aboutsummaryrefslogtreecommitdiffstats
path: root/meta/recipes-devtools/qemu/qemu/07-xen-pt-split-out-calculation-of-throughable-mask-CVE-2015-4106.patch
diff options
context:
space:
mode:
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/07-xen-pt-split-out-calculation-of-throughable-mask-CVE-2015-4106.patch')
-rw-r--r--meta/recipes-devtools/qemu/qemu/07-xen-pt-split-out-calculation-of-throughable-mask-CVE-2015-4106.patch265
1 files changed, 0 insertions, 265 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/07-xen-pt-split-out-calculation-of-throughable-mask-CVE-2015-4106.patch b/meta/recipes-devtools/qemu/qemu/07-xen-pt-split-out-calculation-of-throughable-mask-CVE-2015-4106.patch
deleted file mode 100644
index 28b75922d7..0000000000
--- a/meta/recipes-devtools/qemu/qemu/07-xen-pt-split-out-calculation-of-throughable-mask-CVE-2015-4106.patch
+++ /dev/null
@@ -1,265 +0,0 @@
-Upstream-Status: Backport
-
-Signed-off-by: Kai Kang <kai.kang@windriver.com>
-
-From 0e7ef22136955169a0fd03c4e41af95662352733 Mon Sep 17 00:00:00 2001
-From: Jan Beulich <jbeulich@suse.com>
-Date: Tue, 2 Jun 2015 15:07:01 +0000
-Subject: xen/pt: split out calculation of throughable mask in
- PCI config space handling
-Bug-Debian: http://bugs.debian.org/787547
-
-This is just to avoid having to adjust that calculation later in
-multiple places.
-
-Note that including ->ro_mask in get_throughable_mask()'s calculation
-is only an apparent (i.e. benign) behavioral change: For r/o fields it
-doesn't matter > whether they get passed through - either the same flag
-is also set in emu_mask (then there's no change at all) or the field is
-r/o in hardware (and hence a write won't change it anyway).
-
-This is a preparatory patch for XSA-131.
-
-Signed-off-by: Jan Beulich <jbeulich@suse.com>
-Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
-Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
----
- hw/xen/xen_pt_config_init.c | 51 ++++++++++++++++++---------------------------
- 1 file changed, 20 insertions(+), 31 deletions(-)
-
-diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c
-index 027ac32..3833b9e 100644
---- a/hw/xen/xen_pt_config_init.c
-+++ b/hw/xen/xen_pt_config_init.c
-@@ -95,6 +95,14 @@ XenPTReg *xen_pt_find_reg(XenPTRegGroup *reg_grp, uint32_t address)
- return NULL;
- }
-
-+static uint32_t get_throughable_mask(const XenPCIPassthroughState *s,
-+ const XenPTRegInfo *reg,
-+ uint32_t valid_mask)
-+{
-+ uint32_t throughable_mask = ~(reg->emu_mask | reg->ro_mask);
-+
-+ return throughable_mask & valid_mask;
-+}
-
- /****************
- * general register functions
-@@ -157,14 +165,13 @@ static int xen_pt_byte_reg_write(XenPCIPassthroughState *s, XenPTReg *cfg_entry,
- {
- XenPTRegInfo *reg = cfg_entry->reg;
- uint8_t writable_mask = 0;
-- uint8_t throughable_mask = 0;
-+ uint8_t throughable_mask = get_throughable_mask(s, reg, valid_mask);
-
- /* modify emulate register */
- writable_mask = reg->emu_mask & ~reg->ro_mask & valid_mask;
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
-
- /* create value for writing to I/O device register */
-- throughable_mask = ~reg->emu_mask & valid_mask;
- *val = XEN_PT_MERGE_VALUE(*val, dev_value, throughable_mask);
-
- return 0;
-@@ -175,14 +182,13 @@ static int xen_pt_word_reg_write(XenPCIPassthroughState *s, XenPTReg *cfg_entry,
- {
- XenPTRegInfo *reg = cfg_entry->reg;
- uint16_t writable_mask = 0;
-- uint16_t throughable_mask = 0;
-+ uint16_t throughable_mask = get_throughable_mask(s, reg, valid_mask);
-
- /* modify emulate register */
- writable_mask = reg->emu_mask & ~reg->ro_mask & valid_mask;
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
-
- /* create value for writing to I/O device register */
-- throughable_mask = ~reg->emu_mask & valid_mask;
- *val = XEN_PT_MERGE_VALUE(*val, dev_value, throughable_mask);
-
- return 0;
-@@ -193,14 +199,13 @@ static int xen_pt_long_reg_write(XenPCIPassthroughState *s, XenPTReg *cfg_entry,
- {
- XenPTRegInfo *reg = cfg_entry->reg;
- uint32_t writable_mask = 0;
-- uint32_t throughable_mask = 0;
-+ uint32_t throughable_mask = get_throughable_mask(s, reg, valid_mask);
-
- /* modify emulate register */
- writable_mask = reg->emu_mask & ~reg->ro_mask & valid_mask;
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
-
- /* create value for writing to I/O device register */
-- throughable_mask = ~reg->emu_mask & valid_mask;
- *val = XEN_PT_MERGE_VALUE(*val, dev_value, throughable_mask);
-
- return 0;
-@@ -292,15 +297,13 @@ static int xen_pt_cmd_reg_write(XenPCIPassthroughState *s, XenPTReg *cfg_entry,
- {
- XenPTRegInfo *reg = cfg_entry->reg;
- uint16_t writable_mask = 0;
-- uint16_t throughable_mask = 0;
-+ uint16_t throughable_mask = get_throughable_mask(s, reg, valid_mask);
-
- /* modify emulate register */
- writable_mask = ~reg->ro_mask & valid_mask;
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
-
- /* create value for writing to I/O device register */
-- throughable_mask = ~reg->emu_mask & valid_mask;
--
- if (*val & PCI_COMMAND_INTX_DISABLE) {
- throughable_mask |= PCI_COMMAND_INTX_DISABLE;
- } else {
-@@ -454,7 +457,6 @@ static int xen_pt_bar_reg_write(XenPCIPassthroughState *s, XenPTReg *cfg_entry,
- PCIDevice *d = &s->dev;
- const PCIIORegion *r;
- uint32_t writable_mask = 0;
-- uint32_t throughable_mask = 0;
- uint32_t bar_emu_mask = 0;
- uint32_t bar_ro_mask = 0;
- uint32_t r_size = 0;
-@@ -511,8 +513,7 @@ static int xen_pt_bar_reg_write(XenPCIPassthroughState *s, XenPTReg *cfg_entry,
- }
-
- /* create value for writing to I/O device register */
-- throughable_mask = ~bar_emu_mask & valid_mask;
-- *val = XEN_PT_MERGE_VALUE(*val, dev_value, throughable_mask);
-+ *val = XEN_PT_MERGE_VALUE(*val, dev_value, 0);
-
- return 0;
- }
-@@ -526,9 +527,8 @@ static int xen_pt_exp_rom_bar_reg_write(XenPCIPassthroughState *s,
- XenPTRegion *base = NULL;
- PCIDevice *d = (PCIDevice *)&s->dev;
- uint32_t writable_mask = 0;
-- uint32_t throughable_mask = 0;
-+ uint32_t throughable_mask = get_throughable_mask(s, reg, valid_mask);
- pcibus_t r_size = 0;
-- uint32_t bar_emu_mask = 0;
- uint32_t bar_ro_mask = 0;
-
- r_size = d->io_regions[PCI_ROM_SLOT].size;
-@@ -537,7 +537,6 @@ static int xen_pt_exp_rom_bar_reg_write(XenPCIPassthroughState *s,
- r_size = xen_pt_get_emul_size(base->bar_flag, r_size);
-
- /* set emulate mask and read-only mask */
-- bar_emu_mask = reg->emu_mask;
- bar_ro_mask = (reg->ro_mask | (r_size - 1)) & ~PCI_ROM_ADDRESS_ENABLE;
-
- /* modify emulate register */
-@@ -545,7 +544,6 @@ static int xen_pt_exp_rom_bar_reg_write(XenPCIPassthroughState *s,
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
-
- /* create value for writing to I/O device register */
-- throughable_mask = ~bar_emu_mask & valid_mask;
- *val = XEN_PT_MERGE_VALUE(*val, dev_value, throughable_mask);
-
- return 0;
-@@ -940,14 +938,13 @@ static int xen_pt_pmcsr_reg_write(XenPCIPassthroughState *s,
- {
- XenPTRegInfo *reg = cfg_entry->reg;
- uint16_t writable_mask = 0;
-- uint16_t throughable_mask = 0;
-+ uint16_t throughable_mask = get_throughable_mask(s, reg, valid_mask);
-
- /* modify emulate register */
- writable_mask = reg->emu_mask & ~reg->ro_mask & valid_mask;
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
-
- /* create value for writing to I/O device register */
-- throughable_mask = ~reg->emu_mask & valid_mask;
- *val = XEN_PT_MERGE_VALUE(*val, dev_value & ~PCI_PM_CTRL_PME_STATUS,
- throughable_mask);
-
-@@ -1036,7 +1033,7 @@ static int xen_pt_msgctrl_reg_write(XenPCIPassthroughState *s,
- XenPTRegInfo *reg = cfg_entry->reg;
- XenPTMSI *msi = s->msi;
- uint16_t writable_mask = 0;
-- uint16_t throughable_mask = 0;
-+ uint16_t throughable_mask = get_throughable_mask(s, reg, valid_mask);
-
- /* Currently no support for multi-vector */
- if (*val & PCI_MSI_FLAGS_QSIZE) {
-@@ -1049,7 +1046,6 @@ static int xen_pt_msgctrl_reg_write(XenPCIPassthroughState *s,
- msi->flags |= cfg_entry->data & ~PCI_MSI_FLAGS_ENABLE;
-
- /* create value for writing to I/O device register */
-- throughable_mask = ~reg->emu_mask & valid_mask;
- *val = XEN_PT_MERGE_VALUE(*val, dev_value, throughable_mask);
-
- /* update MSI */
-@@ -1161,7 +1157,6 @@ static int xen_pt_msgaddr32_reg_write(XenPCIPassthroughState *s,
- {
- XenPTRegInfo *reg = cfg_entry->reg;
- uint32_t writable_mask = 0;
-- uint32_t throughable_mask = 0;
- uint32_t old_addr = cfg_entry->data;
-
- /* modify emulate register */
-@@ -1170,8 +1165,7 @@ static int xen_pt_msgaddr32_reg_write(XenPCIPassthroughState *s,
- s->msi->addr_lo = cfg_entry->data;
-
- /* create value for writing to I/O device register */
-- throughable_mask = ~reg->emu_mask & valid_mask;
-- *val = XEN_PT_MERGE_VALUE(*val, dev_value, throughable_mask);
-+ *val = XEN_PT_MERGE_VALUE(*val, dev_value, 0);
-
- /* update MSI */
- if (cfg_entry->data != old_addr) {
-@@ -1189,7 +1183,6 @@ static int xen_pt_msgaddr64_reg_write(XenPCIPassthroughState *s,
- {
- XenPTRegInfo *reg = cfg_entry->reg;
- uint32_t writable_mask = 0;
-- uint32_t throughable_mask = 0;
- uint32_t old_addr = cfg_entry->data;
-
- /* check whether the type is 64 bit or not */
-@@ -1206,8 +1199,7 @@ static int xen_pt_msgaddr64_reg_write(XenPCIPassthroughState *s,
- s->msi->addr_hi = cfg_entry->data;
-
- /* create value for writing to I/O device register */
-- throughable_mask = ~reg->emu_mask & valid_mask;
-- *val = XEN_PT_MERGE_VALUE(*val, dev_value, throughable_mask);
-+ *val = XEN_PT_MERGE_VALUE(*val, dev_value, 0);
-
- /* update MSI */
- if (cfg_entry->data != old_addr) {
-@@ -1229,7 +1221,6 @@ static int xen_pt_msgdata_reg_write(XenPCIPassthroughState *s,
- XenPTRegInfo *reg = cfg_entry->reg;
- XenPTMSI *msi = s->msi;
- uint16_t writable_mask = 0;
-- uint16_t throughable_mask = 0;
- uint16_t old_data = cfg_entry->data;
- uint32_t offset = reg->offset;
-
-@@ -1247,8 +1238,7 @@ static int xen_pt_msgdata_reg_write(XenPCIPassthroughState *s,
- msi->data = cfg_entry->data;
-
- /* create value for writing to I/O device register */
-- throughable_mask = ~reg->emu_mask & valid_mask;
-- *val = XEN_PT_MERGE_VALUE(*val, dev_value, throughable_mask);
-+ *val = XEN_PT_MERGE_VALUE(*val, dev_value, 0);
-
- /* update MSI */
- if (cfg_entry->data != old_data) {
-@@ -1410,7 +1400,7 @@ static int xen_pt_msixctrl_reg_write(XenPCIPassthroughState *s,
- {
- XenPTRegInfo *reg = cfg_entry->reg;
- uint16_t writable_mask = 0;
-- uint16_t throughable_mask = 0;
-+ uint16_t throughable_mask = get_throughable_mask(s, reg, valid_mask);
- int debug_msix_enabled_old;
-
- /* modify emulate register */
-@@ -1418,7 +1408,6 @@ static int xen_pt_msixctrl_reg_write(XenPCIPassthroughState *s,
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
-
- /* create value for writing to I/O device register */
-- throughable_mask = ~reg->emu_mask & valid_mask;
- *val = XEN_PT_MERGE_VALUE(*val, dev_value, throughable_mask);
-
- /* update MSI-X */
---
-2.1.4
-
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-04 01:12:00 +0000