Displaying 4 results from an estimated 4 matches for "restore_fpu_check".
Xen PV ABI on FPU doesn't match with pvops kernel FPU code, reducing to a serious memory data damage
2013 Nov 07
0
Xen PV ABI on FPU doesn't match with pvops kernel FPU code, reducing to a serious memory data damage
...*/
do_group_exit(SIGKILL);
return;
}
local_irq_disable(); <<<< Here it closes
}
__thread_fpu_begin(tsk);
/*
* Paranoid restore. send a SIGSEGV if we fail to restore the state.
*/
if (unlikely(restore_fpu_checking(tsk))) {
drop_init_fpu(tsk);
force_sig(SIGSEGV, tsk);
return;
}
tsk->fpu_counter++;
}
]
This can cause serious data damage against xen pv guests (including
dom0 kernel), we have encountered this issue both in stress test and
production systems. Please take a...
Xen PV ABI on FPU doesn't match with pvops kernel FPU code, reducing to a serious memory data damage
2013 Nov 07
0
Xen PV ABI on FPU doesn't match with pvops kernel FPU code, reducing to a serious memory data damage
...*/
do_group_exit(SIGKILL);
return;
}
local_irq_disable(); <<<< Here it closes
}
__thread_fpu_begin(tsk);
/*
* Paranoid restore. send a SIGSEGV if we fail to restore the state.
*/
if (unlikely(restore_fpu_checking(tsk))) {
drop_init_fpu(tsk);
force_sig(SIGSEGV, tsk);
return;
}
tsk->fpu_counter++;
}
]
This can cause serious data damage against xen pv guests (including
dom0 kernel), we have encountered this issue both in stress test and
production systems. Please take a...
2012 Jun 29
0
[PATCH] linux-2.6.18/x86: improve CR0 read/write handling
...truct task_struct *me = current;
- /* clts(); */ /* ''clts'' is done for us by Xen during virtual trap. */
+ /* NB. ''clts'' is done for us by Xen during virtual trap. */
+ __get_cpu_var(xen_x86_cr0) &= ~X86_CR0_TS;
if (!used_math())
init_fpu(me);
restore_fpu_checking(&me->thread.i387.fxsave);
--- a/include/asm-i386/mach-xen/asm/system.h
+++ b/include/asm-i386/mach-xen/asm/system.h
@@ -2,8 +2,10 @@
#define __ASM_SYSTEM_H
#include <linux/kernel.h>
+#include <linux/threads.h>
#include <asm/segment.h>
#include <asm/cpufeature.h&...
2006 Jul 26
5
linux-2.6-xen.hg
Hi,
Is the http://xenbits.xensource.com/linux-2.6-xen.hg tree still being
updated? if not, what''s the preferred Linux tree to track that has all
of the Xen bits?
Thanks,
Muli
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