Re: [PATCH 0/4] kdump: crashkernel reservation from CMA

2023-12-06 Thread Baoquan He
On 12/06/23 at 04:19pm, Michal Hocko wrote: > On Wed 06-12-23 14:49:51, Michal Hocko wrote: > > On Wed 06-12-23 12:08:05, Philipp Rudo wrote: > [...] > > > If I understand Documentation/core-api/pin_user_pages.rst correctly you > > > missed case 1 Direct IO. In that case "short term" DMA is allowed

Re: [PATCH v3 5/7] kexec_file, ricv: print out debugging message if required

2023-12-06 Thread Baoquan He
On 12/06/23 at 04:54pm, Conor Dooley wrote: > On Wed, Dec 06, 2023 at 11:37:52PM +0800, Baoquan He wrote: > > On 12/04/23 at 04:14pm, Conor Dooley wrote: > > > On Mon, Dec 04, 2023 at 11:38:05PM +0800, Baoquan He wrote: > > > > On 12/01/23 at 10:38am, Conor Dooley wrote: > > > > > On Thu, Nov 30, 2

Re: [PATCHv4 10/14] x86/tdx: Convert shared memory back to private on kexec

2023-12-06 Thread Edgecombe, Rick P
On Wed, 2023-12-06 at 18:07 +0300, kirill.shute...@linux.intel.com wrote: >  I can't think of any non-ridiculous way to handle this case. Maybe > we > > need VMM help. > > Do you see a specific way how VMM can help here? I didn't have a specific idea. I was just thinking that the problem is that

Re: [PATCH v3 5/7] kexec_file, ricv: print out debugging message if required

2023-12-06 Thread Conor Dooley
On Wed, Dec 06, 2023 at 11:37:52PM +0800, Baoquan He wrote: > On 12/04/23 at 04:14pm, Conor Dooley wrote: > > On Mon, Dec 04, 2023 at 11:38:05PM +0800, Baoquan He wrote: > > > On 12/01/23 at 10:38am, Conor Dooley wrote: > > > > On Thu, Nov 30, 2023 at 10:39:53AM +0800, Baoquan He wrote: > > > > >

Re: [PATCH v3 5/7] kexec_file, ricv: print out debugging message if required

2023-12-06 Thread Baoquan He
On 12/04/23 at 04:14pm, Conor Dooley wrote: > On Mon, Dec 04, 2023 at 11:38:05PM +0800, Baoquan He wrote: > > On 12/01/23 at 10:38am, Conor Dooley wrote: > > > On Thu, Nov 30, 2023 at 10:39:53AM +0800, Baoquan He wrote: > > > > > > $subject has a typo in the arch bit :) > > > > Indeed, will fix i

Re: [PATCHv4 10/14] x86/tdx: Convert shared memory back to private on kexec

2023-12-06 Thread kirill.shute...@linux.intel.com
On Wed, Dec 06, 2023 at 01:28:08AM +, Edgecombe, Rick P wrote: > On Tue, 2023-12-05 at 03:45 +0300, Kirill A. Shutemov wrote:  > > +static void tdx_kexec_unshare_mem(bool crash) > > +{ > > +   unsigned long addr, end; > > +   long found = 0, shared; > > + > > +   /* Stop new private

Re: [PATCH 0/4] kdump: crashkernel reservation from CMA

2023-12-06 Thread Michal Hocko
On Wed 06-12-23 12:08:05, Philipp Rudo wrote: > On Fri, 1 Dec 2023 17:59:02 +0100 > Michal Hocko wrote: > > > On Fri 01-12-23 16:51:13, Philipp Rudo wrote: > > > On Fri, 1 Dec 2023 12:55:52 +0100 > > > Michal Hocko wrote: > > > > > > > On Fri 01-12-23 12:33:53, Philipp Rudo wrote: > > > > [..

Re: [PATCHv4 06/14] x86/kexec: Keep CR4.MCE set during kexec for TDX guest

2023-12-06 Thread kirill.shute...@linux.intel.com
On Tue, Dec 05, 2023 at 11:58:45PM +, Huang, Kai wrote: > On Tue, 2023-12-05 at 03:45 +0300, Kirill A. Shutemov wrote: > > TDX guests are not allowed to clear CR4.MCE. Attempt to clear it leads > > to #VE. > > > > Use alternatives to keep the flag during kexec for TDX guests. > > > > The chan

Re: [PATCH 0/4] kdump: crashkernel reservation from CMA

2023-12-06 Thread David Hildenbrand
On 06.12.23 12:08, Philipp Rudo wrote: On Fri, 1 Dec 2023 17:59:02 +0100 Michal Hocko wrote: On Fri 01-12-23 16:51:13, Philipp Rudo wrote: On Fri, 1 Dec 2023 12:55:52 +0100 Michal Hocko wrote: On Fri 01-12-23 12:33:53, Philipp Rudo wrote: [...] And yes, those are all what-if concerns b

Re: [PATCH 0/4] kdump: crashkernel reservation from CMA

2023-12-06 Thread Philipp Rudo
On Fri, 1 Dec 2023 17:59:02 +0100 Michal Hocko wrote: > On Fri 01-12-23 16:51:13, Philipp Rudo wrote: > > On Fri, 1 Dec 2023 12:55:52 +0100 > > Michal Hocko wrote: > > > > > On Fri 01-12-23 12:33:53, Philipp Rudo wrote: > > > [...] > > > > And yes, those are all what-if concerns but unfortu

Re: [PATCH 07/10] printk: Remove the now superfluous sentinel elements from ctl_table array

2023-12-06 Thread Petr Mladek
On Mon 2023-12-04 09:56:28, Joel Granados wrote: > Hey Petr > > I missed this message somehow > > On Tue, Nov 28, 2023 at 03:07:43PM +0100, Petr Mladek wrote: > > On Tue 2023-11-07 14:45:07, Joel Granados via B4 Relay wrote: > > > From: Joel Granados > > > > > > This commit comes at the tai

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2023-12-06 Thread Jakub Kovarik
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