Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-04-04 Thread Stas Sergeev
04.04.2017 05:05, Ricardo Neri пишет: On Sat, 2017-04-01 at 16:08 +0300, Stas Sergeev wrote: 30.03.2017 08:14, Ricardo Neri пишет: You know the wine's requirements now - they are very small. And dosemu doesn't need anything at all but smsw. And even smsw is very rare. But emulation is still

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-04-04 Thread Alexandre Julliard
Ricardo Neri writes: > On Fri, 2017-03-31 at 16:11 +0200, Alexandre Julliard wrote: >> Ricardo Neri writes: >> >> > On Thu, 2017-03-30 at 13:10 +0300, Stas Sergeev wrote: >> >> 30.03.2017 08:14, Ricardo Neri пишет:

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-04-03 Thread Ricardo Neri
On Sat, 2017-04-01 at 16:08 +0300, Stas Sergeev wrote: > 30.03.2017 08:14, Ricardo Neri пишет: > >> You know the wine's > >> requirements now - they are very small. And > >> dosemu doesn't need anything at all but smsw. > >> And even smsw is very rare. > > But emulation is

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-04-03 Thread Ricardo Neri
On Fri, 2017-03-31 at 16:11 +0200, Alexandre Julliard wrote: > Ricardo Neri writes: > > > On Thu, 2017-03-30 at 13:10 +0300, Stas Sergeev wrote: > >> 30.03.2017 08:14, Ricardo Neri пишет: > >> But at least dosemu implements it, so probably it is

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-04-01 Thread H. Peter Anvin
,linux-msdos@vger.kernel.org,wine-de...@winehq.org From: h...@zytor.com Message-ID: <3fd12652-aa83-4d73-9914-bba089e58...@zytor.com> On April 1, 2017 6:08:43 AM PDT, Stas Sergeev wrote: >30.03.2017 08:14, Ricardo Neri пишет: >>> You know the wine's >>>

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-04-01 Thread Stas Sergeev
30.03.2017 08:14, Ricardo Neri пишет: You know the wine's requirements now - they are very small. And dosemu doesn't need anything at all but smsw. And even smsw is very rare. But emulation is still needed for SMSW, right? Likely so. If you want, I can enable the logging of this command and

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-31 Thread Andy Lutomirski
On Fri, Mar 31, 2017 at 2:26 PM, Stas Sergeev wrote: > 31.03.2017 17:11, Alexandre Julliard пишет: >> >> In fact it would be nice to be able to make sidt/sgdt/etc. segfault >> too. I know a new syscall is a pain, > > Maybe arch_prctl() then? I still like my idea of a generic

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-31 Thread Stas Sergeev
31.03.2017 17:11, Alexandre Julliard пишет: In fact it would be nice to be able to make sidt/sgdt/etc. segfault too. I know a new syscall is a pain, Maybe arch_prctl() then? -- To unsubscribe from this list: send the line "unsubscribe linux-msdos" in the body of a message to

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-31 Thread Alexandre Julliard
Ricardo Neri writes: > On Thu, 2017-03-30 at 13:10 +0300, Stas Sergeev wrote: >> 30.03.2017 08:14, Ricardo Neri пишет: >> But at least dosemu implements it, so probably it is needed. >> >>> Right. >> >>> >> Of course if it is used by one of 100

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-30 Thread Ricardo Neri
On Thu, 2017-03-30 at 13:10 +0300, Stas Sergeev wrote: > 30.03.2017 08:14, Ricardo Neri пишет: > But at least dosemu implements it, so probably it is needed. > >>> Right. > >>> > Of course if it is used by one of 100 DOS progs, then there > is an option to just add its support to

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-30 Thread Stas Sergeev
30.03.2017 08:14, Ricardo Neri пишет: But at least dosemu implements it, so probably it is needed. Right. Of course if it is used by one of 100 DOS progs, then there is an option to just add its support to dosemu2 and pretend the compatibility problems did not exist. :) Do you mean relaying

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-29 Thread Ricardo Neri
On Wed, 2017-03-29 at 23:55 +0300, Stas Sergeev wrote: > 29.03.2017 07:38, Ricardo Neri пишет: > >> Probably you could also remove > >> the sldt and str emulation for protected mode, because, > >> as I understand from this thread, wine does not > >> need those. > > I see. I would lean on keeping

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-29 Thread Stas Sergeev
11.03.2017 02:59, Ricardo Neri пишет: On Fri, 2017-03-10 at 14:33 +0300, Stas Sergeev wrote: Why would you need one? Or do you really want to allow these instructions in v86 by the means of emulation? If so - this wasn't clearly stated in the patch description, neither it was properly

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-29 Thread Stas Sergeev
29.03.2017 07:38, Ricardo Neri пишет: Probably you could also remove the sldt and str emulation for protected mode, because, as I understand from this thread, wine does not need those. I see. I would lean on keeping the emulation because I already implemented it :), for completeness, and

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-28 Thread Ricardo Neri
On Tue, 2017-03-28 at 12:38 +0300, Stas Sergeev wrote: > 28.03.2017 02:46, Ricardo Neri пишет: > > On Tue, 2017-03-14 at 00:25 +0300, Stas Sergeev wrote: > >> 11.03.2017 02:59, Ricardo Neri пишет: > >>> On Fri, 2017-03-10 at 14:33 +0300, Stas Sergeev wrote: > >>> > Why would you need one? >

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-28 Thread Stas Sergeev
28.03.2017 02:46, Ricardo Neri пишет: On Tue, 2017-03-14 at 00:25 +0300, Stas Sergeev wrote: 11.03.2017 02:59, Ricardo Neri пишет: On Fri, 2017-03-10 at 14:33 +0300, Stas Sergeev wrote: Why would you need one? Or do you really want to allow these instructions in v86 by the means of

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-27 Thread Ricardo Neri
On Tue, 2017-03-14 at 00:25 +0300, Stas Sergeev wrote: > 11.03.2017 02:59, Ricardo Neri пишет: > > On Fri, 2017-03-10 at 14:33 +0300, Stas Sergeev wrote: > > > >> Why would you need one? > >> Or do you really want to allow these instructions > >> in v86 by the means of emulation? If so - this

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-10 Thread Ricardo Neri
On Fri, 2017-03-10 at 06:17 -0800, Andy Lutomirski wrote: > On Fri, Mar 10, 2017 at 3:33 AM, Stas Sergeev wrote: > > 10.03.2017 05:39, Andy Lutomirski пишет: > > > >> On Thu, Mar 9, 2017 at 2:10 PM, Stas Sergeev wrote: > >>> > >>> 09.03.2017 04:15, Ricardo Neri пишет:

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-10 Thread Ricardo Neri
On Sat, 2017-03-11 at 02:58 +0300, Stas Sergeev wrote: > 11.03.2017 02:47, Ricardo Neri пишет: > >> > It doesn't need to be a matter of this particular > patch set, i.e. this proposal should not trigger a > v7 resend of all 21 patches. :) But it would be useful > for the future

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-10 Thread Ricardo Neri
On Fri, 2017-03-10 at 14:33 +0300, Stas Sergeev wrote: > 10.03.2017 05:39, Andy Lutomirski пишет: > > On Thu, Mar 9, 2017 at 2:10 PM, Stas Sergeev wrote: > >> 09.03.2017 04:15, Ricardo Neri пишет: > >> > >>> On Wed, 2017-03-08 at 08:46 -0800, Andy Lutomirski wrote: > On Wed,

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-10 Thread Stas Sergeev
11.03.2017 02:47, Ricardo Neri пишет: It doesn't need to be a matter of this particular patch set, i.e. this proposal should not trigger a v7 resend of all 21 patches. :) But it would be useful for the future development of dosemu2. Would dosemu2 use 32-bit processes in order to keep

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-10 Thread Ricardo Neri
On Thu, 2017-03-09 at 18:39 -0800, Andy Lutomirski wrote: > On Thu, Mar 9, 2017 at 2:10 PM, Stas Sergeev wrote: > > 09.03.2017 04:15, Ricardo Neri пишет: > > > >> On Wed, 2017-03-08 at 08:46 -0800, Andy Lutomirski wrote: > >>> > >>> On Wed, Mar 8, 2017 at 8:29 AM, Stas Sergeev

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-10 Thread Ricardo Neri
On Fri, 2017-03-10 at 01:01 +0300, Stas Sergeev wrote: > 09.03.2017 03:46, Ricardo Neri пишет: > > On Wed, 2017-03-08 at 17:08 +0300, Stas Sergeev wrote: > >> 08.03.2017 03:32, Ricardo Neri пишет: > >>> These are the instructions covered by UMIP: > >>> * SGDT - Store Global Descriptor Table > >>>

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-10 Thread Stas Sergeev
11.03.2017 00:04, Andy Lutomirski пишет: On Fri, Mar 10, 2017 at 2:30 AM, Stas Sergeev wrote: 10.03.2017 05:41, Andy Lutomirski пишет: On Wed, Mar 8, 2017 at 5:11 PM, Ricardo Neri wrote: On Wed, 2017-03-08 at 19:53 +0300, Stas Sergeev

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-10 Thread Andy Lutomirski
On Fri, Mar 10, 2017 at 2:30 AM, Stas Sergeev wrote: > 10.03.2017 05:41, Andy Lutomirski пишет: > >> On Wed, Mar 8, 2017 at 5:11 PM, Ricardo Neri >> wrote: >>> >>> On Wed, 2017-03-08 at 19:53 +0300, Stas Sergeev wrote: 08.03.2017

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-10 Thread Stas Sergeev
10.03.2017 05:41, Andy Lutomirski пишет: On Wed, Mar 8, 2017 at 5:11 PM, Ricardo Neri wrote: On Wed, 2017-03-08 at 19:53 +0300, Stas Sergeev wrote: 08.03.2017 19:46, Andy Lutomirski пишет: No no, since I meant prot mode, this is not what I need. I would

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-10 Thread Andy Lutomirski
On Fri, Mar 10, 2017 at 3:33 AM, Stas Sergeev wrote: > 10.03.2017 05:39, Andy Lutomirski пишет: > >> On Thu, Mar 9, 2017 at 2:10 PM, Stas Sergeev wrote: >>> >>> 09.03.2017 04:15, Ricardo Neri пишет: >>> On Wed, 2017-03-08 at 08:46 -0800, Andy Lutomirski wrote:

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-10 Thread Stas Sergeev
10.03.2017 05:39, Andy Lutomirski пишет: On Thu, Mar 9, 2017 at 2:10 PM, Stas Sergeev wrote: 09.03.2017 04:15, Ricardo Neri пишет: On Wed, 2017-03-08 at 08:46 -0800, Andy Lutomirski wrote: On Wed, Mar 8, 2017 at 8:29 AM, Stas Sergeev wrote: 08.03.2017 19:06,

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-09 Thread Andy Lutomirski
On Wed, Mar 8, 2017 at 5:11 PM, Ricardo Neri wrote: > On Wed, 2017-03-08 at 19:53 +0300, Stas Sergeev wrote: >> 08.03.2017 19:46, Andy Lutomirski пишет: >> >> No no, since I meant prot mode, this is not what I need. >> >> I would never need to disable UMIP

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-09 Thread Andy Lutomirski
On Thu, Mar 9, 2017 at 2:10 PM, Stas Sergeev wrote: > 09.03.2017 04:15, Ricardo Neri пишет: > >> On Wed, 2017-03-08 at 08:46 -0800, Andy Lutomirski wrote: >>> >>> On Wed, Mar 8, 2017 at 8:29 AM, Stas Sergeev wrote: 08.03.2017 19:06, Andy Lutomirski пишет:

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-09 Thread Stas Sergeev
09.03.2017 03:46, Ricardo Neri пишет: On Wed, 2017-03-08 at 17:08 +0300, Stas Sergeev wrote: 08.03.2017 03:32, Ricardo Neri пишет: These are the instructions covered by UMIP: * SGDT - Store Global Descriptor Table * SIDT - Store Interrupt Descriptor Table * SLDT - Store Local Descriptor Table

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-09 Thread Stas Sergeev
09.03.2017 04:15, Ricardo Neri пишет: On Wed, 2017-03-08 at 08:46 -0800, Andy Lutomirski wrote: On Wed, Mar 8, 2017 at 8:29 AM, Stas Sergeev wrote: 08.03.2017 19:06, Andy Lutomirski пишет: On Wed, Mar 8, 2017 at 6:08 AM, Stas Sergeev wrote: 08.03.2017 03:32,

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-09 Thread Stas Sergeev
09.03.2017 04:11, Ricardo Neri пишет: On Wed, 2017-03-08 at 19:53 +0300, Stas Sergeev wrote: 08.03.2017 19:46, Andy Lutomirski пишет: No no, since I meant prot mode, this is not what I need. I would never need to disable UMIP as to allow the prot mode apps to do SLDT. Instead it would be good

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-08 Thread Ricardo Neri
On Wed, 2017-03-08 at 08:46 -0800, Andy Lutomirski wrote: > On Wed, Mar 8, 2017 at 8:29 AM, Stas Sergeev wrote: > > 08.03.2017 19:06, Andy Lutomirski пишет: > >> > >> On Wed, Mar 8, 2017 at 6:08 AM, Stas Sergeev wrote: > >>> > >>> 08.03.2017 03:32, Ricardo Neri пишет:

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-08 Thread Ricardo Neri
On Wed, 2017-03-08 at 19:53 +0300, Stas Sergeev wrote: > 08.03.2017 19:46, Andy Lutomirski пишет: > >> No no, since I meant prot mode, this is not what I need. > >> I would never need to disable UMIP as to allow the > >> prot mode apps to do SLDT. Instead it would be good > >> to have an ability

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-08 Thread Ricardo Neri
On Wed, 2017-03-08 at 17:08 +0300, Stas Sergeev wrote: > 08.03.2017 03:32, Ricardo Neri пишет: > > These are the instructions covered by UMIP: > > * SGDT - Store Global Descriptor Table > > * SIDT - Store Interrupt Descriptor Table > > * SLDT - Store Local Descriptor Table > > * SMSW - Store

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-08 Thread Stas Sergeev
08.03.2017 19:06, Andy Lutomirski пишет: On Wed, Mar 8, 2017 at 6:08 AM, Stas Sergeev wrote: 08.03.2017 03:32, Ricardo Neri пишет: These are the instructions covered by UMIP: * SGDT - Store Global Descriptor Table * SIDT - Store Interrupt Descriptor Table * SLDT - Store Local

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-08 Thread Andy Lutomirski
On Wed, Mar 8, 2017 at 8:29 AM, Stas Sergeev wrote: > 08.03.2017 19:06, Andy Lutomirski пишет: >> >> On Wed, Mar 8, 2017 at 6:08 AM, Stas Sergeev wrote: >>> >>> 08.03.2017 03:32, Ricardo Neri пишет: These are the instructions covered by UMIP: * SGDT -

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-08 Thread Stas Sergeev
08.03.2017 19:46, Andy Lutomirski пишет: No no, since I meant prot mode, this is not what I need. I would never need to disable UMIP as to allow the prot mode apps to do SLDT. Instead it would be good to have an ability to provide a replacement for the dummy emulation that is currently being

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-08 Thread Andy Lutomirski
On Wed, Mar 8, 2017 at 6:08 AM, Stas Sergeev wrote: > 08.03.2017 03:32, Ricardo Neri пишет: >> >> These are the instructions covered by UMIP: >> * SGDT - Store Global Descriptor Table >> * SIDT - Store Interrupt Descriptor Table >> * SLDT - Store Local Descriptor Table >> * SMSW -

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-08 Thread Andy Lutomirski
On Tue, Mar 7, 2017 at 4:32 PM, Ricardo Neri wrote: > This is v6 of this series. The five previous submissions can be found > here [1], here [2], here[3], here[4], and here[5]. This version addresses > the comments received in v4 plus improvements of the

Re: [v6 PATCH 00/21] x86: Enable User-Mode Instruction Prevention

2017-03-08 Thread Stas Sergeev
08.03.2017 03:32, Ricardo Neri пишет: These are the instructions covered by UMIP: * SGDT - Store Global Descriptor Table * SIDT - Store Interrupt Descriptor Table * SLDT - Store Local Descriptor Table * SMSW - Store Machine Status Word * STR - Store Task Register This patchset initially treated