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From: "Chen, Yu C" <yu.c.chen@intel.com>
To: Andy Lutomirski <luto@amacapital.net>, "Zheng, Lv" <lv.zheng@intel.com>
Cc: "Moore, Robert" <robert.moore@intel.com>,
	"Wysocki, Rafael J" <rafael.j.wysocki@intel.com>,
	"Brown, Len" <len.brown@intel.com>,
	Andy Lutomirski <luto@kernel.org>, Lv Zheng <zetalog@gmail.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Linux ACPI <linux-acpi@vger.kernel.org>,
	"H. Peter Anvin" <hpa@zytor.com>, Borislav Petkov <bp@alien8.de>
Subject: RE: [PATCH v4 7/7] ACPI / x86: introduce acpi_os_readable() support
Date: Tue, 22 Dec 2015 01:03:43 +0000	[thread overview]
Message-ID: <36DF59CE26D8EE47B0655C516E9CE640286886D1@shsmsx102.ccr.corp.intel.com> (raw)
In-Reply-To: <CALCETrWzn_9wL_7zL4GdHrFB3c9qaAjnEbLdU+bppLf-GVsx3w@mail.gmail.com>

Hi Andy,
thanks for your review,

> -----Original Message-----
> From: Andy Lutomirski [mailto:luto@amacapital.net]
> Sent: Friday, December 18, 2015 1:00 AM
> To: Zheng, Lv
> Cc: Chen, Yu C; Moore, Robert; Wysocki, Rafael J; Brown, Len; Andy
> Lutomirski; Lv Zheng; linux-kernel@vger.kernel.org; Linux ACPI; H. Peter
> Anvin; Borislav Petkov
> Subject: Re: [PATCH v4 7/7] ACPI / x86: introduce acpi_os_readable() support
> 
[cut]
> 
> I think that hpa or Borislav [cc'd] could address the memory map details
> better than I could.  However, this functionality seems strange.
> 
> Are these physical addresses or virtual addresses that are being dumped?  
[Yu] They are  virtual addresses to be dumped.
> In  either case, ISTM that using something iike page_is_ram might be a lot
> simpler.
[Yu] if i understand correctly, this API is used to check if the address is a valid 
'kmalloc' style address, but not 'kmap' or 'vmalloc' address, and page_is_ram
might treat the latter as valid address?

thanks,
Yu

WARNING: multiple messages have this Message-ID (diff)
From: "Chen, Yu C" <yu.c.chen@intel.com>
To: Andy Lutomirski <luto@amacapital.net>, "Zheng, Lv" <lv.zheng@intel.com>
Cc: "Moore, Robert" <robert.moore@intel.com>,
	"Wysocki, Rafael J" <rafael.j.wysocki@intel.com>,
	"Brown, Len" <len.brown@intel.com>,
	"Andy Lutomirski" <luto@kernel.org>, Lv Zheng <zetalog@gmail.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Linux ACPI <linux-acpi@vger.kernel.org>,
	"H. Peter Anvin" <hpa@zytor.com>,
	"Borislav Petkov" <bp@alien8.de>
Subject: RE: [PATCH v4 7/7] ACPI / x86: introduce acpi_os_readable() support
Date: Tue, 22 Dec 2015 01:03:43 +0000	[thread overview]
Message-ID: <36DF59CE26D8EE47B0655C516E9CE640286886D1@shsmsx102.ccr.corp.intel.com> (raw)
In-Reply-To: <CALCETrWzn_9wL_7zL4GdHrFB3c9qaAjnEbLdU+bppLf-GVsx3w@mail.gmail.com>

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="utf-8", Size: 1167 bytes --]

Hi Andy,
thanks for your review,

> -----Original Message-----
> From: Andy Lutomirski [mailto:luto@amacapital.net]
> Sent: Friday, December 18, 2015 1:00 AM
> To: Zheng, Lv
> Cc: Chen, Yu C; Moore, Robert; Wysocki, Rafael J; Brown, Len; Andy
> Lutomirski; Lv Zheng; linux-kernel@vger.kernel.org; Linux ACPI; H. Peter
> Anvin; Borislav Petkov
> Subject: Re: [PATCH v4 7/7] ACPI / x86: introduce acpi_os_readable() support
> 
[cut]
> 
> I think that hpa or Borislav [cc'd] could address the memory map details
> better than I could.  However, this functionality seems strange.
> 
> Are these physical addresses or virtual addresses that are being dumped?  
[Yu] They are  virtual addresses to be dumped.
> In  either case, ISTM that using something iike page_is_ram might be a lot
> simpler.
[Yu] if i understand correctly, this API is used to check if the address is a valid 
'kmalloc' style address, but not 'kmap' or 'vmalloc' address, and page_is_ram
might treat the latter as valid address?

thanks,
Yu
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  reply	other threads:[~2015-12-22  1:03 UTC|newest]

Thread overview: 131+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <8c1016ca8a570ba7c7a1c9f0f88d73cd83cea490>
2015-10-19  2:24 ` [PATCH v2 00/14] ACPICA: 20150930 Release Lv Zheng
2015-10-19  2:24   ` Lv Zheng
2015-10-19  2:24   ` [PATCH v2 01/14] ACPICA: Remove unnecessary conditional compilation Lv Zheng
2015-10-19  2:24     ` Lv Zheng
2015-10-19  2:24   ` [PATCH v2 02/14] ACPICA: iASL: Add symbolic operator support for Index() operator Lv Zheng
2015-10-19  2:24     ` Lv Zheng
2015-10-19  2:24   ` [PATCH v2 03/14] ACPICA: Update exception code for "file not found" error Lv Zheng
2015-10-19  2:24     ` Lv Zheng
2015-10-19  2:24   ` [PATCH v2 04/14] ACPICA: Debugger: Update mutexes used for multithreaded debugger Lv Zheng
2015-10-19  2:24     ` Lv Zheng
2015-10-19  2:24   ` [PATCH v2 05/14] ACPICA: Update NFIT table to rename a flags field Lv Zheng
2015-10-19  2:24     ` Lv Zheng
2015-10-19  2:24   ` [PATCH v2 06/14] ACPICA: Improve typechecking, both compile-time and runtime Lv Zheng
2015-10-19  2:24     ` Lv Zheng
2015-10-19  2:25   ` [PATCH v2 07/14] ACPICA: iASL: General cleanup of the file suffix #defines Lv Zheng
2015-10-19  2:25     ` Lv Zheng
2015-10-19  2:25   ` [PATCH v2 08/14] ACPICA: Linuxize: Export debugger files to Linux Lv Zheng
2015-10-19  2:25     ` Lv Zheng
2015-10-19  2:25   ` [PATCH v2 09/14] ACPICA: Debugger: Fix "quit/exit" command by cleaning up user commands termination logic Lv Zheng
2015-10-19  2:25     ` Lv Zheng
2015-10-19 21:04     ` Rafael J. Wysocki
2015-10-20  2:03       ` Zheng, Lv
2015-10-20  2:03         ` Zheng, Lv
2015-10-20  7:14         ` Zheng, Lv
2015-10-20  7:14           ` Zheng, Lv
2015-10-19  2:25   ` [PATCH v2 10/14] ACPICA: Debugger: Fix "terminate" command by cleaning up subsystem shutdown logic Lv Zheng
2015-10-19  2:25     ` Lv Zheng
2015-10-19  2:25   ` [PATCH v2 11/14] ACPICA: Debugger: Add thread ID support so that single step mode can only apply to the debugger thread Lv Zheng
2015-10-19  2:25     ` Lv Zheng
2015-10-19  2:25   ` [PATCH v2 12/14] ACPI: Enable build of AML interpreter debugger Lv Zheng
2015-10-19  2:25     ` Lv Zheng
2015-10-19  2:26   ` [PATCH v2 13/14] ACPICA: Debugger: Fix dead lock issue ocurred in single stepping mode Lv Zheng
2015-10-19  2:26     ` Lv Zheng
2015-10-19  2:26   ` [PATCH v2 14/14] ACPICA: Update version to 20150930 Lv Zheng
2015-10-19  2:26     ` Lv Zheng
2015-11-06  6:46 ` [RFC PATCH v2 0/5] ACPICA / debugger: Add in-kernel AML debugger support Lv Zheng
2015-11-06  6:46   ` Lv Zheng
2015-11-06  6:46   ` [RFC PATCH v2 1/5] ACPICA: Debugger: Remove unnecessary status check Lv Zheng
2015-11-06  6:46     ` Lv Zheng
2015-11-06  6:47   ` [RFC PATCH v2 2/5] ACPICA: Debugger: Convert some mechanisms to OSPM specific Lv Zheng
2015-11-06  6:47     ` Lv Zheng
2015-11-06  6:47   ` [RFC PATCH v2 3/5] ACPI / debugger: Add IO interface to access debugger functionalities Lv Zheng
2015-11-06  6:47     ` Lv Zheng
2015-11-06  6:47   ` [RFC PATCH v2 4/5] tools/power/acpi: Add userspace AML interface support Lv Zheng
2015-11-06  6:47     ` Lv Zheng
2015-11-06  6:47   ` [RFC PATCH v2 5/5] ACPI / debugger: Add module support for ACPI debugger Lv Zheng
2015-11-06  6:47     ` Lv Zheng
2015-11-10  8:21   ` [PATCH v2 0/7] ACPICA / debugger: Add in-kernel AML debugger support Lv Zheng
2015-11-10  8:21     ` Lv Zheng
2015-11-10  8:21     ` [PATCH v2 1/7] ACPICA: Debugger: Remove unnecessary status check Lv Zheng
2015-11-10  8:21       ` Lv Zheng
2015-11-10  8:21     ` [PATCH v2 2/7] ACPICA: Debugger: Convert some mechanisms to OSPM specific Lv Zheng
2015-11-10  8:21       ` Lv Zheng
2015-11-10  8:21     ` [PATCH v2 3/7] ACPICA: Debugger: Fix runtime stub issues of ACPI_DEBUGGER_EXEC using different stub mechanism Lv Zheng
2015-11-10  8:21       ` Lv Zheng
2015-11-10  8:22     ` [PATCH v2 4/7] ACPI / debugger: Add IO interface to access debugger functionalities Lv Zheng
2015-11-10  8:22       ` Lv Zheng
2015-11-10  8:22     ` [PATCH v2 5/7] ACPI / x86: introduce acpi_os_readable() support Lv Zheng
2015-11-10  8:22       ` Lv Zheng
2015-11-10  9:42       ` Chen, Yu C
2015-11-10 10:46         ` Chen, Yu C
2015-11-10 13:04         ` Andy Shevchenko
2015-11-10 13:56           ` Chen, Yu C
2015-11-10 13:56             ` Chen, Yu C
2015-11-11  5:06         ` Zheng, Lv
2015-11-11  5:27           ` Chen, Yu C
2015-11-17  1:49           ` Zheng, Lv
2015-11-10  8:22     ` [PATCH v2 6/7] tools/power/acpi: Add userspace AML interface support Lv Zheng
2015-11-10  8:22       ` Lv Zheng
2015-11-10  8:22     ` [PATCH v2 7/7] ACPI / debugger: Add module support for ACPI debugger Lv Zheng
2015-11-10  8:22       ` Lv Zheng
2015-11-19  6:08   ` [PATCH v3 0/6] ACPICA / debugger: Add in-kernel AML debugger support Lv Zheng
2015-11-19  6:08     ` Lv Zheng
2015-11-19  6:08     ` [PATCH v3 1/6] ACPICA: Debugger: Remove unnecessary status check Lv Zheng
2015-11-19  6:08       ` Lv Zheng
2015-11-19  6:08     ` [PATCH v3 2/6] ACPICA: Debugger: Convert some mechanisms to OSPM specific Lv Zheng
2015-11-19  6:08       ` Lv Zheng
2015-11-19  6:08     ` [PATCH v3 3/6] ACPICA: Debugger: Fix runtime stub issues of ACPI_DEBUGGER_EXEC using different stub mechanism Lv Zheng
2015-11-19  6:08       ` Lv Zheng
2015-11-19  6:08     ` [PATCH v3 4/6] ACPI / debugger: Add IO interface to access debugger functionalities Lv Zheng
2015-11-19  6:08       ` Lv Zheng
2015-11-19  6:08     ` [PATCH v3 5/6] tools/power/acpi: Add userspace AML interface support Lv Zheng
2015-11-19  6:08       ` Lv Zheng
2015-11-19  6:09     ` [PATCH v3 6/6] ACPI / debugger: Add module support for ACPI debugger Lv Zheng
2015-11-19  6:09       ` Lv Zheng
2015-11-19  6:09   ` [PATCH v3] ACPI / x86: introduce acpi_os_readable() support Lv Zheng
2015-11-19  6:09     ` Lv Zheng
2015-12-03  2:40   ` [PATCH v4 0/7] ACPICA / debugger: Add in-kernel AML debugger support Lv Zheng
2015-12-03  2:40     ` Lv Zheng
2015-12-03  2:42     ` [PATCH v4 1/7] ACPICA: Debugger: Remove unnecessary status check Lv Zheng
2015-12-03  2:42       ` Lv Zheng
2015-12-03  2:42     ` [PATCH v4 2/7] ACPICA: Debugger: Convert some mechanisms to OSPM specific Lv Zheng
2015-12-03  2:42       ` Lv Zheng
2015-12-03  2:42     ` [PATCH v4 3/7] ACPICA: Debugger: Fix runtime stub issues of ACPI_DEBUGGER_EXEC using different stub mechanism Lv Zheng
2015-12-03  2:42       ` Lv Zheng
2015-12-03  2:43     ` [PATCH v4 4/7] ACPI / debugger: Add IO interface to access debugger functionalities Lv Zheng
2015-12-03  2:43       ` Lv Zheng
2015-12-03 22:27       ` Andy Lutomirski
2015-12-03 23:34         ` Rafael J. Wysocki
2015-12-03  2:43     ` [PATCH v4 5/7] tools/power/acpi: Add userspace AML interface support Lv Zheng
2015-12-03  2:43       ` Lv Zheng
2015-12-03  2:43     ` [PATCH v4 6/7] ACPI / debugger: Add module support for ACPI debugger Lv Zheng
2015-12-03  2:43       ` Lv Zheng
2015-12-03  2:43     ` [PATCH v4 7/7] ACPI / x86: introduce acpi_os_readable() support Lv Zheng
2015-12-03  2:43       ` Lv Zheng
2015-12-14 23:28       ` Andy Lutomirski
2015-12-15  6:13         ` Chen, Yu C
2015-12-15  6:13           ` Chen, Yu C
2015-12-15  8:52           ` Zheng, Lv
2015-12-15  8:52             ` Zheng, Lv
2015-12-16  0:25           ` Zheng, Lv
2015-12-16  0:25             ` Zheng, Lv
2015-12-17 16:59             ` Andy Lutomirski
2015-12-22  1:03               ` Chen, Yu C [this message]
2015-12-22  1:03                 ` Chen, Yu C
2015-12-22 22:49                 ` Andy Lutomirski
2015-12-23  3:25                   ` Zheng, Lv
2015-12-23  3:25                     ` Zheng, Lv
2015-12-24  1:40                     ` Andy Lutomirski
2015-12-24  7:57                       ` Chen, Yu C
2015-12-24  7:57                         ` Chen, Yu C
2015-12-24  8:01                       ` Chen, Yu C
2015-12-24  8:01                         ` Chen, Yu C
2015-12-14 23:43       ` Rafael J. Wysocki
2015-12-14 23:44     ` [PATCH v4 0/7] ACPICA / debugger: Add in-kernel AML debugger support Rafael J. Wysocki
2015-12-15  2:55       ` Zheng, Lv
2015-12-15  2:55         ` Zheng, Lv
2015-12-24  6:16   ` [PATCH] ACPI / debugger: Fix an issue a flag is modified without locking Lv Zheng
2015-12-24  6:16     ` Lv Zheng
2015-12-25  3:22   ` [PATCH] ACPI / debugger: Fix a redundant mutex unlock issue in acpi_aml_open() Lv Zheng
2015-12-25  3:22     ` Lv Zheng

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