone border

2021-04-26 Thread Vladimir Isaev
Hi Mike, On Mon, April 26, 2021 2:29 PM, Mike Rapoport wrote: > On Mon, Apr 26, 2021 at 01:10:04PM +0300, Vladimir Isaev wrote: > > - max_zone_pfn[ZONE_HIGHMEM] = min_low_pfn; > > + max_zone_pfn[ZONE_HIGHMEM] = max_high_pfn; > > This is correct with PAE40, but it will break !PAE40 when "highm

[PATCH] ARC: Use max_high_pfn as a HIGHMEM zone border

2021-04-26 Thread Vladimir Isaev
Commit 4af22ded0ecf ("arc: fix memory initialization for systems with two memory banks") fixed highmem, but not for PAE case when highmem is actually bigger than lowmem. Signed-off-by: Vladimir Isaev Cc: Mike Rapoport --- arch/arc/mm/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

Re: [PATCH] ARC: Use max_high_pfn as a HIGHMEM zone border

2021-04-26 Thread Mike Rapoport
Hi, On Mon, Apr 26, 2021 at 01:10:04PM +0300, Vladimir Isaev wrote: > Commit 4af22ded0ecf ("arc: fix memory initialization for systems with two > memory banks") fixed highmem, but not for PAE case when highmem is > actually bigger than lowmem. > > Signed-off-by: Vladimir Isaev > Cc: Mike Rapopor