[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 0/3] Fix and cleanup for 32-bit PV sysexit
On Wed, Nov 18, 2015 at 03:06:16PM -0500, Boris Ostrovsky wrote: > The first patch fixes Xen PV regression introduced by 32-bit rewrite. Unlike > the > earlier version it uses ALTERNATIVE instruction and avoids using xen_sysexit > (and sysret32 in compat mode) pv ops, as suggested by Andy. (I ended up > patching > TEST with XOR to avoid extra NOPs, even though I said yesterday it would be > wrong. It's not wrong) > > As result of this patch irq_enable_sysexit and usergs_sysret32 pv ops are not > used anymore by anyone and so can be removed. > > Boris Ostrovsky (3): > x86/xen: Avoid fast syscall path for Xen PV guests > x86: irq_enable_sysexit pv op is no longer needed > x86: usergs_sysret32 pv op is no longer needed > > arch/x86/entry/entry_32.S | 11 ++++------- > arch/x86/entry/entry_64_compat.S | 16 ++++++---------- > arch/x86/include/asm/cpufeature.h | 1 + > arch/x86/include/asm/paravirt.h | 12 ------------ > arch/x86/include/asm/paravirt_types.h | 17 ----------------- > arch/x86/kernel/asm-offsets.c | 3 --- > arch/x86/kernel/asm-offsets_64.c | 1 - > arch/x86/kernel/paravirt.c | 12 ------------ > arch/x86/kernel/paravirt_patch_32.c | 2 -- > arch/x86/kernel/paravirt_patch_64.c | 3 --- > arch/x86/xen/enlighten.c | 7 +++---- > arch/x86/xen/xen-asm_32.S | 14 -------------- > arch/x86/xen/xen-asm_64.S | 19 ------------------- > arch/x86/xen/xen-ops.h | 3 --- > 14 files changed, 14 insertions(+), 107 deletions(-) Can't argue with that diffstat! :-) -- Regards/Gruss, Boris. SUSE Linux GmbH, GF: Felix ImendÃrffer, Jane Smithard, Graham Norton, HRB 21284 (AG NÃrnberg) -- _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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