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opengnsys_ipxe
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Michael Brown bcfaf119a7 [librm] Speed up protected-mode calls under KVM 
When making a call from real mode to protected mode, we save and
restore the global and interrupt descriptor table registers.  The
restore currently takes place after returning to real mode, which
generates two EXCEPTION_NMIs and corresponding VM exits when running
under KVM on an Intel CPU.

Avoid the VM exits by restoring the descriptor table registers inside
prot_to_real, while still running in protected mode.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
 		2014-05-02 21:00:53 +01:00
..
arch [librm] Speed up protected-mode calls under KVM 2014-05-02 21:00:53 +01:00
bin Rename .cvsignore files to .gitignore 2007-06-09 22:57:00 +01:00
config [cmdline] Add "profstat" command to display profiling statistics 2014-04-27 23:14:47 +01:00
core [librm] Allow interrupts in protected mode 2014-04-29 18:24:04 +01:00
crypto [crypto] Allow wildcard matches on commonName as well as subjectAltName 2014-04-01 11:36:11 +01:00
doc [build] Rename gPXE to iPXE 2010-04-19 23:43:39 +01:00
drivers [intel] Push new RX descriptors in batches 2014-04-27 23:14:48 +01:00
hci [cmdline] Add "profstat" command to display profiling statistics 2014-04-27 23:14:47 +01:00
image [efi] Disable SNP devices when running iPXE as the application 2014-03-14 17:09:51 +00:00
include [build] Allow for a debug level of zero 2014-04-28 14:45:47 +01:00
interface [efi] Disable SNP devices when running iPXE as the application 2014-03-14 17:09:51 +00:00
libgcc [build] Mark __intel_new_proc_init with __libgcc rather than cdecl 2009-08-03 15:56:10 +01:00
net [http] Profile receive datapath 2014-04-28 12:31:23 +01:00
tests [test] Print out profiling statistics after a successful test run 2014-05-02 15:23:20 +01:00
usr [cmdline] Add "profstat" command to display profiling statistics 2014-04-27 23:14:47 +01:00
util [build] Fix LABEL name for .liso images 2013-12-06 17:12:57 +00:00
.gitignore [build] Add support for local configuration files 2010-03-26 19:07:22 +00:00
Makefile [crypto] Generalise X.509 cache to a full certificate store 2014-03-28 17:09:40 +00:00
Makefile.housekeeping [build] Allow for a debug level of zero 2014-04-28 14:45:47 +01:00
doxygen.cfg [build] Remove PACKED macro 2010-05-29 23:49:47 +01:00