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xen: update to 4.7.2.

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This commit is contained in:
Juan RP 2017-04-03 16:55:57 +02:00
parent 565103d569
commit e30a95136a
2 changed files with 3 additions and 58 deletions
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55
srcpkgs/xen/patches/xsa200-4.7.patch
View file

@ -1,55 +0,0 @@
From: Jan Beulich <jbeulich@suse.com>
Subject: x86emul: CMPXCHG8B ignores operand size prefix
Otherwise besides mis-handling the instruction, the comparison failure
case would result in uninitialized stack data being handed back to the
guest in rDX:rAX (32 bits leaked for 32-bit guests, 96 bits for 64-bit
ones).
This is XSA-200.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
--- a/tools/tests/x86_emulator/test_x86_emulator.c
+++ b/tools/tests/x86_emulator/test_x86_emulator.c
@@ -435,6 +435,24 @@ int main(int argc, char **argv)
goto fail;
printf("okay\n");
+ printf("%-40s", "Testing cmpxchg8b (%edi) [opsize]...");
+ instr[0] = 0x66; instr[1] = 0x0f; instr[2] = 0xc7; instr[3] = 0x0f;
+ res[0] = 0x12345678;
+ res[1] = 0x87654321;
+ regs.eflags = 0x200;
+ regs.eip = (unsigned long)&instr[0];
+ regs.edi = (unsigned long)res;
+ rc = x86_emulate(&ctxt, &emulops);
+ if ( (rc != X86EMUL_OKAY) ||
+ (res[0] != 0x12345678) ||
+ (res[1] != 0x87654321) ||
+ (regs.eax != 0x12345678) ||
+ (regs.edx != 0x87654321) ||
+ ((regs.eflags&0x240) != 0x200) ||
+ (regs.eip != (unsigned long)&instr[4]) )
+ goto fail;
+ printf("okay\n");
+
printf("%-40s", "Testing movsxbd (%%eax),%%ecx...");
instr[0] = 0x0f; instr[1] = 0xbe; instr[2] = 0x08;
regs.eflags = 0x200;
--- a/xen/arch/x86/x86_emulate/x86_emulate.c
+++ b/xen/arch/x86/x86_emulate/x86_emulate.c
@@ -4775,8 +4775,12 @@ x86_emulate(
generate_exception_if((modrm_reg & 7) != 1, EXC_UD, -1);
generate_exception_if(ea.type != OP_MEM, EXC_UD, -1);
if ( op_bytes == 8 )
+ {
host_and_vcpu_must_have(cx16);
- op_bytes *= 2;
+ op_bytes = 16;
+ }
+ else
+ op_bytes = 8;
/* Get actual old value. */
if ( (rc = ops->read(ea.mem.seg, ea.mem.off, old, op_bytes,

6
srcpkgs/xen/template
View file

@ -1,13 +1,13 @@
# Template file for 'xen' # Template file for 'xen'
pkgname=xen pkgname=xen
version=4.7.1 version=4.7.2
revision=2 revision=1
short_desc="The Xen hypervisor utilities" short_desc="The Xen hypervisor utilities"
maintainer="Juan RP <xtraeme@voidlinux.eu>" maintainer="Juan RP <xtraeme@voidlinux.eu>"
homepage="http://xen.org" homepage="http://xen.org"
license="GPL-2" license="GPL-2"
distfiles="http://bits.xensource.com/oss-xen/release/$version/xen-$version.tar.gz" distfiles="http://bits.xensource.com/oss-xen/release/$version/xen-$version.tar.gz"
checksum=e87f4b0575e78657ee23d31470a15ecf1ce8c3a92a771cda46bbcd4d0d671ffe checksum=61494a56d9251e2108080f95b0dc8e3d175f1ba4da34603fc07b91cfebf358d5
patch_args="-Np1" patch_args="-Np1"
only_for_archs="x86_64 x86_64-musl" only_for_archs="x86_64 x86_64-musl"