search for: gsbase

...#include <asm/kasan.h> #include <asm/fixmap.h> +#include <asm/realmode.h> /* * Manage page tables very early on. @@ -513,6 +514,8 @@ void __init x86_64_start_reservations(char *real_mode_data) */ void __head startup_64_setup_env(unsigned long physbase) { + unsigned long gsbase; + /* Load GDT */ startup_gdt_descr.address = (unsigned long)fixup_pointer(startup_gdt, physbase); native_load_gdt(&startup_gdt_descr); @@ -521,4 +524,8 @@ void __head startup_64_setup_env(unsigned long physbase) asm volatile("movl %%eax, %%ds\n" "movl %%eax, %%ss...

...#include <asm/kasan.h> #include <asm/fixmap.h> +#include <asm/realmode.h> /* * Manage page tables very early on. @@ -513,6 +514,8 @@ void __init x86_64_start_reservations(char *real_mode_data) */ void __head startup_64_setup_env(unsigned long physbase) { + unsigned long gsbase; + /* Load GDT */ startup_gdt_descr.address = (unsigned long)fixup_pointer(startup_gdt, physbase); native_load_gdt(&startup_gdt_descr); @@ -521,4 +524,8 @@ void __head startup_64_setup_env(unsigned long physbase) asm volatile("movl %%eax, %%ds\n" "movl %%eax, %%ss...

...ot-CPU */ + tss_setup(cpu); load_TR_desc(); /* diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index ce2d8284edb9..b26a7f1bd6fe 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -545,3 +545,14 @@ void __head startup_64_setup_env(unsigned long physbase) gsbase = (unsigned long)fixup_pointer((void *)initial_gs, physbase); __wrmsr(MSR_GS_BASE, (u32)gsbase, (u32)(gsbase >> 32)); } + +void __head early_load_tss(void) +{ + struct desc_struct *gdt = (struct desc_struct *)early_gdt_descr.address; + tss_desc tss; + + /* Load TSS only if entry in GDT is...

...= 0x0000 %gs = 0x0000 %ds = 0x0000 %es = 0x0000 %ss = 0x004b %rip = 0xfffffd7fff30826a libdtrace.so.1`dt_ident_cook+0x32 %rbp = 0xfffffd7fffdfeb10 %rsp = 0xfffffd7fffdfeae0 %rflags = 0x00010202 id=0 vip=0 vif=0 ac=0 vm=0 rf=1 nt=0 iopl=0x0 status=<of,df,IF,tf,sf,zf,af,pf,cf> %gsbase = 0x0000000000000000 %fsbase = 0xfffffd7ffef60200 %trapno = 0xe %err = 0x4 -- This message posted from opensolaris.org

Perhaps someone has ideas on this topic, a recent attempt to play with Xen was a reather unlucky event, all what I will be able to demonstrate on that system is a PV ONNV domU which ikely will not be very attractive to the audience :( HW: U40M2, 2 x 2 core AMD revF procs, 8GB MEM, Phonix BIOS 1.5 (latest) 1 x 200GB internal SATA drive SW: dom0 ONNV build 82, latest VirtManager from

......[snip]... (XEN) DebugCtl=0000000000000000 DebugExceptions=0000000000000000 (XEN) Interruptibility=0001 ActivityState=0000 (XEN) *** Host State *** (XEN) RSP = 0xffff828c8024ffa0 RIP = 0xffff828c801885b0 (XEN) CS=e008 DS=0000 ES=0000 FS=0000 GS=0000 SS=0000 TR=e040 (XEN) FSBase=0000000000000000 GSBase=0000000000000000 TRBase=ffff828c8028a200 (XEN) GDTBase=ffff828c800f3000 IDTBase=ffff828c8028db20 (XEN) CR0=000000008005003b CR3=00000001315b9000 CR4=00000000000026b0 (XEN) Sysenter RSP=ffff828c8024ffd0 CS:RIP=e008:ffff828c801af290 (XEN) *** Control State *** (XEN) PinBased=0000003f CPUBased=b6a1e7f...

ioemu-remote: The device model needs to write in the ACPI tables when it wakes up from S3 state. Signed-off-by: Jean Guyader <jean.guyader@eu.citrix.com> -- Jean Guyader _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

...c4.5/lib/gcc/x86_64-apple-darwin11.0.0/4.5.3/plugin/include/tree-flow.h:29: /sw/lib/gcc4.5/lib/gcc/x86_64-apple-darwin11.0.0/4.5.3/plugin/include/gimple.h:4376:24: warning: implicit truncation from 'int' to bitfield changes value from -32769 to 32767 [-Wconstant-conversion] gs->gsbase.subcode &= ~GF_PREDICT_TAKEN; ^ ~~~~~~~~~~~~~~~~~ /sw/src/fink.build/dragonegg-gcc45-3.0-1/dragonegg-3.0/src/Convert.cpp:429:64: error: too many arguments to function call, expected 3, have 4 ArgTypes, 3), Ops);...

...le-darwin11.0.0/4.5.3/plugin/include/tree-flow.h:29: > /sw/lib/gcc4.5/lib/gcc/x86_64-apple-darwin11.0.0/4.5.3/plugin/include/gimple.h:4376:24: > warning: implicit truncation from 'int' to bitfield changes value from > -32769 to > 32767 [-Wconstant-conversion] > gs->gsbase.subcode &= ~GF_PREDICT_TAKEN; > ^ ~~~~~~~~~~~~~~~~~ > /sw/src/fink.build/dragonegg-gcc45-3.0-1/dragonegg-3.0/src/Convert.cpp:429:64: > error: too many arguments to function call, expected 3, have 4 > ArgTypes...

...early too, before calling into any C code that has stack protector checks. - As a result I decided to move the setup code which is needed before the kernel switches to virtual addresses into a C function as well. This should be much easier to maintain. - paranoid_entry/exit now uses FSGSBASE instructions, so some refactoring was needed to make that work early for secondary CPUs too. - As a result, some state of the APs is now set up on the boot-cpu already, like the TSS and the CPU_NODE GDT entry, so that the AP only needs to load the descriptors to handle exceptions e...

From: Joerg Roedel <jroedel at suse.de> Hi, here is the new version of the SEV-ES client enabling patch-set. It is based on the latest tip/master branch and contains the necessary changes. In particular those ar: - Enabling CR4.FSGSBASE early on supported processors so that early #VC exceptions on APs can be handled. - Add another patch (patch 1) to fix a KVM frame-size build warning on 32bit. The previous versions can be found as a linked-list starting here: https://lore.kernel.org/lkml/20200724160336.5435-1-joro at 8b...

...fff7bb9c04f5e (XEN) DebugCtl=0000000000000000 DebugExceptions=0000000000000000 (XEN) Interruptibility=0000 ActivityState=0000 (XEN) *** Host State *** (XEN) RSP = 0xffff83043caa7f90 RIP = 0xffff82c4c01da730 (XEN) CS=e008 DS=0000 ES=0000 FS=0000 GS=0000 SS=0000 TR=e040 (XEN) FSBase=0000000000000000 GSBase=0000000000000000 TRBase=ffff83043cab9b00 (XEN) GDTBase=ffff83082d206000 IDTBase=ffff83082d212000 (XEN) CR0=000000008005003b CR3=000000042ffa0000 CR4=00000000000426f0 (XEN) Sysenter RSP=ffff83043caa7fc0 CS:RIP=e008:ffff82c4c0221af0 (XEN) Host PAT = 0x0000050100070406 (XEN) *** Control State *** (XEN...

Index: linux-2.6.16-rc5/Documentation/vmi_spec.txt =================================================================== --- linux-2.6.16-rc5.orig/Documentation/vmi_spec.txt 2006-03-09 23:33:29.000000000 -0800 +++ linux-2.6.16-rc5/Documentation/vmi_spec.txt 2006-03-10 12:55:29.000000000 -0800 @@ -0,0 +1,2197 @@ + + Paravirtualization API Version 2.0 + + Zachary Amsden, Daniel Arai, Daniel Hecht,

Index: linux-2.6.16-rc5/Documentation/vmi_spec.txt =================================================================== --- linux-2.6.16-rc5.orig/Documentation/vmi_spec.txt 2006-03-09 23:33:29.000000000 -0800 +++ linux-2.6.16-rc5/Documentation/vmi_spec.txt 2006-03-10 12:55:29.000000000 -0800 @@ -0,0 +1,2197 @@ + + Paravirtualization API Version 2.0 + + Zachary Amsden, Daniel Arai, Daniel Hecht,