From: Paolo Bonzini <pbonzini@redhat.com>
To: qemu-devel@nongnu.org
Subject: [PULL 06/13] target/i386: tcg: fix switching from 16-bit to 32-bit tasks or vice versa
Date: Fri, 4 Jun 2021 17:17:38 +0200 [thread overview]
Message-ID: <20210604151745.310318-7-pbonzini@redhat.com> (raw)
In-Reply-To: <20210604151745.310318-1-pbonzini@redhat.com>
The format of the task state segment is governed by bit 3 in the
descriptor type field. On a task switch, the format for saving
is given by the current value of TR's type field, while the
format for loading is given by the new descriptor.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
target/i386/tcg/seg_helper.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target/i386/tcg/seg_helper.c b/target/i386/tcg/seg_helper.c
index 2112c5fc51..3ed20ca31d 100644
--- a/target/i386/tcg/seg_helper.c
+++ b/target/i386/tcg/seg_helper.c
@@ -319,7 +319,7 @@ static void switch_tss_ra(CPUX86State *env, int tss_selector,
}
/* save the current state in the old TSS */
- if (type & 8) {
+ if (old_type & 8) {
/* 32 bit */
cpu_stl_kernel_ra(env, env->tr.base + 0x20, next_eip, retaddr);
cpu_stl_kernel_ra(env, env->tr.base + 0x24, old_eflags, retaddr);
--
2.31.1
next prev parent reply other threads:[~2021-06-04 15:24 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-04 15:17 [PULL 00/13] Misc bugfix patches for 2021-06-04 Paolo Bonzini
2021-06-04 15:17 ` [PULL 01/13] meson: allow optional dependencies for block modules Paolo Bonzini
2021-06-04 15:17 ` [PULL 02/13] iscsi: link libm into the module Paolo Bonzini
2021-06-04 15:17 ` [PULL 03/13] oslib-posix: Remove OpenBSD workaround for fcntl("/dev/null", F_SETFL, O_NONBLOCK) failure Paolo Bonzini
2021-06-04 15:17 ` [PULL 04/13] target/i386: tcg: fix segment register offsets for 16-bit TSS Paolo Bonzini
2021-06-04 15:17 ` [PULL 05/13] target/i386: tcg: fix loading of registers from " Paolo Bonzini
2021-06-04 15:17 ` Paolo Bonzini [this message]
2021-06-04 15:17 ` [PULL 07/13] target/i386: Fix decode of cr8 Paolo Bonzini
2021-06-04 15:17 ` [PULL 08/13] tests/qtest/virtio-scsi-test: add unmap large LBA with 4k blocks test Paolo Bonzini
2021-06-04 15:17 ` [PULL 09/13] i386: reorder call to cpu_exec_realizefn Paolo Bonzini
2021-06-04 15:17 ` [PULL 10/13] i386: run accel_cpu_instance_init as post_init Paolo Bonzini
2021-06-04 15:17 ` [PULL 11/13] qemu-config: parse configuration files to a QDict Paolo Bonzini
2021-06-04 15:17 ` [PULL 12/13] vl: plumb keyval-based options into -readconfig Paolo Bonzini
2021-06-29 12:52 ` Peter Maydell
2021-06-04 15:17 ` [PULL 13/13] vl: plug -object back " Paolo Bonzini
2021-06-05 10:25 ` [PULL 00/13] Misc bugfix patches for 2021-06-04 Peter Maydell
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