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Re: [Xen-devel] [PATCH v2 00/11] x86/paravirt: several cleanups


  • To: linux-kernel@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, x86@xxxxxxxxxx, virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx
  • From: Juergen Gross <jgross@xxxxxxxx>
  • Date: Fri, 24 Aug 2018 15:52:55 +0200
  • Autocrypt: addr=jgross@xxxxxxxx; prefer-encrypt=mutual; keydata= xsBNBFOMcBYBCACgGjqjoGvbEouQZw/ToiBg9W98AlM2QHV+iNHsEs7kxWhKMjrioyspZKOB ycWxw3ie3j9uvg9EOB3aN4xiTv4qbnGiTr3oJhkB1gsb6ToJQZ8uxGq2kaV2KL9650I1SJve dYm8Of8Zd621lSmoKOwlNClALZNew72NjJLEzTalU1OdT7/i1TXkH09XSSI8mEQ/ouNcMvIJ NwQpd369y9bfIhWUiVXEK7MlRgUG6MvIj6Y3Am/BBLUVbDa4+gmzDC9ezlZkTZG2t14zWPvx XP3FAp2pkW0xqG7/377qptDmrk42GlSKN4z76ELnLxussxc7I2hx18NUcbP8+uty4bMxABEB AAHNHkp1ZXJnZW4gR3Jvc3MgPGpncm9zc0BzdXNlLmRlPsLAeQQTAQIAIwUCU4xw6wIbAwcL CQgHAwIBBhUIAgkKCwQWAgMBAh4BAheAAAoJELDendYovxMvi4UH/Ri+OXlObzqMANruTd4N zmVBAZgx1VW6jLc8JZjQuJPSsd/a+bNr3BZeLV6lu4Pf1Yl2Log129EX1KWYiFFvPbIiq5M5 kOXTO8Eas4CaScCvAZ9jCMQCgK3pFqYgirwTgfwnPtxFxO/F3ZcS8jovza5khkSKL9JGq8Nk czDTruQ/oy0WUHdUr9uwEfiD9yPFOGqp4S6cISuzBMvaAiC5YGdUGXuPZKXLpnGSjkZswUzY d9BVSitRL5ldsQCg6GhDoEAeIhUC4SQnT9SOWkoDOSFRXZ+7+WIBGLiWMd+yKDdRG5RyP/8f 3tgGiB6cyuYfPDRGsELGjUaTUq3H2xZgIPfOwE0EU4xwFgEIAMsx+gDjgzAY4H1hPVXgoLK8 B93sTQFN9oC6tsb46VpxyLPfJ3T1A6Z6MVkLoCejKTJ3K9MUsBZhxIJ0hIyvzwI6aYJsnOew cCiCN7FeKJ/oA1RSUemPGUcIJwQuZlTOiY0OcQ5PFkV5YxMUX1F/aTYXROXgTmSaw0aC1Jpo w7Ss1mg4SIP/tR88/d1+HwkJDVW1RSxC1PWzGizwRv8eauImGdpNnseneO2BNWRXTJumAWDD pYxpGSsGHXuZXTPZqOOZpsHtInFyi5KRHSFyk2Xigzvh3b9WqhbgHHHE4PUVw0I5sIQt8hJq 5nH5dPqz4ITtCL9zjiJsExHuHKN3NZsAEQEAAcLAXwQYAQIACQUCU4xwFgIbDAAKCRCw3p3W KL8TL0P4B/9YWver5uD/y/m0KScK2f3Z3mXJhME23vGBbMNlfwbr+meDMrJZ950CuWWnQ+d+ Ahe0w1X7e3wuLVODzjcReQ/v7b4JD3wwHxe+88tgB9byc0NXzlPJWBaWV01yB2/uefVKryAf AHYEd0gCRhx7eESgNBe3+YqWAQawunMlycsqKa09dBDL1PFRosF708ic9346GLHRc6Vj5SRA UTHnQqLetIOXZm3a2eQ1gpQK9MmruO86Vo93p39bS1mqnLLspVrL4rhoyhsOyh0Hd28QCzpJ wKeHTd0MAWAirmewHXWPco8p1Wg+V+5xfZzuQY0f4tQxvOpXpt4gQ1817GQ5/Ed/wsDtBBgB CAAgFiEEhRJncuj2BJSl0Jf3sN6d1ii/Ey8FAlrd8NACGwIAgQkQsN6d1ii/Ey92IAQZFggA HRYhBFMtsHpB9jjzHji4HoBcYbtP2GO+BQJa3fDQAAoJEIBcYbtP2GO+TYsA/30H/0V6cr/W V+J/FCayg6uNtm3MJLo4rE+o4sdpjjsGAQCooqffpgA+luTT13YZNV62hAnCLKXH9n3+ZAgJ RtAyDWk1B/0SMDVs1wxufMkKC3Q/1D3BYIvBlrTVKdBYXPxngcRoqV2J77lscEvkLNUGsu/z W2pf7+P3mWWlrPMJdlbax00vevyBeqtqNKjHstHatgMZ2W0CFC4hJ3YEetuRBURYPiGzuJXU pAd7a7BdsqWC4o+GTm5tnGrCyD+4gfDSpkOT53S/GNO07YkPkm/8J4OBoFfgSaCnQ1izwgJQ jIpcG2fPCI2/hxf2oqXPYbKr1v4Z1wthmoyUgGN0LPTIm+B5vdY82wI5qe9uN6UOGyTH2B3p hRQUWqCwu2sqkI3LLbTdrnyDZaixT2T0f4tyF5Lfs+Ha8xVMhIyzNb1byDI5FKCb
  • Cc: boris.ostrovsky@xxxxxxxxxx, rusty@xxxxxxxxxxxxxxx, peterz@xxxxxxxxxxxxx, mingo@xxxxxxxxxx, hpa@xxxxxxxxx, akataria@xxxxxxxxxx, tglx@xxxxxxxxxxxxx
  • Delivery-date: Fri, 24 Aug 2018 13:53:06 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
  • Openpgp: preference=signencrypt

On 13/08/18 09:37, Juergen Gross wrote:
> This series removes some no longer needed stuff from paravirt
> infrastructure and puts large quantities of paravirt ops under a new
> config option PARAVIRT_XXL which is selected by XEN_PV only.
> 
> A pvops kernel without XEN_PV being configured is about 2.5% smaller
> with this series applied.
> 
> tip commit 5800dc5c19f34e6e03b5adab1282535cb102fafd ("x86/paravirt:
> Fix spectre-v2 mitigations for paravirt guests") is a prerequisite
> for this series.
> 
> The last 4 patches of this series require my Xen cleanup series
> https://lore.kernel.org/lkml/20180717120113.12756-1-jgross@xxxxxxxx/
> which hides more Xen PV-only code behind CONFIG_XEN_PV.
> 
> Changes in V2:
> - patch 4: shorten pv_ops sub-structure names (Jan Beulich)
> - patch 11: new patch
> 
> Juergen Gross (11):
>   x86/paravirt: make paravirt_patch_call() and paravirt_patch_jmp()
>     static
>   x86/paravirt: remove clobbers parameter from paravirt patch functions
>   x86/paravirt: remove clobbers from struct paravirt_patch_site
>   x86/paravirt: use a single ops structure
>   x86/paravirt: remove unused paravirt bits
>   x86/paravirt: introduce new config option PARAVIRT_XXL
>   x86/paravirt: move items in pv_info under PARAVIRT_XXL umbrella
>   x86/paravirt: move the Xen-only pv_cpu_ops under the PARAVIRT_XXL
>     umbrella
>   x86/paravirt: move the Xen-only pv_irq_ops under the PARAVIRT_XXL
>     umbrella
>   x86/paravirt: move the Xen-only pv_mmu_ops under the PARAVIRT_XXL
>     umbrella
>   x86/paravirt: remove unneeded mmu related paravirt ops bits
> 
>  arch/x86/Kconfig                            |   3 +
>  arch/x86/hyperv/mmu.c                       |   4 +-
>  arch/x86/include/asm/debugreg.h             |   2 +-
>  arch/x86/include/asm/desc.h                 |   4 +-
>  arch/x86/include/asm/fixmap.h               |   2 +-
>  arch/x86/include/asm/irqflags.h             |  56 ++--
>  arch/x86/include/asm/mmu_context.h          |   4 +-
>  arch/x86/include/asm/msr.h                  |   4 +-
>  arch/x86/include/asm/paravirt.h             | 399 
> +++++++++++++---------------
>  arch/x86/include/asm/paravirt_types.h       |  77 +++---
>  arch/x86/include/asm/pgalloc.h              |   2 +-
>  arch/x86/include/asm/pgtable-3level_types.h |   2 +-
>  arch/x86/include/asm/pgtable.h              |   7 +-
>  arch/x86/include/asm/processor.h            |   4 +-
>  arch/x86/include/asm/ptrace.h               |   3 +-
>  arch/x86/include/asm/segment.h              |   2 +-
>  arch/x86/include/asm/special_insns.h        |   4 +-
>  arch/x86/kernel/alternative.c               |   2 +-
>  arch/x86/kernel/asm-offsets.c               |  13 +-
>  arch/x86/kernel/asm-offsets_64.c            |   9 +-
>  arch/x86/kernel/cpu/common.c                |   4 +-
>  arch/x86/kernel/cpu/vmware.c                |   4 +-
>  arch/x86/kernel/head_64.S                   |   2 +-
>  arch/x86/kernel/kvm.c                       |  17 +-
>  arch/x86/kernel/kvmclock.c                  |   4 +-
>  arch/x86/kernel/paravirt-spinlocks.c        |  15 +-
>  arch/x86/kernel/paravirt.c                  | 292 ++++++++++----------
>  arch/x86/kernel/paravirt_patch_32.c         |  57 ++--
>  arch/x86/kernel/paravirt_patch_64.c         |  65 ++---
>  arch/x86/kernel/tsc.c                       |   2 +-
>  arch/x86/kernel/vsmp_64.c                   |  24 +-
>  arch/x86/xen/Kconfig                        |   1 +
>  arch/x86/xen/enlighten_pv.c                 |  31 ++-
>  arch/x86/xen/irq.c                          |   2 +-
>  arch/x86/xen/mmu_hvm.c                      |   2 +-
>  arch/x86/xen/mmu_pv.c                       |  28 +-
>  arch/x86/xen/spinlock.c                     |  11 +-
>  arch/x86/xen/time.c                         |   4 +-
>  drivers/xen/time.c                          |   2 +-
>  39 files changed, 575 insertions(+), 595 deletions(-)
> 

Ping?


Juergen

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