Alexander Boettcher a2d57703b3 tcg/svm: use host cr4 during NPT page table walk ... During a page table walk of TCG+SVM the code in target/i386/excp_helper.c get_hphys() uses the cr4 register of the guest instead of the hypervisor to check for the PSE bit. In the test case we have, the guest have not enabled (yet) the PSE bit and so the page table walk results in a wrong host physical address resolution and wrong content read by the guest. Attached patch is against 4.2.1, but works also on 3.1.0. It fixes the issue for our automated testcase, which is a 32bit hypervisor w/o PAE support running a guest VM with tcg+svm. The test worked beforehand up to qemu 2.12, started to fail with qemu 3.0 and later. The added TCG/SVM NPT commit seems to introduce the regression. In case someone want to try to reproduce it, the iso is at [0], the good case is [1] and the failing case is [2]. The used commandline is: qemu-system-i386 -no-kvm -nographic -cpu phenom -m 512 -machine q35 -cdrom seoul-vmm-test.iso [0] https://depot.genode.org/alex-ab/images/seoul-vmm-test.iso [1] https://depot.genode.org/alex-ab/images/seoul-vmm-good.txt [2] https://depot.genode.org/alex-ab/images/seoul-vmm-bad.txt Signed-off-by: Alexander Boettcher <alexander.boettcher@genode-labs.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2020-07-10 18:02:14 -04:00
..
alpha	accel/tcg: Relax va restrictions on 64-bit guests	2020-05-15 15:25:16 +01:00
arm	error: Eliminate error_propagate() with Coccinelle, part 1	2020-07-10 15:18:08 +02:00
cris	x86 and machine queue for 5.0 soft freeze	2020-03-19 14:22:46 +00:00
hppa	softfloat: Name compare relation enum	2020-05-19 08:41:45 -07:00
i386	tcg/svm: use host cr4 during NPT page table walk	2020-07-10 18:02:14 -04:00
lm32	x86 and machine queue for 5.0 soft freeze	2020-03-19 14:22:46 +00:00
m68k	target/m68k: consolidate physical translation offset into get_physical_address()	2020-07-06 21:39:57 +02:00
microblaze	target/microblaze: monitor: Increase the number of registers reported	2020-05-14 16:01:02 +02:00
mips	hw/mips: Implement the kvm_type() hook in MachineClass	2020-06-27 19:35:39 +02:00
moxie	cpu: Use DeviceClass reset instead of a special CPUClass reset	2020-03-17 19:48:10 -04:00
nios2	x86 and machine queue for 5.0 soft freeze	2020-03-19 14:22:46 +00:00
openrisc	softfloat: Name compare relation enum	2020-05-19 08:41:45 -07:00
ppc	error: Eliminate error_propagate() with Coccinelle, part 1	2020-07-10 15:18:08 +02:00
riscv	target/riscv: configure and turn on vector extension from command line	2020-07-02 09:19:34 -07:00
rx	target/rx/translate: Add missing fall through comment	2020-04-07 18:45:54 -07:00
s390x	error: Eliminate error_propagate() with Coccinelle, part 1	2020-07-10 15:18:08 +02:00
sh4	gdbstub: Introduce gdb_get_float32() to get 32-bit float registers	2020-04-15 11:38:23 +01:00
sparc	error: Eliminate error_propagate() with Coccinelle, part 1	2020-07-10 15:18:08 +02:00
tilegx	cpu: Use DeviceClass reset instead of a special CPUClass reset	2020-03-17 19:48:10 -04:00
tricore	target/tricore: Implement gdbstub	2020-06-01 16:55:13 +02:00
unicore32	target/unicore32: Prefer qemu_semihosting_log_out() over curses	2020-06-09 19:58:53 +02:00
xtensa	target/xtensa fixes for 5.1:	2020-06-25 21:20:45 +01:00