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arm64 fixes for -rc7

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- Fix cleaning of vDSO directories
 
 - Ensure CNTHCTL_EL2 is fully initialised when booting at EL2
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:

 - Fix cleaning of vDSO directories

 - Ensure CNTHCTL_EL2 is fully initialised when booting at EL2

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: initialize all of CNTHCTL_EL2
  arm64: clean vdso & vdso32 files
This commit is contained in:
Linus Torvalds 2021-08-20 12:18:49 -07:00
commit 54e9ea3cdb
2 changed files with 3 additions and 2 deletions
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2
arch/arm64/Makefile
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@ -183,6 +183,8 @@ endif
# We use MRPROPER_FILES and CLEAN_FILES now # We use MRPROPER_FILES and CLEAN_FILES now
archclean: archclean:
$(Q)$(MAKE) $(clean)=$(boot) $(Q)$(MAKE) $(clean)=$(boot)
$(Q)$(MAKE) $(clean)=arch/arm64/kernel/vdso
$(Q)$(MAKE) $(clean)=arch/arm64/kernel/vdso32
ifeq ($(KBUILD_EXTMOD),) ifeq ($(KBUILD_EXTMOD),)
# We need to generate vdso-offsets.h before compiling certain files in kernel/. # We need to generate vdso-offsets.h before compiling certain files in kernel/.

3
arch/arm64/include/asm/el2_setup.h
View File

@ -33,8 +33,7 @@
* EL2. * EL2.
*/ */
.macro __init_el2_timers .macro __init_el2_timers
mrs x0, cnthctl_el2 mov x0, #3 // Enable EL1 physical timers
orr x0, x0, #3 // Enable EL1 physical timers
msr cnthctl_el2, x0 msr cnthctl_el2, x0
msr cntvoff_el2, xzr // Clear virtual offset msr cntvoff_el2, xzr // Clear virtual offset
.endm .endm