Messages in this thread |  | | | From | Jeremy Fitzhardinge <> | | Subject | [GIT PULL] Xen core updates | | Date | Thu, 7 May 2009 13:24:54 -0700 |
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Hi Ingo,
Here's a set of core Xen updates, which is a superset of the bugfix patches I posted earlier.
The additional patches are:
xen/i386: make sure initial VGA/ISA mappings are not overridden
Make sure that ISA identity mappings are not overridden by _PAGE_IOMAP mappings.
x86: use flush_tlb_others to implement flush_tlb_all
Paravirtualize flush_tlb_all by implementing it in terms of flush_tlb_others. This avoids some unnecessary IPIs when flushing kernel mappings.
xen: cache cr0 value to avoid trap'n'emulate for read_cr0
read_cr0 is used every context switch to set TS, but Xen has been implementing it with a trap'n'emulate of a native "mov cr0". This adds a Xen-specific implementation of the read_cr0 pvop to avoid the extra trap.
The following changes since commit e7c064889606aab3569669078c69b87b2c527e72: Jeremy Fitzhardinge (1): xen: add FIX_TEXT_POKE to fixmap
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git xen-tip/core
Jeremy Fitzhardinge (8): xen/x86-64: fix breakpoints and hardware watchpoints xen/x86-64: clean up warnings about IST-using traps xen: cache cr0 value to avoid trap'n'emulate for read_cr0 xen: deal with NMI's use of IST too xen/i386: make sure initial VGA/ISA mappings are not overridden x86: use flush_tlb_others to implement flush_tlb_all xen/i386: reserve Xen pagetables xen: reserve Xen start_info rather than e820 reserving
arch/x86/include/asm/traps.h | 2 + arch/x86/kernel/entry_64.S | 4 +++ arch/x86/mm/tlb.c | 29 ++++++++++++++-------- arch/x86/xen/enlighten.c | 54 ++++++++++++++++++++++++++++++++++++++++- arch/x86/xen/mmu.c | 23 ++++++++++++++++- arch/x86/xen/setup.c | 6 ++-- 6 files changed, 100 insertions(+), 18 deletions(-) Thanks, J
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