* [PATCH] x86: Disable HIGHMEM64G selection for M486SX
@ 2021-04-14 10:38 Maciej W. Rozycki
2021-04-19 12:04 ` [tip: x86/build] x86/build: " tip-bot2 for Maciej W. Rozycki
0 siblings, 1 reply; 2+ messages in thread
From: Maciej W. Rozycki @ 2021-04-14 10:38 UTC (permalink / raw)
To: Thomas Gleixner, Ingo Molnar, Borislav Petkov, H. Peter Anvin
Cc: x86, linux-kernel
Fix a regression caused by making the 486SX a separate processor family,
for which the HIGHMEM64G setting has not been updated and therefore has
become exposed as a user selectable option for the M486SX configuration
setting unlike with original M486 and all the other settings that choose
non-PAE-enabled processors:
High Memory Support
> 1. off (NOHIGHMEM)
2. 4GB (HIGHMEM4G)
3. 64GB (HIGHMEM64G)
choice[1-3?]:
With the fix in place the setting is now correctly removed:
High Memory Support
> 1. off (NOHIGHMEM)
2. 4GB (HIGHMEM4G)
choice[1-2?]:
Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Fixes: 87d6021b8143 ("x86/math-emu: Limit MATH_EMULATION to 486SX compatibles")
Cc: stable@vger.kernel.org # v5.5+
---
arch/x86/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
linux-x86-highmem64g-m486sx.diff
Index: linux-macro-ide/arch/x86/Kconfig
===================================================================
--- linux-macro-ide.orig/arch/x86/Kconfig
+++ linux-macro-ide/arch/x86/Kconfig
@@ -1406,7 +1406,7 @@ config HIGHMEM4G
config HIGHMEM64G
bool "64GB"
- depends on !M486 && !M586 && !M586TSC && !M586MMX && !MGEODE_LX && !MGEODEGX1 && !MCYRIXIII && !MELAN && !MWINCHIPC6 && !WINCHIP3D && !MK6
+ depends on !M486SX && !M486 && !M586 && !M586TSC && !M586MMX && !MGEODE_LX && !MGEODEGX1 && !MCYRIXIII && !MELAN && !MWINCHIPC6 && !WINCHIP3D && !MK6
select X86_PAE
help
Select this if you have a 32-bit processor and more than 4
^ permalink raw reply [flat|nested] 2+ messages in thread
* [tip: x86/build] x86/build: Disable HIGHMEM64G selection for M486SX
2021-04-14 10:38 [PATCH] x86: Disable HIGHMEM64G selection for M486SX Maciej W. Rozycki
@ 2021-04-19 12:04 ` tip-bot2 for Maciej W. Rozycki
0 siblings, 0 replies; 2+ messages in thread
From: tip-bot2 for Maciej W. Rozycki @ 2021-04-19 12:04 UTC (permalink / raw)
To: linux-tip-commits
Cc: Maciej W. Rozycki, Borislav Petkov, stable, #, v5.5+, x86, linux-kernel
The following commit has been merged into the x86/build branch of tip:
Commit-ID: 0ef3439cd80ba7770723edb0470d15815914bb62
Gitweb: https://git.kernel.org/tip/0ef3439cd80ba7770723edb0470d15815914bb62
Author: Maciej W. Rozycki <macro@orcam.me.uk>
AuthorDate: Wed, 14 Apr 2021 12:38:28 +02:00
Committer: Borislav Petkov <bp@suse.de>
CommitterDate: Mon, 19 Apr 2021 14:02:12 +02:00
x86/build: Disable HIGHMEM64G selection for M486SX
Fix a regression caused by making the 486SX separately selectable in
Kconfig, for which the HIGHMEM64G setting has not been updated and
therefore has become exposed as a user-selectable option for the M486SX
configuration setting unlike with original M486 and all the other
settings that choose non-PAE-enabled processors:
High Memory Support
> 1. off (NOHIGHMEM)
2. 4GB (HIGHMEM4G)
3. 64GB (HIGHMEM64G)
choice[1-3?]:
With the fix in place the setting is now correctly removed:
High Memory Support
> 1. off (NOHIGHMEM)
2. 4GB (HIGHMEM4G)
choice[1-2?]:
[ bp: Massage commit message. ]
Fixes: 87d6021b8143 ("x86/math-emu: Limit MATH_EMULATION to 486SX compatibles")
Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: stable@vger.kernel.org # v5.5+
Link: https://lkml.kernel.org/r/alpine.DEB.2.21.2104141221340.44318@angie.orcam.me.uk
---
arch/x86/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 2792879..268b7d5 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1406,7 +1406,7 @@ config HIGHMEM4G
config HIGHMEM64G
bool "64GB"
- depends on !M486 && !M586 && !M586TSC && !M586MMX && !MGEODE_LX && !MGEODEGX1 && !MCYRIXIII && !MELAN && !MWINCHIPC6 && !WINCHIP3D && !MK6
+ depends on !M486SX && !M486 && !M586 && !M586TSC && !M586MMX && !MGEODE_LX && !MGEODEGX1 && !MCYRIXIII && !MELAN && !MWINCHIPC6 && !WINCHIP3D && !MK6
select X86_PAE
help
Select this if you have a 32-bit processor and more than 4
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