search for: extable

...: Joerg Roedel <jroedel at suse.de> --- arch/x86/include/asm/segment.h | 2 +- arch/x86/include/asm/sev-es.h | 1 + arch/x86/kernel/head64.c | 6 ++ arch/x86/kernel/sev-es-shared.c | 14 ++-- arch/x86/kernel/sev-es.c | 116 ++++++++++++++++++++++++++++++++ arch/x86/mm/extable.c | 1 + 6 files changed, 132 insertions(+), 8 deletions(-) diff --git a/arch/x86/include/asm/segment.h b/arch/x86/include/asm/segment.h index 6669164abadc..5b648066504c 100644 --- a/arch/x86/include/asm/segment.h +++ b/arch/x86/include/asm/segment.h @@ -230,7 +230,7 @@ #define NUM_EX...

...h/x86/include/asm/sev-es.h | 2 + arch/x86/kernel/Makefile | 2 + arch/x86/kernel/head64.c | 11 +++ arch/x86/kernel/head_64.S | 34 ++++++++++ arch/x86/kernel/sev-es-shared.c | 14 ++-- arch/x86/kernel/sev-es.c | 116 ++++++++++++++++++++++++++++++++ arch/x86/mm/extable.c | 1 + 9 files changed, 177 insertions(+), 8 deletions(-) diff --git a/arch/x86/include/asm/realmode.h b/arch/x86/include/asm/realmode.h index b35030eeec36..96118fb041b8 100644 --- a/arch/x86/include/asm/realmode.h +++ b/arch/x86/include/asm/realmode.h @@ -57,6 +57,9 @@ extern unsign...

...tcorp.com.au> Signed-off-by: Zachary Amsden <zach@vmware.com> Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com> --- arch/i386/kernel/entry.S | 9 +++++---- arch/i386/kernel/process.c | 2 +- arch/i386/mm/extable.c | 2 +- arch/i386/mm/fault.c | 11 ++++------- include/asm-i386/ptrace.h | 5 +++-- include/asm-i386/segment.h | 12 ++++++++++++ 6 files changed, 26 insertions(+), 15 deletions(-) --- 2.6.18-rc3-32.orig/arch/i386/kernel/entry.S +++ 2.6.18-rc3-32/arch/i386/kernel/entry.S @@...

...tcorp.com.au> Signed-off-by: Zachary Amsden <zach@vmware.com> Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com> --- arch/i386/kernel/entry.S | 9 +++++---- arch/i386/kernel/process.c | 2 +- arch/i386/mm/extable.c | 2 +- arch/i386/mm/fault.c | 11 ++++------- include/asm-i386/ptrace.h | 5 +++-- include/asm-i386/segment.h | 12 ++++++++++++ 6 files changed, 26 insertions(+), 15 deletions(-) --- 2.6.18-rc3-32.orig/arch/i386/kernel/entry.S +++ 2.6.18-rc3-32/arch/i386/kernel/entry.S @@...

...ernel/profile.o kernel/exit.o kernel/itimer.o kernel/time.o kernel/softirq.o kernel/resource.o kernel/sysctl.o kernel/capability.o kernel/ptrace.o kernel/timer.o kernel/user.o kernel/user_namespace.o kernel/signal.o kernel/sys.o kernel/kmod.o kernel/workqueue.o kernel/pid.o kernel/rcupdate.o kernel/extable.o kernel/params.o kernel/posix-timers.o kernel/kthread.o kernel/wait.o kernel/kfifo.o kernel/sys_ni.o kernel/posix-cpu-timers.o kernel/mutex.o kernel/hrtimer.o kernel/rwsem.o kernel/latency.o kernel/nsproxy.o kernel/srcu.o kernel/die_notifier.o kernel/utsname.o kernel/time/built-in.o kernel/futex.o...

...- Fix commit quoting style (per Peter Zijlstra) Masahiro Yamada (12): Revert "x86/jump-labels: Macrofy inline assembly code to work around GCC inlining bugs" Revert "x86/cpufeature: Macrofy inline assembly code to work around GCC inlining bugs" Revert "x86/extable: Macrofy inline assembly code to work around GCC inlining bugs" Revert "x86/paravirt: Work around GCC inlining bugs when compiling paravirt ops" Revert "x86/bug: Macrofy the BUG table section handling, to work around GCC inlining bugs" Revert "x86/alt...

...- Fix commit quoting style (per Peter Zijlstra) Masahiro Yamada (12): Revert "x86/jump-labels: Macrofy inline assembly code to work around GCC inlining bugs" Revert "x86/cpufeature: Macrofy inline assembly code to work around GCC inlining bugs" Revert "x86/extable: Macrofy inline assembly code to work around GCC inlining bugs" Revert "x86/paravirt: Work around GCC inlining bugs when compiling paravirt ops" Revert "x86/bug: Macrofy the BUG table section handling, to work around GCC inlining bugs" Revert "x86/alt...

...0186a91 -> ffff82c4c0218daa > (XEN) traps.c:3061: GPF (0000): ffff82c4c0186a91 -> ffff82c4c0218daa > > Can at least the left side address please be associated back with a > symbol (with the help of xen-syms perhaps)? As this is a debug message anyway, it would be sensible for the extable handler to print %pS of the left hand address. It would avoid needing to refer back to xen-syms in cases like this. ~Andrew

...macros for inline asm > x86: objtool: use asm macro for better compiler decisions > x86: refcount: prevent gcc distortions > x86: alternatives: macrofy locks for better inlining > x86: bug: prevent gcc distortions > x86: prevent inline distortion by paravirt ops > x86: extable: use macros instead of inline assembly > x86: cpufeature: use macros instead of inline assembly > x86: jump-labels: use macros instead of inline assembly > > Makefile | 9 ++- > arch/x86/Makefile | 11 ++- > arch/x86/includ...

...diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 7cdfb7113811..d83c62ebaa85 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -36,6 +36,8 @@ #include <asm/microcode.h> #include <asm/kasan.h> #include <asm/fixmap.h> +#include <asm/extable.h> +#include <asm/trap_defs.h> /* * Manage page tables very early on. @@ -377,6 +379,24 @@ int __init early_make_pgtable(unsigned long address) return __early_make_pgtable(address, pmd); } +void __init early_exception(struct pt_regs *regs, int trapnr) +{ + unsigned long cr2; + in...

...b/arch/x86/kernel/head64.c > index 7cdfb7113811..d83c62ebaa85 100644 > --- a/arch/x86/kernel/head64.c > +++ b/arch/x86/kernel/head64.c > @@ -36,6 +36,8 @@ > #include <asm/microcode.h> > #include <asm/kasan.h> > #include <asm/fixmap.h> > +#include <asm/extable.h> > +#include <asm/trap_defs.h> > > /* > * Manage page tables very early on. > @@ -377,6 +379,24 @@ int __init early_make_pgtable(unsigned long address) > return __early_make_pgtable(address, pmd); > } > > +void __init early_exception(struct pt_regs...

So in the page fault handler, we have some tests against kernel / user CS which avoid the logic of actually figuring out the segment limit. I propose we use the same trick as arch/i386/mm/extable.c, which simply masks the RPL off and combines the segments together to test for faults before setting the pnp_bios_is_utter_crap variable. In this case, we can simply test: if (likely((seg & 0xe8) == __KERNEL_CS) and be done with any RPL masking at all. Perhaps this is best put in a ma...

...nable(); +} diff --git a/lib/Makefile b/lib/Makefile index d11c48e..08a8183 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -19,7 +19,7 @@ KCOV_INSTRUMENT_dynamic_debug.o := n lib-y := ctype.o string.o vsprintf.o cmdline.o \ rbtree.o radix-tree.o dump_stack.o timerqueue.o\ - idr.o int_sqrt.o extable.o \ + idr.o xbitmap.o int_sqrt.o extable.o \ sha1.o chacha20.o irq_regs.o argv_split.o \ flex_proportions.o ratelimit.o show_mem.o \ is_single_threaded.o plist.o decompress.o kobject_uevent.o \ diff --git a/lib/radix-tree.c b/lib/radix-tree.c index c8d5556..2650e9e 100644 --- a/lib/radix-...

...points for #VC handler */ +extern void vc_no_ghcb(void); + #endif diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 4282dac694c3..621b5e8aef4c 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -40,6 +40,7 @@ #include <asm/desc.h> #include <asm/extable.h> #include <asm/trapnr.h> +#include <asm/sev-es.h> /* * Manage page tables very early on. @@ -540,10 +541,29 @@ static struct desc_ptr bringup_idt_descr = { .address = 0, /* Set at runtime */ }; +#ifdef CONFIG_AMD_MEM_ENCRYPT +static void set_bringup_idt_handler(int n, vo...

...nable(); +} diff --git a/lib/Makefile b/lib/Makefile index d11c48e..08a8183 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -19,7 +19,7 @@ KCOV_INSTRUMENT_dynamic_debug.o := n lib-y := ctype.o string.o vsprintf.o cmdline.o \ rbtree.o radix-tree.o dump_stack.o timerqueue.o\ - idr.o int_sqrt.o extable.o \ + idr.o xbitmap.o int_sqrt.o extable.o \ sha1.o chacha20.o irq_regs.o argv_split.o \ flex_proportions.o ratelimit.o show_mem.o \ is_single_threaded.o plist.o decompress.o kobject_uevent.o \ diff --git a/lib/radix-tree.c b/lib/radix-tree.c index c8d5556..7000ad6 100644 --- a/lib/radix-...

...el/exit.o kernel/itimer.o kernel/time.o kernel/softirq.o > kernel/resource.o kernel/sysctl.o kernel/capability.o kernel/ptrace.o > kernel/timer.o kernel/user.o kernel/user_namespace.o kernel/signal.o > kernel/sys.o kernel/kmod.o kernel/workqueue.o kernel/pid.o > kernel/rcupdate.o kernel/extable.o kernel/params.o > kernel/posix-timers.o kernel/kthread.o kernel/wait.o kernel/kfifo.o > kernel/sys_ni.o kernel/posix-cpu-timers.o kernel/mutex.o > kernel/hrtimer.o kernel/rwsem.o kernel/latency.o kernel/nsproxy.o > kernel/srcu.o kernel/die_notifier.o kernel/utsname.o > kernel/time/...

...ds32__tlbop_rwr(pteval); \ + __nds32__isb(); \ + } while (0) + +#define arch_kmap_local_pre_unmap(vaddr) \ + do { \ + __nds32__tlbop_inv(vaddr); \ + __nds32__isb(); \ + } while (0) #endif --- a/arch/nds32/mm/Makefile +++ b/arch/nds32/mm/Makefile @@ -3,7 +3,6 @@ obj-y := extable.o tlb.o fault.o init mm-nds32.o cacheflush.o proc.o obj-$(CONFIG_ALIGNMENT_TRAP) += alignment.o -obj-$(CONFIG_HIGHMEM) += highmem.o ifdef CONFIG_FUNCTION_TRACER CFLAGS_REMOVE_proc.o = $(CC_FLAGS_FTRACE) --- a/arch/nds32/mm/highmem.c +++ /dev/...

...} + +#endif diff --git a/lib/Makefile b/lib/Makefile index dafa796..082361b 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -18,7 +18,7 @@ KCOV_INSTRUMENT_dynamic_debug.o := n lib-y := ctype.o string.o vsprintf.o cmdline.o \ rbtree.o radix-tree.o dump_stack.o timerqueue.o\ - idr.o int_sqrt.o extable.o \ + idr.o xbitmap.o int_sqrt.o extable.o \ sha1.o chacha20.o irq_regs.o argv_split.o \ flex_proportions.o ratelimit.o show_mem.o \ is_single_threaded.o plist.o decompress.o kobject_uevent.o \ diff --git a/lib/radix-tree.c b/lib/radix-tree.c index 8b1feca..269a5cc 100644 --- a/lib/radix-...

...nts for #VC handler */ +extern void vc_no_ghcb(void); + #endif diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 41514ec1e6f0..250fae33bf66 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -39,6 +39,7 @@ #include <asm/realmode.h> #include <asm/extable.h> #include <asm/trapnr.h> +#include <asm/sev-es.h> /* * Manage page tables very early on. diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index 4622940134a5..12bf6f11fd83 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -95,6 +95,13...

...e is still > > unneeded, and the conversion to STATIC_BRANCH_{NOP,JUMP} should > > be kept. > > > > [2] d5a581d84ae6 ("x86/cpufeature: Macrofy inline assembly code to > > work around GCC inlining bugs") > > > > [3] 0474d5d9d2f7 ("x86/extable: Macrofy inline assembly code to work > > around GCC inlining bugs") > > > > [4] 494b5168f2de ("x86/paravirt: Work around GCC inlining bugs when > > compiling paravirt ops") > > > > [5] f81f8ad56fd1 ("x86/bug: Macrofy the BUG table secti...