diff options
Diffstat (limited to 'emulators/kqemu-kmod-devel/files/extra-patch-jk-200905-01')
| -rw-r--r-- | emulators/kqemu-kmod-devel/files/extra-patch-jk-200905-01 | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/emulators/kqemu-kmod-devel/files/extra-patch-jk-200905-01 b/emulators/kqemu-kmod-devel/files/extra-patch-jk-200905-01 deleted file mode 100644 index 37c7e0c0ba0c..000000000000 --- a/emulators/kqemu-kmod-devel/files/extra-patch-jk-200905-01 +++ /dev/null @@ -1,51 +0,0 @@ -From: jan.kiszka@siemens.com (Jan Kiszka) -Subject: [Qemu-devel] [PATCH 1/5] kqemu: x86-64: Run 16-bit-stack-return in - ring 0 -Date: Fri, 29 May 2009 19:18:31 +0200 -Message-ID: <20090529171831.14265.89986.stgit@mchn012c.ww002.siemens.net> -To: qemu-devel@nongnu.org - -The fix-up code for returning to 16 bit stack segments is currently -executed in ring 1. This has the side effect that the interrupt flag -remains cleared on return from ring 1 to the guest's ring 3 as its -IOPL is 0 (ie. iret can only modify IF when run in ring 0). - -Fix this by moving the 32 bit return trampoline into ring 0. - -Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> ---- - - common/kernel.c | 8 ++++---- - 1 files changed, 4 insertions(+), 4 deletions(-) - -diff --git common/kernel.c common/kernel.c -index 6a88452..1d7a69e 100644 -Index: common/kernel.c ---- common/kernel.c -+++ common/kernel.c -@@ -422,8 +422,8 @@ struct kqemu_state *kqemu_init(struct kqemu_init *d, - #ifdef __x86_64__ - s->monitor_ds_sel = 0; /* no need for a specific data segment */ - /* used for 16 bit esp fix */ -- s->monitor_cs32_sel = (s->monitor_selector_base + (7 << 3)) | 1; -- s->monitor_ss16_sel = (s->monitor_selector_base + (6 << 3)) | 1; -+ s->monitor_cs32_sel = s->monitor_selector_base + (7 << 3); -+ s->monitor_ss16_sel = s->monitor_selector_base + (6 << 3); - s->monitor_ss_null_sel = (s->monitor_selector_base + (1 << 3)) | 3; - #else - s->monitor_ds_sel = s->monitor_selector_base + (1 << 3); -@@ -495,9 +495,9 @@ struct kqemu_state *kqemu_init(struct kqemu_init *d, - 0, 0xfffff, 0xa09a); /* long mode segment */ - set_seg((uint32_t *)(dt_table + (s->monitor_ss16_sel >> 3)), - (s->monitor_data_vaddr + offsetof(struct kqemu_state, stack)) & ~0xffff, -- 0xffff, 0x00b2); /* SS16 segment for 16 bit ESP fix */ -+ 0xffff, 0x0092); /* SS16 segment for 16 bit ESP fix */ - set_seg((uint32_t *)(dt_table + (s->monitor_cs32_sel >> 3)), -- 0, 0xfffff, 0xc0ba); /* CS32 segment for 16 bit ESP fix */ -+ 0, 0xfffff, 0xc09a); /* CS32 segment for 16 bit ESP fix */ - set_seg((uint32_t *)(dt_table + (s->monitor_ss_null_sel >> 3)), - 0, 0, 0x40f2); /* substitute for null SS segment */ - #else - - - |