git: nvmm(4): Optimize the WCR8 intercept on SVM

[Aaron LI]

commit f809bb0e5f9a9519193dc8b1b3f61f4485ed0228
Author: Aaron LI <aly at aaronly.me>
Date:   Sun Aug 30 14:09:13 2026 +0800

    nvmm(4): Optimize the WCR8 intercept on SVM
    
    Establish it only on demand, not by default. This saves one branch
    in svm_exit_wcr8(), which is a bit of a hot path on Windows guests.
    
    Add a unit test for it.
    
    Obtained-from: NVMM Reference Implementation

Summary of changes:
 sys/dev/virtual/nvmm/x86/nvmm_x86_svm.c            |  42 +--
 test/testcases/libnvmm/Makefile                    |   2 +-
 test/testcases/libnvmm/dfregress.run               |   1 +
 test/testcases/libnvmm/{h_io_assist.c => h_misc.c} | 291 +++++++++------------
 .../libnvmm/{h_io_assist => h_misc}/Makefile       |   4 +-
 .../common.h => testcases/libnvmm/h_misc_asm.S}    |  29 +-
 6 files changed, 163 insertions(+), 206 deletions(-)
 copy test/testcases/libnvmm/{h_io_assist.c => h_misc.c} (61%)
 copy test/testcases/libnvmm/{h_io_assist => h_misc}/Makefile (61%)
 copy test/{nvmm/demo/toyvirt/common.h => testcases/libnvmm/h_misc_asm.S} (73%)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/f809bb0e5f9a9519193dc8b1b3f61f4485ed0228


-- 
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